Dairy Flashcards

1
Q

Milk is the lacteal secretion practically free from colostrum, obtained by the complete milking of one or more healthy cows. Milk that is in the final package form for beverage use shall have been pasteurized or ultrapasteurized, and shall contain not less than ______ milk solids not fat and no less than _____ milk fat.

Milk may have been adjusted by separating part of the milk fat therefrom, or by adding cream, concentrated milk, dry whole milk, skim milk, concentrated skim milk or nonfat dry milk. May be homogenized.

A

8.25%
3.25%

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2
Q

___ and ____ can be called milk now

A

oat and soy

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3
Q

Cholesterol
- Average ____ mg in a cup of whole milk,
- ____ mg in 2% milk,
- ___ mg in nonfat milk

A

33 mg
18 mg
4 mg

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4
Q

Vitamins in milk include

A

– Vitamin A and D, Riboflavin

– Tryptophan is amino acid important in niacin formation
(Vitamin B)

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5
Q

Minerals in milk

A

– Major is Calcium

– Others include Phosphorus, Potassium, Magnesium,
Sodium, Chloride, and Sulfur

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6
Q

why is milk packaged in cardboard or opaque plastic containers?

A

riboflavin can deteriorate quickly

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7
Q

why are vitamins D and A added to milk

A

Vit D isnt in many foods
Vit A is usually lost in heating process

Helps with absorption of calcium

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8
Q

Class I is used for __________________

A

fluid milk products such as drinking milk or
eggnog

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9
Q

Class II goes into _______________

A

“soft” manufactured products such as
cottage cheese or yogurt

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10
Q

Class III is used for making __________

A

hard cheeses such as cream
cheese

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11
Q

Class IV is used to ___________

A

make butter and dry products such as evaporated or condensed milks, butter, or dried milk

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12
Q

milk is graded according to its _______

A

bacterial count
- somatic cell count (SCC)

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13
Q

what are the grades of milk?
Is it voluntary ?

A

Grade A - lowest bacterial count (90% of milk in US)
Grade B

yes

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14
Q

Factors necessary to produce quality milk are called ______.
These include _________.

A

Good Agricultural Practices (GAPs)

  • animal health
  • milking hygiene
  • nutrition (feed and water)
  • animal welfare
  • environment
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15
Q

all raw milk must be processed within ____ of receipt at the plant.
after pasteurization, some harmless bacteria may survive the Heating process, these will cause the milk to ______

A

72 hrs

go sour

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16
Q

what type of pasteurization doesn’t require refrigeration after until it is opened?

how is it pasteurized?

A

Ultrahigh-temp (UHT) milk

280-302 degrees F for 2-6 seconds

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17
Q

raw milk is a good medium for microorganism growth and may cause tuberculosis, undulant fever, scarlet fever, septic sore throat, typhoid fever, gastroenteritis, and diphtheria. Raw milk is an average of ____ fat content

A

4%

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18
Q

types of fluid milk

A

whole milk
reduced fat
low fat
fat free

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19
Q

concentrated and dried dairy products are obtained through partial water removal and dried have even more amount of water removed. Normal fluid milk contains _____ water

A

88% water

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20
Q

benefits of concentrated and dried diary products

A

increased shelf life
convenience
product flexibility
decreased transportation costs
easier storage
can be used for in home fortification of foods

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21
Q

imitation milk definition

A

Has the appearance, taste, and
function of original milk

Nutritionally inferior with little to
no dairy content

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22
Q

cultures milk products are a result from the _____ of ______ or _______ milk by addition of a culture of _______ bacteria

A

souring
skimmed
partially skimmed
lactic acid

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23
Q

examples of cultured milk

A

buttermilk
yogurt
acidophilus milk
kefir
sour cream

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24
Q

yogurt is a semisolid fermented dairy product. Advantages include…?

A

increase shelf life
improve digestibility
changes flavor

25
Q

Starter cultures in U.S. are mostly a blend of bacteria
– Microorganisms are responsible for the development of typical yogurt flavor and texture

Once desired product achieved, fermentation is discontinued by either __________

A

heating or chilling

– Chilling preserves “live active
cultures”

26
Q

difference between regular yogurt and greek yogurt

A

greek has less water and 15 g protein

normal has 5 g protein

27
Q

kefir is a _______ of _______
it is similar in taste and texture of _______

Kefir grain has both __________ which feed from the milk they are added to

Sometimes referred to as the __________ due to its bubbly, fizzy nature

A

slightly sour brew of fermented milk
yogurt

bacteria and yeasts

“champagne of milk”

28
Q

flavor of milk comes from ____________________

other factors that can contribute include ?

