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NFS212
Exam 2
180
Health Care
Undergraduate 3
10/25/2012

Additional Health Care Flashcards

 


 

Cards

Term
Invisible fat
Definition
Meat, poultry, dairy, eggs, nuts, and seeds
Term
Visible fat
Definition
Shortening, lard, salad and vegetable oils, margarine and butter
May become “invisible” to consumer when used in baked products or fried foods.
Term
Is butter water soluble?
Definition
NO
Term
Fats in Food Preparation
Definition
Flavor
Color
Texture
Tenderness
One phase of an emulsification
Heat transfer
Control of crystallization
Sensation of moistness in meat
Term
Melting Points of fats are..
Definition
High melting point and solid at room temperature
Term
Melting points of oils are ...
Definition
Lower melting point and solid at room temperature
Term
What three factors influence melting points
Definition
by type, form and length of fatty acids.
Term
What are the types of fatty acids
Definition
Saturated, monounsaturated, or polyunsaturated
Term
What does it mean when you refer to "form" of fatty acids
Definition
Trans vs. cis
Term
What does the length mean in terms of fatty acids?
Definition
Longer chain fatty acids have higher melting point
Term
Define: Smoke Point
Definition
Temperature at which smoke comes from surface of heated fat
Term
What does it mean to have different smoke points
Definition
High smoke point – good for frying
Low smoke point – NOT good choice for frying
Term
Describe "Plastic Fats"
Definition
may appear solid at room temperature
---Contain solid fat crystals and liquid oil
-These fats can be molded or pressed into shapes without breaking
--Plastic NOT brittle
--Example: Pressing shortening into a measuring cup
Term
What are advantages of hydrogenation
Definition
-Neutral flavor
-Higher smoke point
-Resist oxidation – less likely to become rancid
-Solid
--Shortening may be creamed with sugar or “cut” into flour
--Margarine may be spread on bread
Term
What are issues with hydrogenation
Definition
production of transfats
Term
What is Hydrogenation
Definition
Liquid oils turned into solid “plastic” fats
Term
Margarine- describe it!
Definition
-Water-in-fat emulsion
-Must have not less than 80 percent fat
-Several types are available
Term
What types of margarine are not recommended for baking
Definition
whipped and low fat
Term
Where are vegetables oils obtained from?
Definition
Fruits, seeds, and nuts
Term
How are oils removed?
Definition
Pressing
Use of solvents to increase extraction
Term
Winterized oils, describe them!
Definition
– also called salad oils
Remain liquid when refrigerated
Term
List kinds of oils
Definition
Soybean
Cottonseed
Olive
--Extra virgin, virgin, and pure
Canola
Sunflower

Safflower
Peanut
Corn
Tropical oils
--Palm, Palm kernel, Coconut
Term
What is butter?
Definition
is the fat of cream separated from other milk constituents by agitation
Term
What is lard?
Definition
Fat rendered from fatty tissues of hog
Term
What are the good qualities of lard? In what recipe is it traditionally used?
Definition
-good "shortening" qualities
-used in traditional refried beans
Term
Importance of temperature control while frying
Definition
Too high – too dark before done
Too low – too much fat absorption
Term
Fat absorption is influenced by:
Definition
Frying temperature, length of cooking, food characteristics, and frying fat condition
Term
Things to consider when selecting foods for frying
Definition
-Tolerant of high temperatures
-High smoke point
-Hydrogenated fats are more stable
-Nutrition considerations
Term
What are the possible purposes for fats that you must consider while buying?
Definition
-Deep fat frying
-Sautéing
-Baking
Term
What are some tips to cooking low fat?
Definition
Modify recipes to reduce fat

Choose lean meats

Use low fat cooking methods
Term
What are some fat-based replacers
Definition
-Olestra or Olean®
-Salatrim (Benefat)
-Emulsifiers
Term
what are some carbohydrate-based fat replacers
Definition
-Starches, cellulose, gums
-Maltodextrins
-Polydextrose
-Oatrim® and other high fiber ingredients
Term
What are some protein-based fat replacers
Definition
-Simplesse®
-Others
Term
What are emulsions? provide examples too@
Definition
-One liquid dispersed in another liquid with which it is usually immiscible

