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FSN Exam 2
N/A
93
Science
Undergraduate 1
11/08/2010

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Term
Amino Acids
Definition
Basic building blocks of proteins
Term
Peptide
Definition
Two amino acids joined by peptide bond
Term
Polypeptide
Definition
200-300 amino acids
Term
Three-dimensional Protein
Definition
One or more polypeptide chains
Term
Essential Amino Acids
Definition
Phenylalanine, Valine, Tryptophan
Threonine, Isoleucine, Methionine
Histidine, Arginine, Lysine, Leucine
Term
Protein Digestion
Definition
Before- enzymes too big to be digested
1. Proteins break down starting in stomach (gastric protease)- Pepsin
2. Polypeptides broken down in small intestine (pancreatic protease)- tripsin
3. Polypeptides broken down in intestines (intestinal protease)- dipeptidase
4. Broken down into amino acids
Term
Saccharides
Definition
Building blocks of carbs (sugars)
Term
Polysaccharides
Definition
Complex sugars, long chains of sugar units (starches), glycogen, cellulose, lignin, chitin
Term
Monosaccharides
Definition
Simple sugars; glucose, fructose, galactose
Term
Disaccharides
Definition
Double sugars; maltose (2 units of glucose), Sucrose (glucose and fructose), Lactose (glucose and galactose)
Term
Carbohydrate (CHO) Digestion: Mouth
Definition
broken down into starch or sugar, starch broken down by salivary amylase to dextrin, sugars become maltose, sucrose, lactose which don't break down in the mouth
Term
Amylose
Definition
Form of starch smaller than starch molecule dextrin
Term
Pavlov
Definition
Salivate when getting ready to digest carbs; when you smell something good and are hungry
Term
Carbohydrate (CHO) Digestion: Stomach
Definition
No carb digestion, just passing through; starch is dextrin and sugars are lactose, sucrose, maltose
Term
Carbohydrate (CHO) Digestion: Small Intestine
Definition
Dextrin is broken down by pancreatic amylase to become maltose and is done; sugars are currently maltose, sucrose, lactose; maltose-maltase- glucose; sucrose- intestinal sucrase- fructose; lactose- lactase- galactose; NOW left with Starch to Maltose and glucose, fructose, galactose
Term
Carbohydrate (CHO) Digestion: Intestinal Wall
Definition
Maltose for starch stays, glucose stays glucose, fructose and galactose become glucose
Term
Emulsifier
Definition
Mixes two things together that don't mix well (oil and water)- oil on top because it is less dense; oil and water- milk (emulsifier is protein) goes through process of homogenization to blend product and make it all the same
Term
Food Emulsifier
Definition
egg yolk and licithin (from soy beans) makes mayonaise
Term
Phospholipids
Definition
Water soluble end (round) can sit in water and fat soluble end can sit in oil phase; doesn't allow separation, it sits together
Term
Healthiest Oils
Definition
Olive oil and Conolla oil (oil of canada; rapeseed); high in mono-saturated fats and low in saturated fats
Term
Saturated Fat
Definition
No double bonds (stearic acid)
Term
Polysaturated Fats
Definition
Many double bonds (linolenic acid- omega 3 fatty acid)
Term
Monosaturated Fat
Definition
1 double bond (oleic acid); high in conolla and olive oil
Term
Essential Fatty Acids
Definition
Linolenic Acid (Omega 3)
Linoleic Acid (Omega 6)
Term
Cis-
Definition
Bent molecule (Cis-unsaturated fatty acid)
Term
Trans-
Definition
Straight Molecule (trans-unsaturated fatty acid)
Term
Butter and Lard
Definition
Animal Fats
Term
Palm Oil
Definition
High in saturated fats
Term
Fats
Definition
Fats- lipids, oil- liquid fats at room temperature, fatty acids- building blocks of fats (more double bonds, more liquid that can be heated faster)
Term
Stearic Acid
Definition
Saturated fats, 18 acids and no double bonds
Term
Linolenic Acid
Definition
3 double bonds, Polysaturated fats, omega 3 fatty acid
Term
Glycerol
Definition
One fatty chain, smaller- can smell, 18 acids= normal
Term
Diglyceride
Definition
products we go/consume; glycerol molecule with one two fatty acids
Term
Phosphlipid Structure
Definition
Two fatty chains and a phosphorus attached to third chain
Term
Transfat
Definition
made by hydrogenation; small amount naturally occurring in animal based foods; rasises LDL (low density lipoprotein) that increases risk of CHD (coronary heart disease)
Term
Hydrogenation
Definition
addition of hydrogen to vegetable oil in vegetable shortening, margarines, crackers, cookies, snacks, fried foods
Term
LDL
Definition
Low density lipoprotein; associated with plack in artieries; BAD
Term
Saturated Fat
Definition
Main dietary culprit for increased LDL
Term
Trans Fat Regulations
Definition
January 1, 2006- must list trans fat on different line under saturated fat when it contains .5 g or more
Term
Fat Digestion
Definition