A

lactose, salt, sulfur compounds, SCFA

heat, sun, oxidation, copper equipment, animal feed

29
Q

calcium needed for 19-50 years old ?
above 51 ?

A

1000 mg

women - 1200 mg
men - 1000 mg

30
Q

what is curdling

A

coagulation/precipitation of milk proteins

31
Q

curdling is cause by exposure to ?

A

heat
acid
polyphonic compounds
salts
enzymes (rennin)

32
Q

cream milk products vary from ____ to ____ fat content

A

18% - 36%

33
Q

light or coffee cream has __________
light whipping cream has ____________
heavy whipping cream _________

half and half _______ (why is it not truly a cream)

A

18-30%
30-36%
>36 %

10.5-18%
combination of cream and milk

34
Q

Liquid milk products can be made into _____ by whipping air into the
liquid
* Cream, evaporated milk, reconstituted
nonfat dry milk

A

foam

35
Q

Whipping causes______ to ______ into ________ , which traps bubbles, fat and liquid

A

Proteins
stretch
thin layers

36
Q

____ increases the stability of milk foams.
how do u add it?

A

sugar

add gradually toward the end (powdered sugar is best)

37
Q

whipping time until peaks are ____, yet _____

A

stuff and moist

there’s soft peaks
stiff peaks
dry peaks

38
Q

refrigerate all fluid milk except

A

unopened, aseptic packs of UHT pasteurized milk
evaporated or condensed canned milk

39
Q

for storing unopened milk products in fridge….

milk?

Yogurt?

Buttermilk?

Sour cream ?

A

no more than 3 weeks
best within 7-14 days
within 14 days
unopened up to 2 weeks

40
Q

common ways of classifying cheeses

A

processing method
milk source
moisture content

41
Q

cheese can be defined by

A

microbial characteristics
appearance
mode of packaging
place of origin

42
Q

fresh cheese contains moisture content of ________ and are ______

A

40-80%

not aged

43
Q

soft cheese has moisture content of _________ and are prepared by ______

A

50-75%

aging for a short time
softer cheeses=shorter aging

44
Q

semi-hard cheese

moisture?
Aged?
Examples?

A

moisture 30-45%
aged 1-6 months
asiago, Colby, provolone

45
Q

hard cheese

moisture?
Aged?
Examples?

A

moisture 35-40%
aged 6-36 months
cheddar, swiss

46
Q

Extra or very hard cheese

moisture?
Aged?
Examples?

A

moisture around 30%
aged at least 12 months
romano, parmesan

47
Q

Cheese Production: Coagulation

Once milk is selected, coagulation of the _______ in milk is completed
– Method used to coagulate milk defines many characteristics of the resulting cheese

A

casein protein

48
Q

Two main methods to coagulate:

A

– Addition of Enzymes
– Addition of Acid

49
Q

after coagulation the solid part is _______ and the liquid is _____

A

curd
whey

50
Q

Graded cheeses are evaluated based on:

A
  • Variety
  • Flavor
  • Texture
  • Finish
  • Color
  • Appearance
51
Q

exception to cheeses for the grading scale

A

Colby cheese, in which color is not considered

Swiss cheese, which is graded additionally for its salt level and eyes
(holes)

52
Q

pleasing flavor
smooth compact texture but may have a few openings or curdy appearance
uniform color with possible white lines

A

Grade A

53
Q

may possess somewhat objectionable flavors and colors
texture may be loose
color may be slightly bleached on the surface

A

Grade C

54
Q

Fairly pleasing flavor, but may contain undesirable flavors to a limited degree.
Texture may have several defects
color may posses several undesirable characteristics

A

Grade B

55
Q

dine highly pleasing cheddar flavor
smooth compact texture
uniform color

A

Grade AA

56
Q

cheese is most often used as an ingredient to add

A

flavor
color
texture

57
Q

Two most important principles when preparing
foods with cheese:

A
  • Keep temperatures low and heating time short
  • Select the best cheese
58
Q

Chemical composition of a cheese determines its functional properties
and dictates how it can be used in food preparation

  • Some of these functional properties include:
A
  • Shreadability
  • Meltability
  • Browning
  • Stretchability
59
Q

Cheese must be stored properly to prevent deterioration
* Most cheeses should be ____________
* Some _________ products can be stored in a cool, preferably dark, cupboard until ready for use

A

refrigerated
processed cheese