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Transcript of PRINCIPLES OF
Whether handling food for your family, or cooking for
hundreds… food safety and sanitation
must be your concern.
A foodborne illness is a disease carried or transmitted to people by food. This is
commonly, but not necessarily accurately, referred to as food
poisoning. (In actuality that term should be reserved specifically for illnesses caused by toxins or
chemicals contaminating the food.)
The Centers for Disease Control and Prevention (CDC) “defines” a foodborne-illness outbreak as an incident in which two or more people experience the same
illness after eating the same food.
It is important to note that a foodborne illness is not “confirmed” until and unless laboratory analysis shows
that a specific food is the source of the illness.
Young children who may not have built an adequate immune system
People who are ill or those who have had surgery, transplants, or
chronic illnesses
Elderly people
because their immune systems may have weakened with age
Pregnant women
People taking
medication
At home, it is the person cooking that is in charge of food safety. In any food service operation, it is the
manager’s responsibility to train employees in food safety.
Food safety training must be ongoing.
Food safety training programs should target both new and current employees, meet the needs of all learners, include assessment tools that identify training needs, and be documented in records.
Although any food can become contaminated, most potentially hazardous foods are those in
which microorganisms are able to grow rapidly.
Potentially hazardous food has typical characteristics:
1. Has a history of being involved in foodborne illness outbreaks
2. Has a natural potential for contamination due to production and processing methods
3. Is moist
4. Contains protein
5. Has neutral or slightly acidic pH levels
Shell eggs
Meat
Baked potato
Fish & shellfish
Milk & milk products
Sprouts
TofuTexturized vegetable
(soy) protein
Cooked rice or beans
Garlic & Oil mixtures
Sliced melons
Pathogenic bacteria grow best in food that is just slightly acidic or neutral (approximate pH of 4.6 to 7.5), which includes most foods we eat.
The 4 types of microorganisms that can contaminate food and cause foodborne illnesses are
fungi, parasites, viruses, and bacteria.
A “pathogen” is a disease-causing microorganism. Foodborne
microorganisms typically do NOT grow in alkaline or highly acidic
foods, such as crackers or lemons.
The acronym FAT TOM can be used to remember the 6 favorable conditions for
growing foodborne microorganisms:
F= FoodA= Acidity
T= Temperature 41-135 °F 5-57 °C
is ideal for growth
T= Time O= Oxygen M= Moisture
Shigellosis (bacillary dysentery) (shig′ĕ-lō′sis)
is a foodborne illness caused by the shigella bacteria. Potato, tuna, shrimp, chicken, and macaroni salads are
often the foods involved in outbreaks, as well as raw vegetables and dairy products.
Symptoms: diarrhea and bloody diarrhea, abdominal pain, fever, nausea, vomiting, chills, fatigue, and dehydration… good
personal hygiene of the food handler is the best defense
Salmonellosis (sal′mō-nel-ō′sis) is a bacterial foodborne illness caused by the salmonella bacteria. It is most commonly associated with shell
eggs and undercooked foods containing eggs such as custards, sauces, and pastry creams. It is also found in most protein foods, as
well as dairy, sliced melons and tomatoes, and raw sprouts.
Symptoms: nausea, vomiting, abdominal
cramps, headache, fever
The best preventative measures are to cook
eggs until yolks are firm and cook poultry
thoroughly.
Listeriosis (lis-tēr′ē-ō′sis) is a type of bacterial foodborne illness caused by the listeria monocytogenes bacteria. It is often found in unpasteurized milk and milk products,
raw vegetables, poultry, meat and seafood, prepared and chilled ready-to-eat foods such as those found in a deli.
Symptoms: fever, diarrhea
There are several forms of the bacterial foodborne illness called gastroenteritis (gas′trō-en-tĕr-ī′tis), but as the prefix “gastro” suggests, all involve the inflammation of the mucous membrane of the stomach
and intestines. Severe cases of staphylococcal gastroenteritis can even result in changes to blood pressure and pulse rate.
Bacterium causing gastroenteritis are found in protein foods such as meat, poultry, fish, and egg-
clostridium perfringens (klŏ-strĭd'ē-əm pər-frĭn'jənz)
gastroenteritis; starchy foods such as rice, pasta, and potatoes- bacillus cereus (bə′sil·əs ′sir·ē·əs) gastroenteritis; and from foods
that have been improperly cooled or hot-held for periods of time- staphylococcal (stăf'ə-lō-kŏk'əl)
gastroenteritis).
Practice good personal hygiene. Use careful time and temperature control when
holding, cooling, and reheating food.
Botulism (bot′yū-lizm)is a foodborne illness caused
by the spore-forming anaerobic bacteria (an·ə¦rōb·ik ′bak′tir·ē·ə) called clostridium botulinum (klŏ-strĭd'ē-əm bŏch'ə-lī'nəm)
Because this bacteria is
anaerobic (does not need air to live) it
can survive in improperly canned foods. Do not eat foods from deeply dented or bulging
cans. Use care when home-canning
or eating home-canned foods. It is also linked to garlic and oil mixtures and
sautéed onions in butter.
Symptoms: fatigue, weakness, vertigo (dizziness or blurred vision) dry mouth, eventually can lead to paralysis and death
Campylobacteriosis (kam′pi-lō-bak′ter-ē-ō′sis) is caused by the campylobacter jejuni (jə-jū'nī‘)
bacteria. It is now the leading cause of bacterial foodborne illness.
