DOMAIN I. Principles of Dietetics Flashcards
CLIMACTERIC FRUITS
Ripen after harvesting
Ex: peach, pear, banana, apple, tomato
WAYS TO PREVENT ENZYMATIC BROWNING
- Dip in citrus juice
- Add sugar before freezing
- Heat to boil
HOW MANY ORANGES MAKE A QUART OF JUICE
12 ORANGES
CHLOROPHYLL
- Insoluble in water
- In ACID: olive green, called PHEOPHYTIN
- In ALKALINE: bright green, CHLOROPHYLLIN
YELLOW, ORANGE PIGMENTS (carotenoids)
- Insoluble in water
- No change in color in acid/base
LYCOPENE
- Gives tomatoes and watermelon their red color
- Antioxidant, phytochemical
RED, BLUE, PURPLE FLAVONOIDS
- Called anthocyanins
- Water soluble
- PH changes affect them greatly
- In acid: BRIGHT RED
- In alkaline: BLUISH
COLORLESS, WHITE, OR YELLOW FLAVONOIDS
- Called anthoxanthins OR flavones
- water soluble
- In acid: COLORLESS
- In alkaline: YELLOW
ONIONS will turn YELLOW in an aluminum pan.
PREPARATION SUGGESTIONS FOR CAULIFLOWER
Cook for a short time, COVERED
PREPARATION OF BROCCOLI IN MICROWAVE
- The same flavor for less time
- Better retention of color and vit C
PREPARATION SUGGESTIONS FOR CABBAGE
- Cook for SHORT time with the lid OFF initially
- In large amount of water
PREPARATION OF POTATOES
- Contain phenolic compounds, causing color change in peeled potatoes
- Green color under skin- when exposed to sunlight during storage
- SOLANINE- a natural toxicant
- During storage starch changes to sugar
- OLD POTATOES: sweeter, cook to a darker brown, softer in texture
Change in TASTE, COLOR, AND TEXTURE
TVP (TEXTURED VEGETABLE PROTEIN)
- Textured soy protein
- Used as a meat analog/meat extender
- Quick to cook, yields more servings, lower meal cost
- Adds juiciness d/t water content
PREPARATION OF ACIDIC VEGETABLES
More time, more water, no LID
FROZEN vs FRESH VEGETABLES COOKING TIME
- Frozen cook faster d/t blanching before freezing
HOW MANY CUPS IN A #10 CAN? # IN A CASE?
13 CUPS
6 in a CASE
SAFE INTERNAL TEMPERATURE OF PORK, BEEF, VEAL, LAMB, STEAKS, ROAST, FISH
145’ F
SAFE INTERNAL TEMPERATURE OF GROUND BEEF, GROUND VEAL, GROUND LAMB
160’ F
SAFE INTERNAL TEMPERATURE OF TURKEY, CHICKEN, DUCK
165’ F
ROASTING TEMPERATURE
325’ F
PINK COLOR IN CURED MEATS IS DUE TO
NITRITES
TENDER CUTS OF MEAT
NEAR BACKBONE - LOIN, SIRLOIN
COOKING METHODS:
DRY HEAT: FRYING, BROILING, GRILLING,
TOUGH CUTS OF MEAT
BOTTOM ROUND, CHUCK, BRISKET
COOKING METHODS: MOIST HEAT
BRAISING, SIMMERING, STEAMING, STEWING
PAPAIN AND BROMELAIN TENDERIZE MEAT
FAT SMOKE POINT IN DECREASING ORDER
SAFFLOWER 513’ F
soybean, canola, corn, palm, peanut, sunflower, sesame, olive- 375’ F
Lard 375’ F
Shortening: 365-370’ F (monoglycerides, low smoke point)
Butter: 350’ F
SURIMI
Purified, frozen minced fish with preservatives, egg white/ starch used in analogs-crab meat
GOOD QUALITY INDICATOR FOR EGGS
HIGH PROPORTION OF THICK WHITE
EGG YOLK
OIL IN WATER EMULSION
MORE PROTEIN THAN EGG WHITE- 17.5 %
11% IN EGG WHITE
COLOR DEPENDS ON THE COLOR AND TYPE OF HEN’S FEED
EGG NUTRITION VALUE
80 CALORIES
6 g PROTEIN
5 g FAT
Vitamins A, D and B2 (riboflavin)
GRADING OF EGGS