Fat, action of bile fluid, emulsified fat (makes fat more water soluble, allows lipids to be brown into glycerols, ect.), pancreatic lipase, glycerols, fatty acids, glycerides
Term
Dietary Guidelines
Definition
Original, no pyramid, updated every five years, four basic food groups (milk, meat, fruits and vegetables, breads and cereals, others)
Term
Pyramid
Definition
Base is the most important, expanded serving numbers, separated fruits and vegetables, meats and other proteins (nuts)
Term
Seven Rules to Health
Definition
1. Eat a variety of food
2. Maintain ideal weight
3. Avoid too much saturated fat and cholesterol
4. Eat foods with adequate starch and fiber
5. Avoid too much sugar
6. Avoid too much sodium
7. If you drink alcohol, do so in moderation
Term
Old Pyramid
Definition
fats, oils, sweets- use sparingly
milk, yogurt, cheese and meat, poultry, fish, dry beans, eggs, nuts- 2-3 servings
vegetables- 3-5 servings
fruits- 2-4 servings
bread, cereal, rice, pasta- 5-11 servings
Term
New Pyramid
Definition
"My pyramid" (2005); personalized, interactive eating plans that asses food choices based on dietary guidelines for americans; sugar causes tooth decay not diabetes, dark veggies, low fruit juices, 1/2 grains whole, lean protein, low fat milk
Term
Cholesterol
Definition
Every cell in our body produces cholesterol, moves proteins around the blood stream
Term
Nutritional Inhibitors
Definition
Egg Whites: Compound- Avidin, binds biotin, counter action- heat inactivation
Egg Whites: compound- conalbumin, binds iron, counter action- heat inactivation
Fish: compoud- thiaminase, destroys thiamin, counter action- heat inactivation
Soybeans: compound- trypsin inhibitor, decreases protein digestion, counter action- heat inactivation
Term
Vitamin C
Definition
60 mg/day for men and women, 40-45mg/day for children to 11, now it is 100mg/day
Term
Restoration
Definition
Addition to restore nutrients lost in processing
Term
Fortification
Definition
Addition to make a good source of that nutrientl Ex. Vitamin C added to "High-C", vitamins and minerals added to breakfast cereals
Term
Enrichment
Definition
Addition of a specific nutrient by government mandate to alleviate a public health issue; Ex. salt-iodine added to prevent goiter; flour-niacin to prevent pellagra
Term
New Artificial Facts
Definition
Olestra/Olean: 0 calories, replaces cooking fats and oils in shortenings, frying oils, snacks, desserts
Simplesse (11/3 cal/g, replaces fats and oils in cold products like ice cream, yogurt, sour cream, salad dressing)
Term
Caprenin
Definition
Reduced calorie fat to 5/g, made from fatty acids and glycene, similar in taste and texture to regular fat
Term
Polydextrose
Definition
Water-soluable polymer of dextrose (1cal/g), body and texture in foods containing fat, starch, sugar
Term
Good Source
Definition
Serving contains 10-19% of daily value for nutrient
Term
Reduced
Definition
Nutritionally altered product that has 25% less of a nutrient or 25% fewer calories than reference food, cannot be used if reference food already has "low" claim
Term
Light
Definition
Altered product contains 1/3 fewer calories of 50% of fat in reference food, sodium content of a low-cal/fat food reduced by 50%, term describes texture and color
Term
Healthy
Definition
Low in fat/saturated fat and serving contains no more than 480 mg of sodium and 60 mg of cholesterol
Term
Fresh
Definition
Food is raw, has never been frozen or heated, contains no preservative, term accurately describes product (ex. freshly baked bread)
Term
4 Food Groups
Definition
1. Milk (2-3): calcium, riboflavin, protein, thiamine
2. Meat (2-3): protein, niacin, iron, thiamine; low in CA, 0 vitamin C
3. Veggies and Fruits (3-5, 2-4): vitamins A and C (fiber)
4. Other (sparingly): CHO, fat, ex. coffee, tea, condiments
Term
1906
Definition
Pure food and drugs act of 1906 and meat inspection act signed by President Theodore Roosevelt
Term
1938
Definition
Food, drug, and cosmetic act (FDCA)
Term
1958
Definition
Food additives amendment to FDCA (includes Delaney Clause)
Term
1990
Definition
Nutrition labeling and education act (NLEA)
Term
Food and Drug Administration (FDA)
Definition
All food other than meat, poultry, eggs, water supplies; imported food, food additives for all food
Term
US Department of Agriculture (USDA)
Definition
Food safety and inspection service for meat, poultry, eggs
Term
Federal Trade Commission (FTC)
Definition
Bureau of alcohol, tobacco, and firearms; advertising all food products; labeling advertising, and processing of alcoholic beverages
Term
Department of Commerce (DOC)
Definition
National marine fisheries service; information gathering and dissemination and technical assistance for seafood industry
Term
Environmental Protection Agency (EPA)
Definition
Approval registration, residue limits for pesticides; safety of public drinking water