The most common source of this
bacteria is raw or undercooked
chicken. Avoid cross
contamination by disinfecting hands,
knives, work surfaces, etc. after
handling raw chicken. It is also associated with
unpasteurized dairy products.
Symptoms: diarrhea, including watery or bloody diarrhea; abdominal cramps, headache, muscle pain
Hemorrhagic colitis (′hem·ə¦raj·ik kə′līd·əs) is the foodborne illness caused by the toxin-producing
bacterias called escherichia coli 0157:H7 or 0157:NM (′esh·ə′rik·ē·ə kō'lī). This is commonly called E. coli.
The most common source of E. coli is
raw or undercooked meat, primarily
ground beef. Apple juice, unpasteurized
milk, lettuce, sprouts, spinach, and non-
chlorinated water are also often involved in
outbreaks.Symptoms: watery or bloody diarrhea, fever, nausea, abdominal/muscle pain, headache
Vibrio parahaemolyticus gastroenteritis (vĭb'rē-ō‘ păr'ə-hē'mə-lĭt'ĭ-kəs gas′trō-en-tĕr-ī′tis )
Vibrio vulnificus primary septicemia (vĭb'rē-ō‘ vŭl-nĭf'ĭ-kəs sĕp'tĭ-sē'mē-ə)
Both foodborne illnesses caused by the comma-shaped vibrio bacteria are
linked to a common source: shellfish -
crabs, clams, oysters, shrimp,
lobster, and scallopsSymptoms: diarrhea, cramps, vomiting, and chills, fever, and skin lesions may develop with septicemia
Yersiniosis (yər-sĭn'ē-ō'sĭs) is the foodborne illness caused by the bacteria yersinia enterocolitica (en-tĕr-ō-kō-lĭt'ĭ-kə). It is an intestinal infection.
Contaminated raw and undercooked
pork products (especially the pork
intestines called chitterlings), as well
as contaminated, pasteurized milk
have been associated with
outbreaks of yersiniosis.
Symptoms develop 4-7 days after exposure and may
mimic appendicitis.
Crispy-fried chitterlings
Viruses are the smallest of the microbial contaminants and can only reproduce once inside a living human cell, not in the food. Some may survive freezing and cooking. They can be transmitted from person to
person, from people to food, and from people to food-contact surfaces, so good personal hygiene of the food handler is the best
defense.
Norovirus (including the Norwalk virus)
and rotavirus (most common in children)
can cause nausea and vomiting, but are best
known for causing watery diarrhea.
Hepatitis A is another viral foodborne illness characterized by the sudden onset of fever, fatigue, nausea, loss of appetite, vomiting,
abdominal pain, and even jaundice. The human intestinal tract is a source of viruses; wash hands
often, especially after using the bathroom.
Shellfish is commonly involved in outbreaks of Hepatitis A.
Trichinosis (trĭk'ə-nō'sĭs) is caused by the trichinae round worm that
infects the muscles. The source is raw or undercooked pork.
Cryptosporidiosis (krĭp'tō-spə-rĭd'ē-ō'sĭs), giardiasis (jē'är-dī'ə-sĭs,
and cyclosporiasis (si-clō-spə-'rī'-a-sĭs) are foodborne illnesses caused by
single-celled parasites that live in human or animal intestinal tracts. They are usually
transmitted through contaminated water or poor hygiene of the food handler. Symptoms include
intestinal cramps and diarrhea.
Toxoplasmosis (tŏk'sō-plăz-mō'sĭs), also caused by a single-celled parasite, is
associated with cat feces and contaminated water, and may cause enlarged lymph nodes
and affect unborn fetuses.
All parasites need a host to survive. Good
hygiene of the food handler and a sanitary
water source helps prevent these illnesses.
Single-cell microorganisms
Anisakiasis (an′i-să-kī′ă-sis) is another foodborne illness caused by a type (anisakis simplex) of roundworm
parasite. It is found in raw, undercooked, or improperly frozen seafood.
When eating raw or undercooked seafood,
such as in sushi (sū'shē contains a vinegared rice) or sashimi (sä-shē'mē which are
raw fish strips for dipping), obtain seafood
from reliable sources and that which has been
properly treated to eliminate parasites.
Symptoms: tingling sensation in the throat; severe abdominal pain, vomiting,
and diarrhea
Fungi (fŭn′jī) range in size and are found naturally in air, soil, water, and some food. Mold, yeast, and mushrooms are
examples of fungi.
Mold grows well in acidic food with low water
activity; freezing only slows its growth without
destroying it; heating kills its cells and spores but not the toxins produced
by them. Molds may cause allergic reactions in some
people. Yeasts produce a smell or taste of alcohol, as carbon
dioxide and alcohol are formed as the yeast
consumes the food. They are known for spoiling
food rapidly.
The FDA recommends discarding all food with mold that is not a natural part of the
food, such as blue cheese.
Foodborne diseases are classified as either infections or intoxications. A foodborne intoxication results when a person eats food containing toxins that cause illness.
Symptoms of a food-borne intoxication appear within a few hours. A foodborne infection is less common, and
symptoms do not appear immediately.
A foodborne infection results when a person eats food containing pathogens, which then grow in the intestines and cause the illness.