-Oil and water
-Vinaigrettes
-Mayonnaise
-Hollandaise sauce
Term
what are the four ways emulsions may be classified
Definition
-Oil-in-Water
-Water-in-Oil
-Temporary
-Permanent
Term
What are temporary emulsions
Definition
oil in water
Term
What are the basic ingredients of batters and doughs?
Definition
-Flour
-Leavening agents
-Fat
-Liquids
-Eggs
-Sugar and other sweeteners
Term
Where is most flour in the US made from?
Definition
Wheat
Term
What is milling?
Definition
separation of endosperm from bran and germ
Term
What are the grades of flour?
Definition
-Patent
-Straight grade
-Clear grade
Term
What is flour enriched with?
Definition
-Nutrients
-Iron
-Addition of vitamin D and calcium is optional
Term
What specific nutrients is flour enriched with?
Definition
B Vitamins
-thiamine
-riboflavin
-niacin
-folic acid
Term
What proteins are in flour?
Definition
Insoluble gliadin and glutenin
Term
What happens when the proteins in flour are moistened, then mixed and kneaded
Definition
they form gluten
Term
What is gluten responsible for?
Definition
Gluten is responsible for the viscous and elastic characteristics and high loaf volume of wheat flour doughs.
Term
What is gluten formation? what happens if it is over-mixed? what happens if theres too much water?
Definition
Hydrate a wheat flour mixture with water then mix to form gluten.
-Over-mixed dough – gluten strands may tear
-Too much water – interferes with gluten development
Term
What are the types of wheat flour?
Definition
-bread flour
-pastry
-cake
-self-rising
-gluten flour
Term
Rye Flour?
Definition
Less gluten forming properties as compared to wheat
Term
Cornmeal and corn flour? describe it?
Definition
Chief protein is zein
Need to combine with flour
Term
Soy Flour?
Definition
-High in protein, but not gluten
-Used with wheat flour for best baking
quality
Term
What does it mean "to leaven"
Definition
To Leaven – To make light and porous
Term
What are the major leavening gases in baking?
Definition
-air
-steam
-carbon dioxide
Term
How is air incorporated in doughs/baking
Definition
-Beating eggs
-Creaming fat and sugar
-Beating batter
-Folding or rolling dough
Term
How is carbon dioxide added?
Definition
-Action of yeast
-Chemical production (baking soda/powder)
Term
Describe baking soda
Definition
-sodium bicarbonate
-gives off carbon dioxed
-used in recipes with acid ingredient (buttermilk, vinegar, cream of tartar)
Term
What is the role of fat in flour mixtures?
Definition
It is meant to tenderize or shorten gluten strands
Term
What are the results of shortening gluten strands?
Definition
-emulsifiers allow the fat to be more fully dispersed throughout batter
