Capacitación en panadería
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Transcript of Capacitación en panadería
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EGG PRODUCTS AND TRENDS
Dr. Shelly McKee Director of Technical Services
USA Poultry and Egg Export Council
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Consumer Trend- All day breakfast • 72% of adults want operators to offer breakfast items throughout the day
• Breakfast is still the fastest
growing foodservice day part and accelerating
• Only restaurant day part with sustained visit growth over the last several years
• Morning meal visits are
forecast to grow by 7% over the next nine years
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Consumer Forecast 2017
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Frittata bites Concept
Egg White Frittata Bites with Smoked Salmon & Spring Asparagus Light egg white frittata bites studded with asparagus, smoked salmon and fresh dill. Frittata Bites with Shiitake Mushrooms, Bacon & Forbidden Rice Omelet bites with smoky bacon, fire-roasted shiitake mushrooms and black forbidden rice.
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Consumer Forecast 2017
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Nutrition SHIFT in THINKING DRIVEN by RESEARCH
1984 1999
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Nutrition
POPULARITY of PROTEIN Most Americans agree it’s important to consume enough protein, and protein can be a part of a healthy diet
• Egg protein value is highest • of all protein sources- most
biologically available
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Egg Industry Structure
Producers
Shell Egg Grading
Further Processors
Bakery Supply Food Manufacturers Food Brokers
End Users
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The design and construction of EGG PROCESSING EQUIPMENT
meets E-3-A or 3-A Sanitary Standards
HOLDING Refrigerated
BREAKING and separating yolks, whites, shells
– Filtered – Mixed – Chilled REFRIGERATED
LIQUID EGG PRODUCTS
FROZEN EGG PRODUCTS
DRIED EGG PRODUCTS
Egg Products Processing
PASTEURIZATION
PACKAGING
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Egg Products • 82.2 billion US shell eggs annually produced
- 1/3 processed into liquid, frozen or dried products • Egg Product Inspection Act 1970
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Processed Egg Products
• Refrigerated (as liquid)
• Frozen (as liquid)
• Dried
• Specialty Products
Processed to fit foodservice and food industry ingredient specifications.
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Usage: Foodservice and the commercial food industry
Availability: Bulk tank trucks, totes, metal or plastic containers, polyethylene coated fiber or laminated foil and paper cartons, and hermetically sealed polyethylene bags. Container size from small bags to cartons (8 oz. to 5 lb.) and lacquer coated tins and plastic pails up to 40 lb.
Advantages: Pasteurized, quick and easy to use, 12 week shelf- life at 4 C (only when not opened)
Storage & Handling: Store according to processor’s recommendations.
Use within four to five days once opened except for extended shelf life products for which the supplier’s recommendations should be followed
Refrigerated Liquid Eggs
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Refrigerated Liquid Egg Products- 12 week shelf-life
• Whole eggs, whites or yolks
• Sugared egg yolks
• Salted whole eggs or yolks
• Scrambled egg mix
• Cooked scrambled eggs
• Extended shelf life whole eggs, whites or scrambled egg mix
3.2
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Frozen Egg Products- up to 1 year shelf-life
• Whole eggs, whites or yolks
• Scrambled egg mix
• Salted whole egg or yolks
• Sugared egg yolks
• Whole eggs and yolks with corn syrup
• Whole eggs with or without citric acid
• Whole eggs with corn syrup 3.3
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Usage: As an ingredient for the food industry
Availability: 4, 5, 8 and 10 lb. pouches or waxed plastic cartons, and 30 lb. containers
Advantages: Long shelf life (1 year), functionality, variety blends
Storage & Handling: Keep frozen at temperatures below
10°F (-12°C). Use as soon as possible
Frozen Egg Products
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FROZEN PRODUCT (lb)
SHELL EGG* (No.)