The three types of foodborne contamination are:
1. Biological contaminants- microbial contaminants that
include bacteria, viruses, parasites, fungi, and
biological toxins
2. Chemical contaminants- toxic
metals, pesticides, cleaning products,
sanitizers, and lubricants
3. Physical contaminants- foreign objects that are accidentally
introduced into food
hair
Biological toxins cannot be smelled or tasted and most of the time are not destroyed by cooking or freezing. Your best defense
against them is to purchase food only from reputable suppliers and make sure fish are kept at 41°F or lower.
Plant toxins such as those in fava beans (killed by cooking),
rhubarb leaves, jimsonweed or milk from cows that have eaten
jimsonweed, water hemlock, etc. are a natural part of the plant.
The majority of foodborne illness outbreaks associated with fungi are caused by the
consumption of wild mushrooms, collected by amateur mushroom hunters. Not all
species of mushrooms are edible.
jimsonweed
rhubarb
Ciguatera (sē'gwə-tĕr'ə) Toxin- found in predatory tropical
reef fish such as amberjack, barracuda, grouper, and snapper; the
person becomes ill when they eat a fish that has eaten the toxic algae
“ciguatera”
Scombroid (skŏm'broid‘)Toxin (histamine)- found in scombroid fish
such as tuna, mackerel, bluefish, skipjack, bonito, mahi-mahi, marlin, and sardines; the toxin develops in the fish when it is
time-temperature abused anytime between the moment it is caught to the time it is
served; time-temperature abuse may mean storage at an improper temperature or
freezing, thawing, and refreezing (indicated by
excessive frost and ice in the package)
Shellfish Toxin - found in
shellfish that have eaten poisonous algae,
especially mollusks such as mussels,
clams, cockles, and scallops
Systemic Fish Toxins - found as a natural part of
some fish, such as the pufferfish, moray eels, and
freshwater minnows
Snapper
Mahi-mahi
Cockles
Moray eel
Contamination can come from a variety of substances normally
found in homes, restaurants, and foodservice establishments.
If highly acidic food such as sauerkraut, tomatoes, and citrus products are stored in or prepared
with utensils or equipment that contain toxic metals, such as
lead, copper, brass, zinc, pewter, galvanized metal, antimony, and cadmium, it can leach these metals
from the item into the food. This may result in toxic metal poisoning.
Only food-grade utensils and equipment should be
used to store and prepare food.
All cleaning chemicals, sanitizers, lubricants, and pesticides must be stored
away from food, utensils, and equipment used for food.
Store chemicals in original containers.
Physical contamination results when foreign objects are accidentally or
deliberately introduced into food, or when naturally occurring objects, such as
bones in fish, pose a physical hazard.
Fingernails, bandages, insects, metal shavings from cans, adhesive stickers on
fruits or vegetables, pieces of rubber scrapers, broken glass, hair, and dirt are
common physical contaminants.
A food allergy is the body’s negative reaction to a particular food protein. Depending on the person,
allergic reactions may occur immediately after the food is eaten or several hours later.
Symptoms of allergies include:
Tightening in the throat Wheezing or shortness of breath Swelling of the face, eyes, hands, feet Hives Itching in and around the mouth, face, or scalp Loss of consciousness Gastrointestinal distress (cramps, diarrhea, vomiting) Death
Swelling
Hives
Shortness of breath
B. Milk & milk products
C. Eggs & egg products
A. Fish/shellfish
D. Soy & soy products including
tofu
E. Wheat & wheat products
F. Nuts, especially peanuts and peanut
products
Restaurant employees should be aware of the most common food allergens and be able to answer customer questions and identify
ingredients in menu items.
Sauces and garnishes are often the source of allergens; serve them on the side.
If a customer inquires about food allergens in a menu item and there
is any unknown or “secret” ingredient… customers should be
urged to order something else.
Follow acceptable practices for handling food at home or in an establishment. Do not handle food if you have a foodborne illness, show symptoms of a gastrointestinal illness, have infected lesions on your hands, are a carrier of foodborne pathogens (carriers infect others with pathogens but do not become ill themselves).
Maintain personal cleanliness through
proper bathing and hair washing. Do not
scratch the scalp, run fingers through your
hair, wipe or touch the nose, rub an ear, touch a pimple or open sore,
wear dirty clothes, cough or sneeze into
the hand, or spit around food.
Wear proper attire if preparing food at a food establishment,
such as clean hat or hair restraint, clean clothing,
non-slip and closed-toe shoes,
and remove jewelry (rings, earrings,
watch, etc). Follow hygienic
hand practices such as handwashing,
hand maintenance, and proper glove
use.
Food handlers can help prevent food contamination by proper hand-washing techniques:
1. Wet hands with hot, running water, at least 100°F
2. Apply soap
3. Vigorously scrub hands and arms for at least 20 seconds.
4. Clean under fingernails and between fingers. Rinse thoroughly under running water.
5. Dry hands and arms with a single use paper towel or warm-air hand dryer.
6. Avoid re-contamination of clean hands.
Food handlers must wash their hands before they start handling food and after each of the following activities:
Using the restroom Touching the hair, face, or body Using a handkerchief or tissue Coughing or sneezing into the hand Smoking, eating, drinking, chewing gum or tobacco Handling chemicals that might affect the safety of food Taking out garbage or trash Clearing tables of dirty dishes Touching dirty clothing or aprons Touching unsanitized equipment, work surfaces, etc.
Hand sanitizers should never be used
in place of proper handwashing. If used
in foodservice establishments, they
must be FDA approved. After using the sanitizer, hands should be dry before touching equipment.
