Dairy Products Flashcards
What is def of milk
Lacteral secretion practically freee of colostrum, obtained by the complete milking of one or more healthy animals
____ % of milk fat
_____% of milk solids
- 25
8. 25
Composition of milk
87.3% water
4.9% lactose
3.7% fat
3.4% protein
.7% ash
What is least variable component in milk
Lactose
What is leftover from combustion
Ash
What is the primary mineral in milk
Calcium
What is the disaccharide lactose made out of
Glucose and galactose
What is lactose digested by
LactAse
What are other components of milk dissolved or suspended in
Water
Small amount of ___________ are __________ to lactose or bound to protein
Water , hydrated
Least variable component in healthy animals
Lactose
What is the only trace of carbohydrates in milk
Lactose
What is the most variable component in milk
Fat
What is 90% of fat
Triglycerides
What is the 2% of fat made up of
Mixture of mono di glycerides phospholipids
Sterols vitamins
Cartenoids
What is a bland flavor when fresh
Fat
What is 80% of milk proteins
Carson
What is Casejn isoelcteic point
4.6
What makes up whey proteins
Beta lactoglobulin
Alpha lactalbumin
Serum albumin
Immunoglobulins
What are 3 proteins
Casein (curds)
Whey
Enzymes
What indicates abnormal condjtuons in animals when it changed
Ash
What is acidity ph
6.6
What do we call rancid flavor in milk when fat becomes oxidized
Hydrolacticity
Idaho is what in milk production and what in milk per cow
3rd a
1st
What is us main dairy product
Cheese
What is coagulates using acid and enzyme (rennet and chymosin)
Cheese
What is the formation of curds and whey
Cheese
What is common 1st step in producing skin milk
Separation
What causes rancidty
Lipase
What is heat treatment
Pasteurization
What is the primary purpose of pasteurization
Destroy pathogens
What are 2 secondary purposes if pasteurization
Destroy
Spoilage organizms
Endogenous enzymes
What is vat pasteurization
145
30 min
Ice cream
What is most common pasteurization schedule
High temp short time
161
15 secs
What are 2 hhst
- 1 sec
212. .01
What is the most heat resistant pathogen in milk
Coxiella burnetti
Ultra pasteurization
Shelf stable product
280
2 sec
Homogenization is
Makes milk uniform by breaking down fat globules
What can course reglobulatikn
Immuoglobins
What is homogenization for
Destroy immuglobins
And native lipase