EGG SOLIDS (Kg)
Whole 1 9 0.113 solids + 0.34 water
Yolks 1 22
0.20 solids + 0.25 water
White 1 14
0.05 solids + 0.40 water
Frozen Egg Product Equivalency to Shell Eggs
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Dried Egg Products
• Whole egg or yolk solids • Dried egg or scrambled egg mix • Various types of whole egg solids • Free flowing whole egg or yolk solids • Stabilized (glucose free) whole egg
or yolk solids • Blends of whole egg and/or yolk with
carbohydrates
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Advantages of Using Processed Egg Products
Reduced Risk of Contamination • All liquid, frozen and dried egg products are pasteurized • There has never been a food-borne illness associated with
pasteurized egg products
Extended shelf-life • Refrigerated liquid egg products - 12 weeks at 4 C • Frozen egg products - 1 year or more • Dried egg products - 1 year or more with no
refrigeration required
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Advantages of Egg Products Reduced Risk of Contamination
• All liquid, frozen and dried egg products are pasteurized
• There has never been a food-borne illness associated with pasteurized egg products
Convenience • Easy storage • No extra labor for breaking shell eggs • Always ready to use
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• Approximately 50% water, 17% protein (mainly ovovitellin), 33% lipids (mainly triglycerides, lecithin [phospholipids] and cholesterol)
• Minerals: iron, phosphorus, calcium, manganese, iodine, copper and zinc
• Vitamins A and D, B12, E, biotin, choline, folic acid, inositol, pantothenic acid, pyridoxine and thiamin
• Xanthophyll: main yellow pigment
Egg Yolk Composition
Water
Protein
Lipids
Egg Yolk Composition
50% 33%
17%
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Egg White Proteins
Protein Ovalbumin Conalbumin Ovomucoid Ovomucin Lysozyme Globulins
Ovoflavoprotein Cystatin Avidin
Function Principle protein Binds metal ions Trypsin inhibitor
Thick white structure Lyzes some bacteria Important in foaming
Binds riboflavin Protease inhibitor
Binds biotin
5
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Functions
• Aeration/Foaming • Emulsification • Coagulation • Flavor & Color • Humectancy & Shelf Life
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Aeration- high whip egg whites
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Eggs For Aeration
• Distinct cellular structure from eggs’ leavening action
• Structural framework helps to hold product together
• Increased volume for lighter foods
• Airy texture and smooth mouth-feel, air bubbles decrease in size and increase in number
• More integrated, sponge-like texture, as more air is incorporated the foam becomes stiff
When eggs are beaten, air is incorporated, creating a lighter, more air-filled product.
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• Colloidial dispersion in which a gaseous phase is dispersed in a liquid phase
• air trapped during beating • air bubbles decrease in
size and increase in number
• as more air is incorporated the foam becomes stiff
Foaming/Surface Activity
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• Foam ability (volume) due to ovalbumin
• Foam stability due to ovomucin
• Yolk contamination -”fat bullets” destroy foam
Foaming/Surface Activity
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Factors Affecting Egg Foams
• Degree of beating • Blending • Homogenizing • Temperature • pH • Fat • Salt
• Water • Manipulation • Heat • Copper • Sugar • Acid
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Additives Affecting Foams Ability of High Whip Egg
Whites • Whipping aids and stabilizers
• Triethyl citrate -liquid egg white • Sodium lauryl sulfate- dried egg
products • Gums such as xanthan-stabilizers
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High-Gel Egg White
• Higher hot-room pasteurization temperatures (>60°C/140°F) improve gelation properties
• More alkaline pHs (pH 11) and lower pHs (e.g. pH 5.0) improve gelation properties
• Some egg processors have their own proprietary process to produce high-gel egg white
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Factors Affecting Gelation of Egg White
• Slide with definition of high gel
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Liquid Frozen Whole Egg Baking vs Food Service
• Baking whole egg without citric acid
• Food service whole with egg with citric acid
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Emulsification
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FROZEN EGG YOLK PRODUCTS
• Frozen yolk has 10 % salt or sugar added to prevent irreversible protein gelation. Result is a smooth creamy, viscous yolk.
• Great for emulsions
such as mayonnaise and savory sauces
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FROZEN WHOLE EGG PRODUCTS
• Used to emulsify batters such as brownies, muffins, etc
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Emulsification The phospholipids, lipoproteins and proteins found in egg yolks are surface active agents that enable the formation of emulsions from immiscible liquids such as oil and water.
