Culinary Nutrition Nutrition Basics. The Nutrients Define the six categories of nutrients Describe...
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Transcript of Culinary Nutrition Nutrition Basics. The Nutrients Define the six categories of nutrients Describe...
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Culinary NutritionNutrition Basics
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The Nutrients Define the six categories of nutrients Describe the sources and functions of
each nutrient category Identify nutritious meals and the
preparation methods used to prepare them
Describe the types and uses of food additives
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The nutrients
Before you make any suggestions to make menu items more nutritious, you need to understand the basics of nutrition.
Nutrients are chemical compounds that help the body carry out its functions.
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Six categories of nutrients Carbohydrates Proteins Fats Vitamins Minerals Water
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Carbohydrates The body’s main source of energy, or
fuel Simple carbohydrates, or sugars,
include both natural and refined, or processed sugars.
Natural sugars are part of foods like fruits, vegetables, and milk.
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Carbohydrates Complex carbohydrates are starches,
such as pasta, grains, cereals, and legumes, or the seeds and pods from certain plants.
Contain many other nutrients your body needs such as vitamins and minerals.
Body breaks down simple and complex carbohydrates into a usable energy source known as glucose.
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Fiber A unique form of a complex
carbohydrate that does not provide energy is fiber.
Two types: Soluble fiber which dissolves in water Insoluble fiber which absorbs water. Fiber is key to the functioning of the
digestive system and the elimination of wastes.
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Proteins Protein builds, maintains, and repairs
body tissues Essential for healthy muscles, skin,
bones, eyes, and hair, and it plays an important role in fighting disease.
Proteins are broken down into small units called amino acids.
22 amino acids.
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Fats and Cholesterol Fat and cholesterol play an essential
role in keeping the body healthy. There is strong evidence that shows a
diet higher than 30% in fat and cholesterol can put you at risk for such diseases as heart disease and cancer.
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Fat Fat regulates bodily functions and helps
carry fat-soluble vitamins. Source of stored energy Cushion for body organs Fat makes food taste good Three categories Saturated Mono-unsaturated Polyunsaturated
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Cholesterol Found in all body cells and in all animal
foods, such as meat, egg yolks, and dairy products
Fatlike substance The body needs and does make its own
cholesterol to produce cell membranes, hormones, Vitamin D, and bile acids, which help digest fats.
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Cholesterol Two types of lipoproteins Low-density High-density lipoproteins LDL or bad cholesterol can contribute to
cardiovascular or heart-related problems because it can build up on artery walls.
Buildup slows or prevents the flow of blood to the heart and other vital organs.
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Cholesterol Higher HDL or good cholesterol, helps
lower the amount of cholesterol in the blood.
Making wise food choices can help reduce the amount of harmful cholesterol in the blood.
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Saturated fats Fats that tend to increase the amount of
cholesterol in the blood and are solid at room temperature are called saturated fats.
Saturated fats have been linked to an increased risk for heart disease and other cardiovascular problems.
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Monounsaturated fats Usually liquid at room temperature Considered more healthful than
saturated fats because they generally do not raise cholesterol levels.
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Polyunsaturated fats Usually liquid at room temperature Many fats such as those found in
margarine and shortening have gone through a hydrogenation process.
Hydrogenation is a process in which hydrogen is added under pressure to polyunsaturated fats such as soybean oil.
Changes liquid oil into a solid.
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Vitamins Vitamins help regulate many bodily
functions and assist other nutrients in doing their job.
Vitamins are divided into two types: Water-soluble vitamins dissolve in
water, must be consumed every day since the body loses them in waste fluids
Vitamin C and all the B vitamins
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Fat-soluble vitamins Fat-soluble vitamins are stored in the
liver Vitamins A, D, E, and K are fat-soluble. If taken in large quantities for a long
period of time, can accumulate and cause disease or even death.
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Minerals Minerals are an essential part of your
bones and teeth Regulate body processes and are
needed in very small quantities Two categories: major and trace Body needs more of the major minerals
than it does of the trace mineral, but both are equally important
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Water Water is essential for sustaining life Water makes up 60% of an adult’s body
weight Cleans toxins from the body, cushions
joints, and increases the body’s ability to transport nutrients.
