Exam 1: Food additives Flashcards
Most common food additives
sugar and salt
Food additives are
chemicals added to foods to prevent spoilage and extend shelf-life, generally recognized as safe (GRAS)
Causes for increased demand for more convenience foods
- Larger population
- more workforce
- more complex family lifestyle
Food additives
- produce uniform properties
- standardize functional factors (thickening, stabilization)
- prevent oxidation, extending shelf-life
- Control pH to improve flavor and texture
- enrich foods with nutrients
Preservatives
prevent spoilage, changes in color, flavor, or texture, delay rancidity
preservatives are used in
fruit jellies, beverages, baked goods, cured meats, oils, cereals, dressings
Sweeteners
added sweetness with or without added calories
Sweeteners used in
beverages, baked goods, confections, sugar, processed foods
Color additives
offset color loss due to exposure to air, light, temperature, moisture; correct natural color variation
Color additives are used in
processed foods
Flavors and spices add flavor in
puddings, jello, cake mixes, dressings, candy, beverages, and ice cream
Flavor enhancers
enhance flavors without adding their own flavor in processed foods
Fat replaces provide texture in reduced-fat foods such as
baked goods, dressing, dessert mixes, dairy products
Nutrients
replace vitamins and minerals lost during processing or add nutrients that may be lacking
-enrichment and fortification in flour, cereals, breads, beverages, energy drinks/bars
Emulsifiers
prevent separation, reduce stickiness, help products dissolve more easily
Emulsifiers are used in
salad dressings, peanut butter, chocolate, frozen desserts
Stabilizers, thickeners, binders
produce uniform texture and improve mouthfeel
Stabilizers, thickeners, binders used in
frozen desserts, dairy products, cakes, dressings, jellies, sauces
pH control agents control ______ and _____ and prevent ____
acidity, alkalinity, spoilage
pH control agents are used in
beverages, frozen desserts, chocolate, low-acid canned foods
Leavening agent promotes rising of
baked goods
Anti-caking additives
prevent moisture absorption to keep powdered foods free-flowing in salt, baking powder, and powdered sugar
Humectants
retain moisture in marshmallows and confections
Dough conditioners produces more
stable dough in baked goods
Firming agents
maintain crest and firm foods i processed fruits and veggies
Salmonellosis
- Found in raw milk or eggs, undercooked meats, oysters and clams from polluted water
- incubation period of 24-48 hours
- 40,000 cases/ year
Shigellosis
Spread through feces, fingers, flies, and foods handled by unsanitary workers
- 14,000 cases per year
- 4-7 day incubation period
Listerosis
- 10X more common in pregnant women
- Found in soft cheeses, poultry, raw milk, raw eggs, and seafood
E. Coli
- Spread through fecal matter infections, unpasteurized foods
- 265,000 cases per year
- 2-8 day incubation period
Vibrio
- Immuno-compromised individuals are most susceptible
- Found in undercooked shellfish
Most common types of bacterial food poisoning
Staph. Aureus and clostridium
Viruses that contaminate food
norovirus
Parasites that contaminate food
giardiasis, roundworms, flat worms
Environmental factors that contaminate food
lead, natural (mercury)
Trigonosis is found in
pork
Safe cooking temperatures for beef, pork, veal and lamb
145 F and allow to rest for at least 3 minutes
Ground meats safe cooking temp
160 F
All poultry should be cooked to
165 F
Date tells store how long to display a food item
Sell-by
Date recommended for best quality/flavor, not a safety date
Best if used by
Late date recommended to consume for peak quality
use by
Most fresh meats are safe in the fridge for
1-2 days
Cooked meats are safe in the fridge for
3-4 days
Eggs can stay in the fridge safely for
3-5 weeks
3 ways to safely thaw food
Refrigerator, microwave, sink under cold water
Steps to reducing food waste
- Only purchasing foods you’ll eat in timely manner
- Plan and meal prep
- freeze foods you won’t eat in time
- revive foods
Reviving wilted food
soak in ice water bath for 5-10 minutes
Reviving stale food
toast crackers, chips, bread in oven for a few minutes
Reviving salty foods
add vinegar, lemon juice or brown sugar to mellow or soak a raw peeled potato to soak up some salt
Reviving burned foods