In food service operations that allow bare-hand contact with
food, they must have a verifiable written policy on handwashing
procedures.
If working in food service, keep fingernails short and clean. Do
not wear false fingernails. Do not wear nail polish.
Bandage a finger cut or sore; then
cover the bandage with a glove or
finger cot to protect the
bandage and keep it from falling off
into the food.
Gloves can create a barrier between hands and food, but
should never be used in place of handwashing. Hands must be
washed before putting on gloves and when changing to a fresh pair. Gloves that are too large will not stay on the hand; those that are too small will tear or rip easily.
Gloves should be changed at least every 4 hours during continual use; more often
when necessary. They should be changed immediately after handling raw meat, fish,
or poultry. Remove gloves by grasping them at the cuff and peeling them off
inside out. Discard.
Gloves specifically formulated for food contact bear the NSF certification.
Some diseases CANNOT be transmitted through food, including
AIDS, Hepatitis B and C, and tuberculosis.
If the food handler has a fever, diarrhea, is
vomiting, has a sore throat with a fever, or has jaundice… they
should not work with or around food.
If the food handler in a food service operation contracts salmonella, shigellosis, E.coli, or
hepatitis A… they should be excluded from
the premises and management should
report their illness to the health department.
The food service manager plays an important role in
the effectiveness of a personal hygiene
program… modeling and enforcing standards.
Art McWilliams, UNL Food Service Mgr.
The flow of food begins with purchasing and receiving, and continues through storing,
preparing, cooking, holding, cooling, reheating, and serving. Food safety depends on one’s
understanding of safety concepts throughout the flow of food and on the development of a system that prioritizes, monitors, and verifies the most
important food safety practices.
Purchasing
Receiving
Storing
Preparing
Cooking
Holding
Cooling
ReheatingServing
A major hazard to the flow of food is cross-contamination. The transfer of
microorganisms from one food or surface to another is called cross-
contamination. Prevention starts with the creation of barriers, physical or
procedural, between food products.
Physical barriers: 1. Assign specific equipment to each type of food product (such as color-coding cutting boards and knives) 2. Clean and sanitize all work surfaces, equipment, and utensils after each task. Washing and rinsing may not be enough!
Procedural barriers: 1. When using the same preparation table, prepare salads and dessert foods at different times than preparing entrées. 2. Purchase ingredients that require minimal preparation, such as pre-shredded lettuce.
Time-temperature control is another safety factor to consider in the flow of food. Whenever food is being held in the temperature
danger zone, it is being abused.
Disease-causing microorganisms grow and multiply at temperatures
between 41°F to 135°F (5°C to 57°C) , which is why this range is known as the temperature danger zone.Bacteria grow very rapidly in the
middle of the zone… 70°F to 125°F (21°C to 52°C).
The longer a food stays in the temperature danger zone, the more time microorganisms have to multiply and make food unsafe.
Cook food to its required minimum internal temperature.
Cool food properly.
Reheat food to 165°F (74°C ) for fifteen seconds within two
hours.
Do not leave any food in the temperature
danger zone for more than four hours.
Hold food at a minimum internal
temperature of 135°F or higher OR
41°F or lower.
A food service establishment must decide the best way to monitor time and temperature, make sure they have the right kind of thermometers in
the right place, regularly record temperatures and the times they are taken, incorporate time and temperature controls into standard operating procedures for employees, and develop a set of corrective actions when
time and temperature standards are not met.
?
The bi-metallic stemmed thermometer measures the temperature through a metal probe with a
sensor in the end. To calibrate this thermometer (make sure its accurate) at “ice point” : fill a
large container with crushed ice and water; stir; put the thermometer stem into the ice water so the sensing area is completely submerged, not
allowing the stem or probe to touch the container’s bottom or sides; hold the calibration nut securely with a wrench and rotate the head
of the thermometer until it reads 32°F.
Calibrate bimetallic thermometers often (using ice point at 32°F or boiling point at 212°F methods),
once before each shift in a food service
establishment.
Never use glass thermometers
filled with mercury or spirits to
monitor the temperature of
food.
Infrared (laser) thermometers produce very accurate temperature readings of food and equipment
surfaces. They are non-contact thermometers, so can reduce the risk of cross-contamination. Hold
them close to the surface of a food.
Measure internal temperatures of food by inserting the
thermometer probe into the thickest part of the food.
Thermocouple and thermistor thermometers have a metal probe
or sensing area and display results on a digital readout. These
have 4 types of probes: immersion probes for liquids;
surface probes for flat cooking; penetration probes for internal
temperatures; air probes for the inside of refrigerators or ovens.
A time-temperature indicator (TTI) is designed to monitor both time and product temperature.
Products can be tagged with a special label, and those labels record a history of the product’s
time and temperature during shipment.
The most important factor in choosing a food supplier is to assure food safety. Do this by
purchasing food from an approved food source. This would be a supplier that has been inspected and is in compliance with applicable
local, state, and federal law.
Inspect foods carefully, checking for proper
labeling, temperature, appearance, and other
factors important to safety.
Check food products for intact packaging, signs of refreezing, prior wetness, and pest infestation.
Once foodstuffs have been purchased and received, store them properly and quickly.
Meat must be inspected by the USDA or the state department of agriculture, meaning that the product and processing plant have met
certain standards of acceptability.
Meat may be graded, indicating its palatability and level of quality. This is a service some
processors and packers pay the USDA for, but it is voluntary.
