Dairy Cows
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3 fermented and frozen products
Cheese Butter Yogurt
What is coagulating cheese?
Adding rennant/bacteria from abomasum of veal calves
Steps of cheese production
Coagulate milk Separate milk solids and liquids Grind and salt solids Mold and press solids Package airtight Age/ripen
Types of goat cheese
Romano provolone blue
Types of sheep cheeses
Feta Manchego Roquefort
Fat content: butter
80%
How is butter made?
Separate fat from buttermilk
What bacteria is used to make yogurt?
Streptococcus lactus bacteria
3 frozen products
Frozen yogurt Ice milk 3-7% fat Ice cream 9-30% fat
5 milk cow breeds
Ayrshire Brown Swiss Guernsey Holstein Jersey
What is the most popular milk breed in America and why?
Holsteins They produce the most volume of milk with the highest fat content
What 3 factors determine how milk producers are paid?
Pounds of milk Fat content Protein content
Agriculture Cooperative
Legalized monopoly
Purpose of agriculture cooperative
Regulate supply and demand Keep milk prices up
Milk grades are a quality measure of what 2 things?
Sanitation of facility Animal health
Milk grading is determined by what 2 things?
Somatic cell count Bacteria in milk
What is the somatic cell count?
Measure white blood cells and some epithelial cells in milk. Indicates animal health and infection
2 milk grades
Grade A (90%) : Use for anything. Can be sold as liquid milk. Grade B (10%): Must be processed. Less valuable
70% of milk is used for what?
Processed products. Other 30% is sold as liquid milk
Milk processing 2 steps
Pasteurization Homogenization
What is pasteurization.
Flash heating milk at 161°F for 30 seconds to destroy pathogens (Bacteria, viruses, and Protozoa)
What is homogenization?
Breaking fat into microscopic partials
What is an atomizer?
Prevents homogenized milk from separating.
What are the 6 components in milk
Water Lactose- carbohydrates Fat Minerals- calcium and phosphorus Protein- Albumin and casein