Adults need 64-80 oz. of water a day
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Food additives Additives are substances added to foods
to improve them in some way Can extend a food’s shelf life Improve its flavor, texture, or
appearance
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11-2Guidelines for Meal Planning For almost 100 years the United States
government has provided dietary guidelines and recommendations to help consumers make healthful food choices.
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Recommended Dietary Allowances Essential nutrients are developed by the
Food and Nutrition Board of the National Academy of Sciences.
Designed to meet the nutritional needs of the majority of healthy Americans.
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Nutrition Labels Nutrition Labeling and Education Act of
1990 most foods must include nutrition labels.
Nutrition labels provide information on serving size, calories, and nutrients.
Nutrients are measured in two ways grams and daily value percentages.
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Nutrition Labels Daily values are the amount of nutrients
a person needs every day based on a 2,000-calorie diet
Serves only as a guide since we are different
The nutrients listed first on a nutrition label are the ones most people eat in adequate amounts.
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Nutrition Label Nutrients at the bottom of the label are
the nutrients many people lack in their diet: Vitamin A, Vitamin C, Calcium, and iron.
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Dietary Guidelines for Americans The Dietary Guidelines for Americans are
published by the USDA and the U.S. Department of Health and Human Services.
These guidelines offer recommendations on how to make healthful daily food choices
Help you make healthful choices to meet your nutrient requirements while eating the number of calories that support a healthful body weight
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Meeting Dietary Needs My Plate is useful for planning balanced
menus for healthy adults. Many factors can influence dietary
needs including age, activity level, lifestyle, and health.
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American Diets Vegetarians do not eat meat or other
animal foods. Eat plant-based foods such as
vegetables, grains, fruits, and beans Lower in fat, saturated fat, and
cholesterol than typical American diets. Four types of vegetarians:
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Vegetarians Diets Lacto vegetarians eat or drink some dairy
products such as cheese and milk, but don’t eat eggs
Ovo vegetarians eat eggs in addition to foods from plant sources
Lacto-ovo vegetarians include dairy products (lacto) and eggs (ovo) in their diets
Vegans do not eat any meat or animal products.
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Health Diet is key in preventing and treating
many health conditions Cardiovascular disease Food allergies Cancer Phytochemicals are natural chemicals
such as those found in plants, fruits, vegetables, grains, and dry beans
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11-3 Culinary Principles Preventing Nutrient Loss How foods are prepared, cooked, and
stored is critical to their nutritional content.
Destroy a food’s color, texture, and flavor
By learning how to properly care for and prepare foods, you can ensure that the food you’re serving is of the highest nutritional value possible.
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Preventing Nutrient Loss Time Foods lose nutrients with age, so use
them as soon as possible Water Nutrients especially water-soluble
Vitamins B and C will leach or dissolve into the water.
Avoid letting vegetables rest in water before or after cooking.
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Cooking Follow these general guidelines while
cooking: High temperatures can destroy vitamins
in foods such as deep-fried potatoes. Cook foods at the specified temperature.
Prolonged cooking also contributes to nutrient loss. Do not overcook food items, such as boiled vegetables.
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Healthful Cooking Techniques Steaming Grilling Poaching Stir-frying Microwaving
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Storage Nutrients can still be lost after food is
cooked Storage exposes food to the harmful
effects of water, light, air, and time. Using cool temperatures, lessening
holding time, and cooking in smaller batches will minimize these effects
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Storage Temperature Cool temperatures can
slow down the processes that destroy a food’s nutrients.
Blanching plunge cooked vegetables into cold water to stop the cooking process.
Holding. Food should not be held in a steam table for a long period of time
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Storage Batching: Batch cooking is the process of
preparing small amounts of food several times throughout a foodservice period.
Allows the kitchen to turn out freshly prepared meals for customers to enjoy.
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Reducing fat Reduce total fat Reduce fat Reduce saturated fat Replace fat Offer plant-based foods Change cooking techniques Use seasonings and flavorings Use special equipment Reduce portion size
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