Meat must be held at 41°F or lower.
The texture should be firm and spring
back when touched. It should
not be slimy, sticky, or dry. It
should not have an odor. Packaging should be intact
and clean.
Beef should be bright cherry red; aged beef may be darker; vacuum packed beef may appear purplish.
Pork should be light pink with firm white fat.
Lamb should be light red with no whitish surface
covering the lean meat.
Poultry is USDA inspected in a similar fashion to meat. It is voluntarily graded A, B, or C,
indicating appearance and overall quality.
Fresh poultry, such as chicken and turkey, should be shipped frozen or in self-draining crushed ice or chill packed. There should be no purple or green discoloration. Wing tips can be red, but not dark. The flesh should be firm and springs back when touched. It
should not be sticky, even around wings or around joints. There should be no
unpleasant odor.
Fresh fish is very sensitive to time-temperature abuse and can deteriorate quickly if handled improperly. It should always be stored at 41°F or lower. The fish should have bright red gills, with firmly attached scales, and bright (not
cloudy) shiny skin. The flesh should be firm, and spring back when touched. It
will have a mild ocean or seaweed smell, but not smell like strong fish or ammonia.
The eyes of the fish should be bright,
clear, and full… not sunken, cloudy, or
red-rimmed. The fish should be
surrounded by crushed, self-draining ice.
Shellfish include mollusks such as
clams, oysters, and mussels. They can be shipped live, frozen, in the shell, or shucked.
Live shellfish must be received with a shellstock identification tag on which the delivery date is written. Batches of shellfish cannot be mixed. The ID
tags must remain on the delivery container until the last shellfish is used, and then kept on file for an
additional 90 days. Shellfish should be kept at a
temperature of 45°F or lower; have a mild ocean or seaweed smell, and
have closed (especially when tapped) and unbroken shells. mussels
oysters clams
Crustacea include shrimp, crab, and lobster. Live crustacea must be received alive, shipped
in water or moist seaweed; processed crustacea must be kept at 41°F or lower. The tail of a live lobsters should curl, especially
when picked up…the more curl the better. The odor should be one of mild ocean or seaweed, not a strong fishy smell. The shells should be
hard and heavy, not soft.
shrimp
lobstercrabs
Pasteurized shell eggs are heated for a period of time to destroy any bacteria that might be present, but the process
does not cook the eggs. They are more expensive than unpasteurized eggs, but are a good alternative for use in raw
or partially cooked egg recipes. The eggs can be used in egg dishes and for baked items just like eggs that are not
pasteurized. The shells are stamped to signify that the eggs have been pasteurized.
Shell eggs are inspected and voluntarily graded by the
USDA, like meat and poultry.
Shell eggs should be stored at a temperature of 45°F or lower. They should have no odor (especially a sulfur smell); shells should be clean
and unbroken. Liquid, frozen, and dehydrated eggs must be pasteurized.
Purchase only pasteurized dairy products. All milk and milk products such as cream, cheese, cottage cheese, butter, and ice cream should be labeled Grade A, meaning they meet standards for quality and sanitary processing methods set by the FDA.
Dairy products should be
maintained at a temperature of 41°F or lower.
Milk should look uniform in color and
have a sweetish flavor.
Cheese should have a typical flavor and texture, and a typical color with no unnatural mold.
Butter should have a sweet flavor, uniform
color, and firm texture.
Fruits and vegetables have different temperature requirements for transportation and storage. No specific temperature is
mandated except for cut melons which must be received and stored at 41°F or lower.
Fresh fruits and vegetables should show no signs of spoilage, insect
infestation, mold, cuts, mushiness,
discoloration, wilting, dull appearance, or unpleasant odors or
taste.
Refrigerated or frozen processed foods include pre-cut meats, refrigerated or frozen entrées that only require reheating, and
freshly cut fruits and vegetables.
Refrigerated foods must be kept at 41°F or lower. Frozen food must be kept at 10°F or lower. Packaging should be intact and in good condition.
Reject frozen foods with large ice crystals on the product, frozen liquids
in the cases, or water stains on packaging as these are all signs of
thawing and refreezing.
MAP stands for Modified Atmosphere Packaging, a packaging process by
which air is removed from a food package and replaced with gases, such as carbon dioxide and nitrogen. These
gases extend a product’s shelf life.
Sous vide (sū vēd') food is processed by vacuum-packing in
individual pouches, often partially or fully cooked, and
then chilled or frozen. The food is then reheated before serving.
Sous vide vacuum packed foods should be refrigerated at 41°F or lower or be frozen. The packaging must be intact with valid code dates (expiration
dates). The product should be an acceptable color; not slimy or bubbling.
The can and seal should be in good condition. The
product should be a normal color, texture, and color. Reject products that are
foamy or milky.
Never taste canned food you are unsure of. Avoid deeply dented cans
Avoid rusty cans
Ultra-high temperature (UHT) food is heat-treated at very high temperatures (pasteurized) for a short time to kill microorganisms.
These foods are often also aseptically packaged… sealed under sterile conditions to keep them from being contaminated.
Once food has been UHT packaged, it can be received and stored at room temperature. Once opened, it should be refrigerated.
Dry food must be kept dry. It does attract pests. It does have a longer shelf life.
Reject packages with holes, tears, or
punctures; dampness or water stains; abnormal
color or odor; spots of mold; slimy
appearance; or that contains insects, insect eggs, or
rodent droppings.