-plasticity
-butter and margarine are only about 83%
-reduced-calorie margarine contain less fat
Term
What are the functions of eggs in baking and dough?
Definition
-Incorporate air into batter
-Yolks add flavor and color
-Form emulsions
-Increase rigidity upon being heated
----Egg proteins coagulate when heated
Term
What are the functions of sugar in baking and dough?
Definition
-Sweetening
-Tenderization
-Moisture retention
-Contributes to browning
-Aids in leavening
--Creaming of fat and sugar
--Stabilize egg white foams
--Provide food for yeast
Term
difference between batters and doughs?
Definition
Batters can pour or be dropped while doughts are thickened enough to be handled
Term
Yeast batters are called?
Definition
sponge
Term
At high altitudes the atmospheric pressure is less therefore
Definition
-Less resistance for leaving gases and greater expansion
-Moisture evaporates quickly
-Water and liquids boil at lower temperature (below 212°F)
Term
What is starch
Definition
in breads, cereals, grains, potatoes, and other foods – provides 70-80% of the world’s calories
Term
Sources of Starch include?
Definition
Seeds
Roots
Tubers
Term
Sources of starch in food?
Definition
-Cereal grains (i.e. corn, wheat, rice, oats)
-Legumes (i.e. dried beans)
-Roots and tubers (i.e. potato, tapioca, arrowroot)
Term
is starch a complex or simple carbohydrate
Definition
COMPLEX
Term
What are the two types of glucose molecules that make up starch?
Definition
Amylose and amylopectin
Term
Describe Amylose in starch?
Definition
-long, chainlike molecule
-gelling characteristics
Term
Describe Amylopectin
Definition
-branched, bushy structure
-thickening/cohesion properties
Term
Define: Gel
Definition
Colloidal dispersion that holds shape
Term
Define: Colloidal
Definition
Intermediate between small particles in solution and large particles in suspension
Term
What are some native starches?
Definition
Cornstarch
Tapioca
Wheat
Potato
Rice
Arrowroot
Sago
Term
Effects of dry heating on starch
Definition
Starch becomes more soluble
Reduced thickening ability
Term
What is dextrinization
Definition
Brown color, nutty, toasted flavor develops
Term
effects of moist heat on starch
Definition
-Starch granules insoluble in cold water
-Colloidal dispersion produced with heating
-Starch paste
Term
Gelatinization of starch
Definition
With heat, starch granules absorb water and swell
Increased viscosity and increased translucency
Term
Retrogradation of starch
Definition
Occurs with standing after gel formation
Amylose molecules associate more closely
Gel network shrinks
Syneresis
Term
Factors Affecting Starch Pastes
Definition
Temperature and time of heating