CANDLING:
INFRONT OF A BRIGHT LIGHT TO EVALUATE WHITE
THICKNESS, LOCATION AND CONDITION OF THE YOLK
EGGS GRADES
AA
A
B
HOW LONG AN EGG COULD BE STORED IN COLD STORAGE
6 MONTHS (29-32’ F)
FRESH EGG:
Has a dull, rough shell and sinks to the bottom of a pan with cold water
SYNERESIS
WEEPING
Occurs when:
- cooking temperature is too high
- cooking temperature is too low and the protein is cooked for a long time
- results in a tough, watery product
EGG PROTEIN COAGULATES AT 62-70’ C
QUALITY OF CUSTARDS
% SAG HAS TO BE LARGER FOR A GOOD QUALITY
WHEY COMPOSITION
LACTOSE, LACTALBUMIN, LACTOGLOBULIN, WATER SOLUBLE VITAMINS, MINERALS
MILK PASTEURIZATION TIME AND TEMPERATURE
145’ F for 30 MINUTES
160’ F for 15 SECONDS
FAT CONTENT OF MILK
2% Milk - 1.5-2.25%
Low Fat - .5-2%
Skim - < .5 %
EVAPORATED MILK
- 60 % WATER REMOVED
- BROWN COLOR D/T CARAMELIZATION OF LACTOSE IN CANNING
- NO LESS THAN 7.9% milk fat
SWEETENED CONDENSED MILK
- CONCENTRATE WHOLE MILK
- 15-18 % SUCROSE/GLUCOSE
WHEN USING BUTTERMILK INSTEAD OF MILK
INCREASE THE BAKING SODA
FILLED MILK
SKIM MILK AND VEGETABLE FAT
FILLED MILK
SKIM MILK AND VEGETABLE FAT
FAT CONTENT IN BUTTER/MARGARINE
80 %
FAT CONTENT IN HEAVY CREAM
> 36%
FAT CONTENT IN WHIPPED CREAM
35%
FAT CONTENT IN SOUR CREAM
> 18%
FAT CONTENT IN HALF & HALF
NO LESS THAN 10.5 %
NAME THE CHEESE WITH THE HIGHEST MOISTURE CONTENT
COTTAGE CHEESE
MOISTURE CONTENT OF MOZZARELLA
45-55
NAME CHEESE WITH LOWEST MOISTURE CONTENT
SWISS, CHEDDAR, GORGONZOLA, PARMESAN
TO PREVENT STRINGY, CURDLED-LOOKING CHEESE PRODUCTS..
COOK AT MODERATE TEMPERATURE FOR SHORT TIME
NAME WEAK FLOURS
PASTRY AND CAKE
NAME WEAK FLOURS
PASTRY AND CAKE
GLUTEN CONTENT IN FLOUR
IN DECREASING ORDER:
GRAHAM, WHEAT
BREAD FLOUR - 11.8%
ALL-PURPOSE - LESS GLUTEN, BLEND OF SOFT AND WEAK FLOUR - 10.5 %
NOODLES CONTAIN..
EGG YOLK/SOLIDS
HOW TO MODIFY A RECIPE IF BRAN IS ADDED
BRAN DECREASES THE VOLUME OF THE END PRODUCT
TO COMPENSATE: INCREASE FLOUR AND LIQUID
OLD BAKING POWDER
CAUSES LOSS OF THIAMIN IN BAKED GOODS
PROPORTION OF BAKING POWDER TO FLOUR
FOR EVERY CUP ADD 1 1/2 TSP BAKING POWDER
EFFECT OF USING TOO MUCH SUGAR IN A PRODUCT
COARSE CELLS, THICK WALLS, SHINY CRUST, CRUMBLY PRODUCT
NAME QUICK BREADS AND THEIR CONTENT
MUFFINS, BISCUITS, POPOVERS
EGG AND FLOUR
NAME QUICK BREADS
MUFFINS, BISCUITS, POPOVERS
MUFFIN MIXING METHOD
- SIFT DRY IINGREDIENTS, STIR THEM ALL TOGETHER
- MIX WET INGREDIENTS IN A SEPARATE BOWL
- COMBINE LIQUID WITH DRY INGRADIENTS
- DO NOT OVERMIX
MUFFIN MIXING METHOD
- SIFT DRY IINGREDIENTS, STIR THEM ALL TOGETHER
- MIX WET INGREDIENTS IN A SEPARATE BOWL
- COMBINE LIQUID WITH DRY INGRADIENTS
- DO NOT OVERMIX
A REASON FOR TOUGH AND HEAVY PRODUCT WITH TUNNELS FROM TOP TO BOTTOM
OVERMIXING- LOSS OF CO2
A GOOD MUFFIN WILL HAVE
ROUND PEBBLED TOP, SYMMETRICAL SHAPE, NO TUNNELS
CAKE MIXING METHOD
- CREAM FAT WITH SUGAR
- ADD EGG
- ADD SIFTED DRY INGREDIENTS IN PORTIONS, ALTERNATING WITH PORTIONS OF MILK
WHAT WILL MAKE A CAKE YELLOW
WHOLE EGG
WHAT WILL MAKE A CAKE WHITE
EGG WHITES
WHAT WILL MAKE A CAKE GOLD
EGG YOLKS