remove from heat, remove the blackened parts and cover with a damp cloth to remove the burned flavor
Reviving overcooked foods
puree overcooked veggies with soup stock, milk or cream to make a soup base
Number of people currently malnourished
2 billion people (3rd leading cause of childhood death)
Most common global micronutrient deficencies
iron, iodine, vitamin A, zinc
Food insecurity
limited or uncertain availability of nutritionally adequate foods or limited capabilities to acquire foods in socially acceptable ways
Supplemental Nutrition Assistance Program (SNAP)
Helps provide food for about 46 million Americans
Annual cost of $74 billion
Average is about $4.23/day
Special Supplemental Food Program for Women, Infants, and Children (WIC)
8 million participants annually
annual cost of $7 billion
Monthly cost per participate is $43.58
WIC cereal requirements
Must contain a minimum of 28 milligrams of iron/ 100 grams of dry cereal
Must contain no more than 21.2 g of sugars/ 100 g of dry cereal
At least one half o the breakfast cereals on a State’s authorized food list must have whole grain as the primary ingredient AND meet a health claim
School Meal Programs
- Must meet requirements to get funded
- minimal foods are hand-prepared
- processed foods meet these requirements but taste terrible
- competitive foods (vending machines) don’t have to meet requirements
Nutrition Services Incentive Program
- Provides cash or commodities for elderly
- Provides food at Congregate Meals program sites for people over 60
- Home delivered meals are available
It is essential that patients know
what food assistance might be available to them
Influences of food habits
Social, psychologic, physical, physiologic
Social influence on food habits
- symbolizes warmth and acceptance and memories and interactions
- Marketing and economics uses this
Psychologic influence on food habits
- habits, preferences, emotions, cravings
- positive or negative experiences with food
Physical influence on food habits
- food availability, food technology, geography, season, climate
- storage and cooking facilities
Physiologic influence on food habits
-allergies, disability, health and disease, nutrient and energy needs
Cultural development of food habits
- Ethnicity, religion, geographic location and lifestyle
- immigration from one part of the world to another influences food choices
- American food patterns are spreading globally (increasing risk for chronic disease, HTN, and diabetes)
Mexican food habits
- dried beans, tomatoes, corn and squash
- chili peppers, garlic, onions
- Lard
Puerto Rican food habits
- rice and beans
- tropical fruits and starchy veggies
- Lard
Native American food habits
- corn, beans, rice
- blue corn flour
- Lard
African American food habits
- Pork, corn, green leafy veggies, fried foods, okra, turnips, potatoes
- Sunday dinner feast of comfort foods
- Lard or shortening
French/ Cajun food habits
- Crawfish, shrimp, sausage, French bread, pralines
- Hot chili sauce, peppers, bay leaves, thyme, file powder (sassafras)
- Poultry fat
Chinese food habits
- rice, stir-fry veggies, soy, eggs, green tea
- soy sauce, ginger, almonds, sesame seeds
- peanut oil
Japanese food habits
- sticky rice, sushi, steamed veggies, seafood, soybeans, seaweed, tea, soups
- soy sauce
- soy and rice oils
Italian food habits
- bread, pasta, cheese, sautéed veggies, fresh fruit as snack or dessert
- herbs, garlic, wine, olive oil, tomato puree
- olive oil
Greek food habits
- bread, cheese, yogurt, lamb, fish, eggs, veggies, fruit as dessert
- olive oil
Jewish dietary laws
Meat: pork, rabbits and birds of prey are avoided
Meat and Milk not to be eaten in the same meal
Fish only with fins and scales allowed
No eggs with blood spots
Muslim dietary laws
- Milk is allowed at any time
- Fruits and veggies allowed unless fermented
- Breads and cereals permitted unless contaminated
- Seafood and most land animals allowed. Pork and birds of prey avoided
- Alcohol is strictly prohibited
Things that contribute to changing food patterns
- More women working (60%)
- More family meals= better health outcomes, less risky behavior
- We turned into grazers
The more people you eat with the ____ you eat
more
Snacks provide ____ of all energy
1/4
If you eat from a large package you eat _______ than smaller sizes
20-25%