Bakery goods need to be
stored at the temperature
recommended by the
manufacturer, or at room
temperature if not noted. Packaging
should be intact. There should be
no signs of mold or pest
damage.
Suppliers of hot foods should have a HACCP plan… a means of documenting
proper cooking methods and temperatures.
Potentially hazardous hot food
should be maintained at 135°F
or higher during delivery or holding.
All potentially hazardous ready-to-eat food prepared on site and held longer than 24 hours should be
labeled with the date it was prepared OR the date it should be sold, consumed, or discarded. It can be stored at 41°F or lower for a maximum of 7 days.
Many good storage guidelines can be applied to either a food service establishment or home-cooking.
Rotate products on the shelf to ensure
that the oldest inventory is used
first... first in, first out (FIFO). Discard food that has passed its
manufacturer’s expiration date.
Do not store food products near chemicals or cleaning supplies, in restrooms, locker rooms, janitor closets, furnace rooms, vestibules,
or under stairways or pipes of any kind.
Refrigerator air temperature should be at least 2°F lower
than the desired food temperature.
Freezer temperature should be 0°F or
lower.
Do not overload a refrigerator or freezer, as too many products
restricts air flow and makes
the unit work harder.
Open shelving in a refrigerator or freezer is
best for cold air circulation.
Never place hot food into a refrigerator or freezer, as it can put other food into the
temperature danger zone.
Keep the refrigerator or freezer door
closed as much as possible.
Store foods in a refrigerator/freezer in this top-to-bottom order: A. cooked and ready-to-eat food B. whole fish C. whole cuts of beef and pork D. ground meats and fish E. whole and ground poultry
Cover food properly.
Keep food storerooms cool and dry… between 50°F-70°F. They should also be well ventilated.
Ventilation keeps temperature and humidity levels constant, humidity
at 50-60%.
In food storerooms, store dry food away from walls and at least six inches off the floor.
Keep dry food out of direct sunlight.
Do not wash produce before storing.
In a food service establishment, molluscan shellfish such as clams, oysters, mussels, and scallops can be stored alive at an air temperature of 45°F, if you have a variance from
the local health department.
The following foods must be stored at 41°F or lower: A. meat B. poultry C. fish D. dairy products E. MAP packaged foods F. Sous vide packaged foods G. opened UHT products
The following foods must be stored at 45°F or lower: A. live shellfish in a tank B. shell eggs
The following foods must be stored at 50-70°F: A. canned and dry food
The following foods must be stored at 6-10°F:
A. Frozen foods
When frozen food is thawed and exposed to the temperature danger zone, any foodborne microorganisms present will begin to grow and multiply. There are only 4 acceptable ways for thawing potentially
hazardous food:
In a refrigerator at 41°F or
lower.
In a microwave oven, ONLY IF the food will be
cooked immediately
after thawing.
Submerged under running potable
water, at a temperature of 70 or lower; water
flow must be strong enough to wash
food particles into an overflow drain.
As a part of the cooking
process.
Potable means “fit to drink”.
Pooled eggs are eggs that are cracked open and combined in a common container. Bacteria from
one egg can spread to the rest. Clean and sanitize pooled egg containers after each batch.
Prepare food in small batches, so large amounts of
food don’t sit out for long periods of time.
Prepare batters or breading in small batches. Use the breading on only one product. Do not store used breading for long periods of time.
Prepare raw meat at different times and even on a different
work surface than fresh produce.
Store ice scoops outside the ice
machine.
Microorganisms are destroyed when food is cooked to minimum internal cooking temperatures. These temperatures vary according to the type of food: (unless specified otherwise, this temperature must
be held for a minimum of 15 seconds)
Poultry 165°F
Stuffing or stuffed meat or fish 165°F
Ground meats, fish, or injected meats 155°F
Pork, beef, veal, or lamb steaks or chops
145°F; roasts 145°F for 4 minutes
Fish 145°F
Shell eggs 145°F; shell
eggs hot-held for service
155°F
Fruits or vegetables or
ready-to-eat food hot held for
service 135°F
Check the temperature of the food in several places.
Potentially hazardous food cooked in a microwave should
reach an internal cooking temperature of 165°F.
While microwave cooking, cover the food to prevent the surface from drying out.
Rotate food on a turntable OR
stir food halfway
through the cooking time to distribute
the heat more thoroughly.
Let the microwaved food stand for 2
minutes after cooking to let the
product temperature
equalize.
The FDA (federal food and drug administration)
recommends two-stage cooling. Cooked food
must be cooled from 135°F down to 70°F within the first two hours. Then it
must be cooled from 70°F down to 41°F or lower
during the next four hours.
The key to using correct cooling methods is to understand that microorganisms grow best between 70°F and 125°F. Food must pass
through this temperature range quickly to minimize the growth of those microorganisms.
2. Use an ice-water bath. Put
the pot containing food down into
another pan filled with ice water.
1. Reduce the quantity or size of the food you are cooling, dividing it into smaller or more shallow
containers.
3. Blast chillers, unlike refrigerators, are
designed to chill food very quickly, i.e. from nearly boiling down to nearly freezing in less
than 2 hours.
4. Stir the food with a cold paddle, a plastic
paddle that can be filled with water and frozen.
ONCE FOOD HAS COOLED TO 70°F, IT CAN BE STORED ON THE TOP SHELF OF THE
REFRIGERATOR.
Suppose you have properly cooked a beef roast, and chilled it. Now, you want to reheat it to serve...