Agitation and stirring

Acidity

Addition of other ingredients
Term
How do temp and time of heating affect starch pastes
Definition
Temperature and time of heating
Thicker if cooked quickly
If undercooked
---Raw starch or pasty flavor
---Less smooth and silky
Term
how do agitation or stirring affect starch pastes
Definition
Stirring desirable to disperse starch
If excessive – starch granules rupture
--Slick and pasty mouthfeel
Term
How does acidicity affect starch pastes
Definition
May cause fragmentation and hydrolysis
Decrease of thickening power
Add acid late in cooking process
--i.e. lemon pie
Term
How does sugar affect starch pastes
Definition
Sugar
-Raises temperature of gelatinization
-May decrease viscosity
Term
How do Fats and proteins affect starch pastes
Definition
Delay hydration of starch
Lowers rate of viscosity development
Term
what starch sauce is thickened with an emulsion
Definition
hollandaise
Term
Typical starch choices in desserts
Definition
Corn starch
--Clear and glossy
Flour
Tapioca
Term
Starch-Thickened Desserts tips
Definition
Separate starch by mixing with sugar then cold liquid

Cook starch mixture before adding eggs
--Temper eggs before putting into mix
Term
What do eggs provide?
Definition
Structure Thicken
Color Emulsify
Leaven Bind
Coat Glaze
Clarify
Term
What are uses of eggs?
Definition
Emulsions (Lecithin in yolk)
Foam
Coagulation
Clarifying agent
Color
Flavor
Term
Describe the composition of whole eggs
Definition
75% water
12% protein
10% fat
1% carbohydrate
1% minerals
Term
describe the composition of egg whites
Definition
88% water
4g protein
0g fat
Trace minerals
Term
describe the composition of egg yoilk
Definition
49% water
3g protein
5g fat
Term
What protein is in egg whites?
Definition
Ovalabumin
Term
What protein is in egg yolks?
Definition
Lipoproteins
Term
What lipids are in eggs?
Definition
Triglycerides
Phospholipids
Cholesterol
Term
Describe the structure of egg shells?
Definition
Porous
--Allows exchange of gas and moisture
Shell color has no impact on flavor or nutrition
Protective coating
--Cuticle or Bloom
--Replaced with oil after washing
Term
What does the chalazae do for the egg?
Definition
its the thickened "rope=like" white that anchors yolk
Term
Do germinal discs differ between fertile and infertile eggs
Definition
NO
Term
Describe a fresh egg
Definition
-Stand high when broken onto a plate
-Yolk stands high and round
-Two “layers” of egg white evident
-Small air cells
-Yolks are slightly acidic
Term
Describe an older egg
Definition
-Spreads out when broken onto a plate
-Yolk does not stand high and round
-One “layer” of white that spreads out
-Large air cells
-Egg becomes more alkaline
Term
Egg flavor and odor are affected by?
Definition
-feed
-hen
-storage
Term
How does an egg's air cell provide an indication of its age?
Definition
large the air cell, the older the egg
Term
Why do eggs have excellent binding properties
Definition
their high protein content
Term
How are eggs used in emulsifying
Definition
Egg Yolk contains lecithin used to
thicken & stabilize emulsions
Term
How are egg substitutes different than regular eggs
Definition
-contain no or very little yolk
-contain a high concentration of egg white
-provide a low-cholesterol egg product
Term
Effects on temperature and time on eggs?
Definition
Keep Temperatures Low
Cooking Times Short
Coagulation Temperatures
Egg White 140ºF - 158ºF 60ºC – 70ºC
Egg Yolk 144ºF - 158ºF 62ºC – 70ºC
Beaten Eggs Coagulate at Slightly Higher Temperature ~ ---156ºF 69ºC
Term
How does heat coagulation of eggs work?
Definition
Denatures egg proteins
Proteins aggregate into a three dimensional gel network

Network stabilized by cross bonds
-Disulfide bonds
-Hydrogen bonds
Term
How does the coagulation of eggs by beating work?
Definition
Beating causes part of the proteins to become coagulated
Egg whites
-Become foamy, then form soft and stiff peaks
-Over beaten – then dry and flocculated
Whole eggs
--Will beat stiffer
Egg yolks
--Increase slightly in volume
Term
Effect of fat, salt, acid, or sugar to egg white foams ?
Definition
Fat ---interferes
Salt ---decrease volume and stability
Acid---increases stability and increases whipping time
Sugar---increases beating time and Increases stability
Term
Describe the structure and composition of bran?
Definition
15% of kernel
High fiber and mineral ash
Contains some fat
Term
Describe the structure and composition of endosperm
Definition
83% of kernel
High starch
Contains protein
Very low vitamin, mineral, and fat content
Term
Describe the structure and composition of Germ
Definition
2-3% of kernel
Rich in fat, protein, ash, and vitamins
Term
Are grains a complete protein source?
Definition
NO
Term
Refined flours and cereals are made from? and enriched with?
Definition
-endosperm
-b vitamins, iron, folic acid
Term
Whole grain consumption associated with reduced risk of
Definition
Cancer
Cardiovascular heart disease
Diabetes
Obesity
Term
Most common to least common cereal grains
Definition
Wheat
Rice
Corn
Barley
Millet
Sorghum
Oats
Rye
Term
Storage of grains?
Definition
Dry
6-12 Months- Must be free of bran & germ
Airtight Containers
Cool Dry Clean Environment

