Unit 33Food Science

• Nutritional needs of humans• USDA nutrition pyramid• Processing and preserving food• Food products from crops• By-products

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Nutritional Needs of Humans

• Carbohydrates

• Fats

• Proteins

• Vitamins

• Minerals

• Water

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USDA Food Pyramid• Bread, cereal, rice, pasta group

• Vegetable group

• Fruit group

• Milk, yogurt, cheese group

• Meat, poultry, fish, dry beans,

eggs, nuts group

• Fats,oils, sweets group

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Processing and Preserving

• Fermentation

• Refrigeration

• Canning

• Dehydration

• Freeze-drying

• Irradiation

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Food Products from Crops

• Cereal grains– Rice– Wheat– Corn– Barley– Oats

• Oil crops– Soybeans– Cottonseed– Peanuts– Rape– Palm nuts– Coconuts– Olives– Corn

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Food Products from Animals

• Milk and milk products—dairy cattle

• Meat– Beef– Dairy steers– Sheep– Hogs– Poultry– Fish– Game

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By-products• Hides—leather for shoes, sports equipment, gloves• Fats—oleomargarine; soap; candles; lubricants; fertilizer• Variety meats—heart; liver; brains; sweetbreads• Hair—paintbrushes; toothbrushes; air filters; mattresses• Horns and hooves—combs; buttons; decorative items• Blood—shoe polish; refining of sugar; stock feeds• Meat scraps and muscle tissue—fertilizer; feed• Bones—fertilizer; glue; stock feed• Intestines—strings for tennis rackets, musical instruments• Glands—pharmaceutical industry for medical drugs• Collagen—gelatin; glue • Contents of the stomach—fertilizer

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New Foods on the Horizon

• Electronic monitor for bruised fruit

• Cholesterol-free eggs

• Flavor-saving fruits and vegetables

• Decreased loss of nutrients in poultry

© 2005 Thomson Delmar Learning. All rights reserved.