• A stable mixture of two immiscible liquid phases, one which is dispersed in the other
• Egg yolks can be used to fortify whole egg blends to increase emulsifying action
• No essential differences are found in emulsifying properties of dried whole egg and yolk and fresh liquid eggs
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Definition of Emulsions • Mixture containing two liquid phases that are
normally immiscible under ordinary conditions
Oil
Water Oil
Water
Photo: http://www.mardre.com
Photo: http://www.cookingpanda.com
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3 Components necessary for a stable oil-in-water emulsion – Oil – Water – Interface, proteins, phospholipids, lipoproteins from egg yolk
Oil
Proteins, phospholipids, Lipoproteins frpm egg yolk
Water
Emulsions/Surface Activity
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Good Stable Emulsion
• Should be viscous to hold suspended ingredients in place
• Droplets dispersed (oil or water) should be small enough to remain in suspension and should be evenly distributed throughout the matrix
Applications • Mayonnaise • Hollandaise sauce • Salad dressings • Baked goods
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• Eggs (containing the emulsifier lecithin and other lipoproteins) bind the ingredients together and prevent separation.
• Mayonnaise is made by combining lemon juice or vinegar with egg yolks.
• Chocolate- all chocolate contains lecithin
• Bread- give texture and volume
Emulsification
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Thickening and Coagulation
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Thickening & Coagulation Whipping or heating allows products that contain eggs to thicken and/or coagulate, converting the mixture from a liquid state to a solid or semi-solid state.
• Can use both yolks and whites • Proteins denature • Binds products naturally • Suspends other ingredients • Gelling agents in custards • Thickening agents in soft pie fillings when the
egg custard is heated • Creates texture and height • When the egg foam is heated, creates
structural stability
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Factors Affecting Coagulation
• Heat - protein denaturation
• Mechanical means - beating, chopping
• Sugar - raises temp. of coagulation
• Acids - decrease temperature of coagulation
• Alkali - high alkali can induce gelling of egg white
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Changes in structure of egg proteins (yolk and albumen) resulting in thickening or change from a fluid to solid or semi-solid state
Thickening & Coagulation
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Coating & Binding
With heat, egg coagulation imparts rigidity causing mixtures to gel and ingredients to adhere.
• Egg white is an excellent binding ingredient
• No essential differences are found in binding properties of dried whole egg and yolk and those of fresh liquid eggs
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Coating & Binding
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Coating and Binding
Glaze Result
Egg + Salt Less intense shine, golden surface
Egg + Milk Medium shiny surface
Egg + Water Shiny surface
Egg yolk + Water Shiny golden surface
Egg yolk + Cream Shiny brown surface
Egg white Light colored, crisp surface
Egg white + Water and nuts and/or seeds
Sticky surface for adhering nuts and/or seeds
Egg white + Milk Transparent shiny surface
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Humectancy & Shelf Life
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Humectancy & Shelf Life
• Eggs improve cell structure and enable products to maintain structure during baking, thus reducing moisture loss from baked products
• Egg proteins also bind water, making it less available for microorganisms to grow and cause spoilage
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Flavor & Color
• Eggs contain fats which carry and meld flavors in food products
• Eggs add flavor and enhance other flavors
• Egg yolks impart rich color and are used to fortify whole egg blends for a deeper color in baked products
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Flavor and Color
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Cakes /Pastries Foaming, Coagulation, Color
Candy/Eclair/Confectionary Inhibition of Crystals
Custards/Puddings Coagulation + Flavor
Omelets/Scrambled/Poached Coagulation + Flavor
Mayonnaise/Salad Dressing Emulsification
Meringues/ Soufflés Foaming
Ice Cream Emulsification, Texture, Inhibition of Crystals
Meat (patties, sausages) Binding by Coagulation
Fish Products (surimi) Binding by Coagulation
Pancakes /Crepes/Waffles Flavor, Coagulation
Doughnuts /Croissants Texture , Flavor,
Noodles/Pasta Color, Flavor, Nutrition, Bind
Health Foods /Weaning Foods Protein
EGG USAGE and FUNCTIONALITY
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Gracias!!!