Also can be Refrigerated or Frozen
Term
Classes of wheat are based on
Definition
-winter or spring (when planted)
-Hard or soft
-Color
Term
hard wheats are???
Definition
higher in protein
Term
What are the different types of rice that can be grown?
Definition
Long grain
Medium grain
Short grain
Also specialty rice varieties
Jasmine, basmati, Arborio, waxy rice
Term
Processing of oats?
Definition
Most of outer hull removed
Most of germ and bran remain
Groats: Oats, Barley or Buckwheat that include the germ
Quick rolled oats
Old-fashioned rolled oats
Term
What are the different types of pasta
Definition
Whole Wheat---Higher in nutrients with increased texture
Flavored---Vegetable Purees, Herbs
Fanciful---Unusual Shapes
High-Protein ---Added Soy Wheat Germ
Couscous--- Moroccan Pasta
Term
What is starch
Definition
in breads, cereals, grains, potatoes, and other foods – provides 70-80% of the world’s calories
Term
Sources of Starch include?
Definition
Seeds
Roots
Tubers
Term
Sources of starch in food?
Definition
-Cereal grains (i.e. corn, wheat, rice, oats)
-Legumes (i.e. dried beans)
-Roots and tubers (i.e. potato, tapioca, arrowroot)
Term
is starch a complex or simple carbohydrate
Definition
COMPLEX
Term
What are the two types of glucose molecules that make up starch?
Definition
Amylose and amylopectin
Term
Describe Amylose in starch?
Definition
-long, chainlike molecule
-gelling characteristics
Term
Describe Amylopectin
Definition
-branched, bushy structure
-thickening/cohesion properties
Term
Define: Gel
Definition
Colloidal dispersion that holds shape
Term
Define: Colloidal
Definition
Intermediate between small particles in solution and large particles in suspension
Term
What are some native starches?
Definition
Cornstarch
Tapioca
Wheat
Potato
Rice
Arrowroot
Sago
Term
Effects of dry heating on starch
Definition
Starch becomes more soluble
Reduced thickening ability
Term
What is dextrinization
Definition
Brown color, nutty, toasted flavor develops
Term
effects of moist heat on starch
Definition
-Starch granules insoluble in cold water
-Colloidal dispersion produced with heating
-Starch paste
Term
Gelatinization of starch
Definition
With heat, starch granules absorb water and swell
Increased viscosity and increased translucency
Term
Retrogradation of starch
Definition
Occurs with standing after gel formation
Amylose molecules associate more closely
Gel network shrinks
Syneresis
Term
Factors Affecting Starch Pastes
Definition
Temperature and time of heating

Agitation and stirring

Acidity

Addition of other ingredients
Term
How do temp and time of heating affect starch pastes
Definition
Temperature and time of heating
Thicker if cooked quickly
If undercooked
---Raw starch or pasty flavor
---Less smooth and silky
Term
how do agitation or stirring affect starch pastes
Definition
Stirring desirable to disperse starch
If excessive – starch granules rupture
--Slick and pasty mouthfeel
Term
How does acidicity affect starch pastes
Definition
May cause fragmentation and hydrolysis
Decrease of thickening power
Add acid late in cooking process
--i.e. lemon pie
Term
How does sugar affect starch pastes
Definition
Sugar
-Raises temperature of gelatinization
-May decrease viscosity
Term
How do Fats and proteins affect starch pastes
Definition
Delay hydration of starch
Lowers rate of viscosity development
Term
what starch sauce is thickened with an emulsion
Definition
hollandaise
Term
Typical starch choices in desserts
Definition
Corn starch
--Clear and glossy
Flour
Tapioca
Term
Starch-Thickened Desserts tips
Definition
Separate starch by mixing with sugar then cold liquid