If you are reheating the food for immediate service, it can be reheated and served at any temperature.
IF, however, you are reheating the food for hot-holding (such as for a buffet), you have a two-hour time
period to get it all heated to a temperature of at least 165°F for a
period of at least 15 seconds.
Remember, the food can only be held at temperatures between 135°F down to 70°F for a two-hour period. After that, it must either be discarded or reheated up to 165°F for 15 seconds once again.
Check temperatures of hot-held food at least every 4 hours. Discard food that is not at least 135°F or higher OR 41°F or lower. If you check it every two hours, you can reheat it properly to save it.
Potentially hazardous, hot
food must be held at an internal
temperature of 135°F or higher.
A sneeze guard, a food shield over self-service displays, should extend 7
inches beyond the food and 14 inches above the counter.
Potentially hazardous, cold food must be held
at an internal temperature of 41°F or
lower.
If allowed by local regulations, a food can
be held without temperature control for
4 hours, but then it must be discarded. It should be labeled with the time it needs to be discarded.
Once the plate has been filled, avoid stacking the plate with others while
serving the customer. A good waiter or waitress may be able to carry several
plates without cross-contamination from one to the other… which also reduces
chipping and breakage.
Plates are stacked
Plates do not touch each other
Never re-serve uncovered condiments. Except for high risk diners, you can re-serve prepackaged foods such as
individually wrapped crackers, breadsticks, and condiments.
Do not re-serve uneaten bread or rolls; change bread basket linens for
each customer.
In food service establishments, there are rules about re-serving food.
Do not re-serve plate garnishes such as
parsley, fruit, or pickles.
Avoid bare hand contact with food that is cooked or is ready-to-eat.
Avoid contact with the food area of the plate.
Hold plates on the bottom, utensils and
cups by their handles, and glassware in the middle, bottom, or
stem.
Serving utensils should have long handles that extend above the rim of the serving dish. They should be cleaned and sanitized once every 4
hours during continuous use. Use a
different utensil for each food item.
Ice on a food bar cannot be reused elsewhere, such as in customer drinks.
Never refill a soiled plate; glassware can be reused if beverage-dispensing equipment doesn’t come in
contact with the rim of the glass.
Identify all foods on a buffet, including types of dressing printed on the ladle handles;
maintain proper food temperatures.
When catering, make sure adequate water and power are available. If leftovers are given
to the customer, provide instructions on how they
should be handled. Transport potentially
hazardous food in insulated containers.
Check product shelf life daily in
vending machines.
Fresh fruit with edible peels should be
washed and wrapped. Keep
potentially hazardous
foods at the right
temperatures. Machines must have automatic
shut off controls, if
temperatures fall into the
danger zone.
Active managerial control is a proactive approach for addressing the five most common risk factors responsible for foodborne illness, as identified by the Center for Disease Control (CDC). Those five factors are: 1. Purchasing food from unsafe sources
2. Failing to cook food adequately 3. Holding food at improper temperatures 4. Using contaminated equipment 5. Poor personal hygiene
A food safety management system is a group of programs and procedures designed to prevent foodborne illness by actively controlling
hazards throughout the flow of food. These programs include:
1. Personal hygiene standards and
policies
6. Manager and employee food safety training
2. Facility design3. Approved supplier
selection and specification
5. Cleaning and sanitation4. Equipment maintenance
A Hazard Analysis Critical Control Point (HACCP) System (pronounced hass-ip) is based on the idea that if significant biological, chemical, or physical hazards are identified at specific points within a
product’s flow through an operation, they can be prevented, eliminated, or reduced to safe levels. A HACCP is a written plan.
Although the National Restaurant Association and the FDA recommend that all restaurants have a HACCP in place, it is only required in establishments that perform the following activities: A. Smoke or cure food as a method of
preservation, B. Use food additives as a method of preservation, C. Package food using a reduced-oxygen packaging method, D. Offer live, molluscan
shellfish from a display tank, E. Custom-process animals for personal use, F. Package unpasteurized juice for sale to the customer without a warning label
1. Conduct a hazard analysis …what kind of processes do we do here and what are the most likely areas where contamination can occur?
2. Determine critical control points …at which points in each process can we prevent, eliminate, or reduce the hazards to safe levels?
3. Establish critical limits …what are the minimum and maximum levels we need to reach to prevent or eliminate the hazard?
4. Establish monitoring practices …who will monitor our critical limits and make sure they are consistently met?
5. Identify corrective actions …identify what steps must be taken when a critical limit is not met
6. Verify that the system works …evaluate your monitoring charts, records, and hazard analysis
7. Establish procedures for record keeping and documentation
Despite best efforts, a foodborne-illness outbreak can occur in any food service establishment at any time. A crisis management
program should identify the resources required and procedures that must be followed to handle crisis.
Develop simple instructions on what to do in each type of crisis. Assemble a contact list of names and numbers and post it by the
phones.
Assign and train a spokesperson to handle media relations.
A handwashing station needs the following components:
1. Hot and cold running water
2. Liquid, bar, or powdered soap (although some codes require liquid soap)
3. A means of drying hands; continuous cloth towel systems may not be allowed, warm-air dryers or single use paper towels are good
4. Waste containers required if disposable paper towels are used
5. Signage indicating employees are required to wash hands before returning to work
Food service equipment must be designed and purchased with sanitation in mind. Food-contact surfaces must be safe, durable,
corrosion-resistant, non-absorbent, sufficient in weight and thickness to withstand repeated warewashing, smooth and easy to
clean, resistant to pitting, chipping, crazing (spider cracks), scratching, scoring, distortion, and decomposition.