Term
Major Food Hazard Priorities
Definition
FDA and consumers have different view, #1 for FDA is microbiological safety, #1 for consumers is chemical contaminants; nutrition in average persons mind is more important than FDA because it is based on illness and deaths
Term
Thermophiles
Definition
Grow at high temperatures (greater than 45C, 113F)
Term
Mesophiles
Definition
Grow at moderate temperatures (20-45C, 68-113F); most pathogens
Term
Psychrophiles
Definition
Grow well at low temperatures (less than 20C, 68F); refrigeration spoilage
Term
Foodborne Disease Outbreak
Definition
disease incident where 2 or more people experienced similar illness (gastrointestinal) after eating common food; food is the source of the illness
Term
Foodborne Disease Case
Definition
Each individual involved in an outbreak
Term
Enteric
Definition
Relation to the intestine
Term
Enteritis
Definition
Disease conditioning of the intestinal tract; intestinal lining attacked, ability for intestine to absorb water is interfered with; results in diarrhea
Term
Gastro-enteritis
Definition
Stomach/intestinal tract are attacked; results in vomiting/diarrhea
Term
Enterotoxin
Definition
Chemical substance produced by certain bacteria capable of attacking stomach/intestinal linings; results in gastro-enteric condition
Term
Neurotoxin
Definition
Chemical toxin absorbed via the gastro-intestinal tract, active against nerves; results in paralytic conditions
Term
Staphylococcus Aureus (Staph)
Definition
Widely distributed food poisoning disease of man and animals; often introduced by food handler; produce heat stable toxin at heat greater than 50F; best toxin production at 70-75F; antibiotic resistance; onset: 1-6 hours (up to 24)
Term
Staphylococcus Aureus (Staph): Symptoms, Occurence, Prevention
Definition
Sudden Nausea, vomiting, diarrhea, cramps; Occurence- food service, moist, starchy foods (baked goods, pastries, potato salads, sliced meats), rarely fatal; prevention: sanitation (personal and facilities), proper cooking temperature, refrigeration
Term
Perfringens Food Poisoning
Definition
Widespread, spore former (heat resistant), germinate and grow in intestine; onset- 8-24 hours (usually 12 hours)
Term
Perfringens Food Poisoning: Symptoms, Occurrence, Prevention
Definition
Acute abdominal pain, large amounts of gas and diarrhea; occurs in meat, eggs, gravies (high protein foods), steam tables at low temperatures; rarely fatal; prevention: proper heating kills cells, rapid cooling
Term
Botulism
Definition
Widespread food intoxication (neurotoxin); spore former (heat resistant), Anaerobe (without air- canned and vacuum packed foods); can't grow under 4.5pH, toxin- not heat stable; gas produced, sometimes by foul odor, causes floppy baby sundrome; onset: 1-3 days, up to 7
Term
Botulism: Symptoms, Occurrence, Prevention
Definition
First symptoms nausea and vomiting, drooping eyelids, weakness, double vision, impaired speech, chewing, swallowing, respiratory failure; 50% in early 1900s, since 1925, less than 10 from commercial canning and 700 from home canning; prevention- can foods properly (use pressure, high heat), avoid swollen/leaking cans/foods with abnormal odors, boil low acid canned foods for 10 minutes prior to eating
Term
Listeriosis
Definition
First outbreak of food poisoning in the entire world in Santa Ana with Halisco soft mexican cheese; infants, elderly, immune-compromised, 2-5 days, wash raw vegetables thoroughly
Term
Salmonella
Definition
Food infection in intestinal tract of man, animals, rodents, insects; holiday problems, must ingest living organism; onset- 12-24 hours
Term
Salmonella: Symptoms, Occurrence, Prevention
Definition
ab pain, headache, chills, diarrhea, occasional vomiting; from animal products (meats 70% of cases), eggs, milk, baked goods, dried foods (spices); in very young/old, rare; Prevention- sanitation, temperature hot-over 140 F, cold- under 40F
Term
E.Coli (0157:H7)
Definition
healthy cattle carrying bacteria, killed at 160F, transferred animal to man, can survive at refrigerator/freezer temperatures; onset-3-8 days post prandial, disease lasts 4-10 days
Term
E.Coli- Symptoms, Occurrence, Prevention
Definition
Undercooked hamburger/roast beef, raw milk, contaminated water, cider/melons (ground); in very young/old, rare; Prevention- proper sanitation (personal and facilities), refrigerate meat products ASAP, cook foods to internal temperature or 160F
Term
Pasturize
Definition
Heat for saftey; 161F for 15 seconds ultra high or 400F for .5 seconds; organism causing TB comes from milk
Term
Homogenization
Definition
normal fat cells (20 microns) are made smaller (5 microns), makes carton of milk the same throughout so fat is not just sitting at the top
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