Science of food exam 1 Flashcards
Interrelated operations
High volume, low mark up
Bulking agents
low-fat foods
Expiration date you see on foods
Sell by, use by, best if used by, and codes with just some date
Closed or coded
Dating might appear on shelf-stable products such as cans and boxes of food for manufacturer. They aren’t meant for the consumer to interpret as “use by” dates
Use by or freeze by dates
Most important with respect to food safety
How long does Spam last?
2-5 years on shelf. 3-4 days in fridge after opened
Fresh produce
Subject to processing before it reaches the supermarket shelf
Liquid
32 degrees F to 212 degrees F
Solid/ice
Below 32 degrees F
Plant foods
Exclusive sources of carbohydrates
INsulin and glucagon
Help maintain blood glucose levels
Amino acids
Carbon, hydrogen, oxygen, and nitrogen. Joined together by peptide bonds. The structure determines the function
Minerals
Come from plants and animal sources
Fat soluble vitamins
Dissolve in fat. Stored in body
Carotenosis
Orange discoloration of the skin
Vitamin A Sources
Liver, fish oil, eggs, red/yellow/orange/dark green veggies (carontenoids)
Drinking a small glass of 100% fruit juice or vitamin C rich food can
Help boost iron absoption
Food to increase
Fruits, vegetables, whole grains, and low fat or fat free milk
Homogenization
Mechanical mixing in milk that breaks the fat into droplets so small that they stay in suspension
Dehydration: 2 molecules joined from a reaction
2 simple sugars join or 2 amino acids join
Brain senses a decrease in
Blood volume and increase in concentration of dissolved substances in blood
Sugar and carbohydrates
Sugar is sweet; Starch is a bland carbohydrate
Fiber
Indigestible carbohydrate
Monosaccharide #1: Glucose
Blood sugar that rarely occurs as a monosaccharide in foods; found as part of disaccharide or starch
Monosaturated fat
Avocado, peanuts, olive oil
Coagulation of proteins at gas-liquids
Gives stability and rigidity to foams
Muscles
Primarily fibers made of 2 proteins (actin and myosin)
Riboflavin (B2) function
Bacteria in the gut can produce a small amount but not enough
Smoking can
deplete vitamin C levels in the body
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