Look for these marks on sanitary equipment
design
Stationary equipment must be mounted on legs at least 6 inches off the
floor or be sealed to a
masonry base.
Stationary tabletop equipment mounted
on legs needs a minimum clearance of 4 inches above
the tabletop.
A warewashing machine needs very short water pipes,
information posted on water temperature, conveyer speed, water pressure, and chemical concentration, and a readable thermometer with a scale in
increments no greater than 2°F.
Water in the food service area must be potable…
safe to drink. Non-public water systems, such as private wells, should be
tested annually.
A cross-connection is dangerous because it allows the possibility of backflow… a
reverse flow of contaminants back into the potable water system.
The faucet/water flow must be above the rim of the sink, bucket, or pan
being filled.
An air gap is a vertical, physical separation
between the end of a water supply outlet and the flood-level rim of a
receiving vessel. Air gaps and vacuum-breakers are
backflow prevention devices.
Levels of lighting are measured in foot candles… a unit of illumination one foot from a uniform source of light. Lumens, luxes, and luminaires also measure light
intensity.
Shatter resistant bulbs or protective metal mesh or
plastic covers help prevent contamination
from broken bulbs.50 foot candles: food preparation areas
20 foot candles: hand- and warewashing areas, buffets, displays for produce or packaged food, restrooms, utensil storage areas
10 foot candles: inside walk-in refrigerators and freezer units, dry-storage areas, dining rooms (while cleaning)
All food-contact surfaces must be washed, rinsed, and sanitized…
A. After each use B. Anytime you begin working with another type of food C. Anytime you are interrupted during a task and the tools or items you have been working with may have been contaminated D. At 4 hour intervals, if constantly used
Items and areas can be heat-sanitized or chemical-sanitized...
to reduce the number of microorganisms on a clean
surface to safe levels.Chemical-sanitizing (chlorine,
iodine, or quadternary ammonium compounds called quats) can be done by immersing a clean object
in a sanitizing solution for a required length of time OR by
rinsing, swabbing, or spraying the object with a concentration of
sanitizing solution. Concentration, temperature, and time of contact are three factors influencing the effectiveness of sanitizing solutions. A sanitizer
test kit can test the concentration of a sanitizing solution.Scrape – Wash – Rinse – Sanitize – Air dry
Store flatware, glassware, and utensils so employees don’t have to touch food or beverage-contact surfaces
when picking it up.
Store chemicals in original containers, away
from food-preparation areas. OSHA requires that suppliers provide Material
Safety Data Sheets (MSDS) for each
hazardous chemical.
Hang mops, brooms, wiping cloths, and brushes on hooks
to air-dry. Clean, rinse, sanitize, and air-dry buckets.
An integrated pest management program uses preventative measures to keep pests from entering a facility and control measures to
eliminate any pests that do get inside.
The 3 components of a pest management program: deny pests access to the facility; deny pests food,
water, and a hiding/nesting place; work with a licensed
pest control operator to eliminate pests that do
enter.
Cockroaches are usually seen only at night. A strong, oily odor is a sign of infestation. Droppings look like black pepper. They have capsule-shaped egg cases that are
brown, dark red, or black and may appear leathery, smooth, or shiny. Cockroaches often carry disease-causing microorganisms such as salmonella, fungi,
parasite eggs, and viruses.
A mouse can get through a hole the size of a dime.
A rat can get through a hole the size of a quarter.
Seal around pipes; cover
floor drains with grates; seal
cracks in floors and walls; install
self-closing devices or door sweeps on all doors; screen windows and
vents.
Signs of infestation: signs or sounds of gnawing (rats and mice gnaw to wear down their teeth which grow continuously); droppings (fresh ones are black and shiny, old ones are gray); tracks on dusty surfaces; scraps of paper, cloth, hair, and other soft materials
used in nests; holes
Rodents are a serious health hazard, eating and ruining food, damaging property, and spreading disease.
The United States Department of Agriculture (USDA) is the federal agency responsible for
inspection and grading of meat, poultry, dairy, and egg products as well as fruits and vegetables shipped across state lines.
The Food and Drug Administration (FDA) write the government’s recommendations in the Food Code (minimum standards for food safety) and inspects food service operations that cross state lines (on
planes, trains, and ships) and food processing plants.
Health Inspectors are employed by the city, county, or state. They inspect food service operations within their
jurisdiction.
Health inspectors can ask for voluntary closures OR issue an immediate suspension of an operating license, IF…
A. There is a significant lack of refrigeration B. Sewage has backed up into the establishment itself or into its water supply C. There is an emergency, such as a fire or flood.
D. There is a serious infestation of insects or rodents. E. There is a long interruption of electrical or water service.
It is the manager’s responsibility for keeping food safe in a food service operation. The goal of a
food safety inspection program is to evaluate whether an
establishment is meeting minimum standards for food
safety and sanitation, to protect the public’s health, and to convey
new food safety information.
During an inspection, ask for identification and if it is a routine inspection or a response to a customer complaint, etc. Accompany the inspector.
Be prepared to provide records. Take notes. Cooperate. Be professional.
Discuss violations and time frames for correction of the deficiencies.
Correct any problems; usually expected within 48 hours to correct critical violations.