Cook starch mixture before adding eggs
--Temper eggs before putting into mix
Term
What do eggs provide?
Definition
Structure Thicken
Color Emulsify
Leaven Bind
Coat Glaze
Clarify
Term
What are uses of eggs?
Definition
Emulsions (Lecithin in yolk)
Foam
Coagulation
Clarifying agent
Color
Flavor
Term
Describe the composition of whole eggs
Definition
75% water
12% protein
10% fat
1% carbohydrate
1% minerals
Term
describe the composition of egg whites
Definition
88% water
4g protein
0g fat
Trace minerals
Term
describe the composition of egg yoilk
Definition
49% water
3g protein
5g fat
Term
What protein is in egg whites?
Definition
Ovalabumin
Term
What protein is in egg yolks?
Definition
Lipoproteins
Term
What lipids are in eggs?
Definition
Triglycerides
Phospholipids
Cholesterol
Term
Describe the structure of egg shells?
Definition
Porous
--Allows exchange of gas and moisture
Shell color has no impact on flavor or nutrition
Protective coating
--Cuticle or Bloom
--Replaced with oil after washing
Term
What does the chalazae do for the egg?
Definition
its the thickened "rope=like" white that anchors yolk
Term
Do germinal discs differ between fertile and infertile eggs
Definition
NO
Term
Describe a fresh egg
Definition
-Stand high when broken onto a plate
-Yolk stands high and round
-Two “layers” of egg white evident
-Small air cells
-Yolks are slightly acidic
Term
Describe an older egg
Definition
-Spreads out when broken onto a plate
-Yolk does not stand high and round
-One “layer” of white that spreads out
-Large air cells
-Egg becomes more alkaline
Term
Egg flavor and odor are affected by?
Definition
-feed
-hen
-storage
Term
How does an egg's air cell provide an indication of its age?
Definition
large the air cell, the older the egg
Term
Why do eggs have excellent binding properties
Definition
their high protein content
Term
How are eggs used in emulsifying
Definition
Egg Yolk contains lecithin used to
thicken & stabilize emulsions
Term
How are egg substitutes different than regular eggs
Definition
-contain no or very little yolk
-contain a high concentration of egg white
-provide a low-cholesterol egg product
Term
Effects on temperature and time on eggs?
Definition
Keep Temperatures Low
Cooking Times Short
Coagulation Temperatures
Egg White 140ºF - 158ºF 60ºC – 70ºC
Egg Yolk 144ºF - 158ºF 62ºC – 70ºC
Beaten Eggs Coagulate at Slightly Higher Temperature ~ ---156ºF 69ºC
Term
How does heat coagulation of eggs work?
Definition
Denatures egg proteins
Proteins aggregate into a three dimensional gel network

Network stabilized by cross bonds
-Disulfide bonds
-Hydrogen bonds
Term
How does the coagulation of eggs by beating work?
Definition
Beating causes part of the proteins to become coagulated
Egg whites
-Become foamy, then form soft and stiff peaks
-Over beaten – then dry and flocculated
Whole eggs
--Will beat stiffer
Egg yolks
--Increase slightly in volume
Term
Effect of fat, salt, acid, or sugar to egg white foams ?
Definition
Fat ---interferes
Salt ---decrease volume and stability
Acid---increases stability and increases whipping time
Sugar---increases beating time and Increases stability
Term
Describe the structure and composition of bran?
Definition
15% of kernel
High fiber and mineral ash
Contains some fat
Term
Describe the structure and composition of endosperm
Definition
83% of kernel
High starch
Contains protein
Very low vitamin, mineral, and fat content
Term
Describe the structure and composition of Germ
Definition
2-3% of kernel
Rich in fat, protein, ash, and vitamins
Term
Are grains a complete protein source?
Definition
NO
Term
Refined flours and cereals are made from? and enriched with?
Definition
-endosperm
-b vitamins, iron, folic acid
Term
Whole grain consumption associated with reduced risk of
Definition
Cancer
Cardiovascular heart disease
Diabetes
Obesity
Term
Most common to least common cereal grains
Definition
Wheat
Rice
Corn
Barley
Millet
Sorghum
Oats
Rye
Term
Storage of grains?
Definition
Dry
6-12 Months- Must be free of bran & germ
Airtight Containers
Cool Dry Clean Environment

Also can be Refrigerated or Frozen
Term
Classes of wheat are based on
Definition
-winter or spring (when planted)
-Hard or soft
-Color
Term
hard wheats are???
Definition
higher in protein
Term
What are the different types of rice that can be grown?
Definition
Long grain
Medium grain
Short grain
Also specialty rice varieties
Jasmine, basmati, Arborio, waxy rice
Term
Processing of oats?
Definition
Most of outer hull removed
Most of germ and bran remain
Groats: Oats, Barley or Buckwheat that include the germ
Quick rolled oats
Old-fashioned rolled oats
Term
What are the different types of pasta
Definition
Whole Wheat---Higher in nutrients with increased texture
Flavored---Vegetable Purees, Herbs
Fanciful---Unusual Shapes
High-Protein ---Added Soy Wheat Germ
Couscous--- Moroccan Pasta
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