Jan 16, 2016
Preparing Milk for Processing
Got MilkWhat is Milk? It is the normal secretion of the mammary glands of all mammals Its primary purpose is to nourish the young of the species
The CowPrincipal source of milk for human consumption in the United States
A great deal of variety among the milk of different animals exists which affects processing
The CowThe most important factor that determines the composition of milk is the breed of cow.
Preparation of Milk for ProcessingDairies are inspected by veterinarians, they are regulated by States and Cities.
Essential to protect public health concerns
Preparation of Milk for ProcessingCold temperatures and environmental conditions of cattle are important to milk quality.
Stainless steel is recommended for use in equipment because it does not react with milk to cause off-flavor
Preparation of Milk for ProcessingThe milking operation stimulates muscles in the udder of the cow causing let-down of milk into teat canals.
The machines work like vacuums and suck the milk into receiving vessels that lead to a holding tank
Holding TanksRefrigerated to cool the milk to less then 8 degrees C in order to control bacterial multiplication
Milk should not stay in the holding tanks for more than 2 days before transporting.
Tank TrucksMilk is shipped in sanitized milk cans by trucks from smaller dairies or by tank truck transportation from larger dairies. Drivers inspect the milk to see if it is cold and has a good aroma. They also take a sample for further processing
Inspection StandardsSamples are analyzed for fat and solid contents and microbiological data.
Tests are conducted to determine bacterial count, determination of sediment, and evaluation of milk flavor.
Grade A Pasteurized Milk Ordinance1978 Recommendations of the U.S. Public Health Services/ Food and Drug Administration is used as a guide to the setting of standards of milk quality
Milk FlavorCan acquire off-flavorCows eating unusual feed and or by absorption of odors and chemicals.Poor milk handling equipmentCopper causes oxidized flavors that are metallic, oily and fishy.
Health Consideration of Dairy ProductsMilk and other dairy products are a significant amount of nutrients for humans.
Milk is a good source of protein, calcium, and riboflavin.
3 Cs of MilkAlways Keep Milk..
Health Consideration of Dairy ProductsCows milk unlike human milk must be modified to meet nutrient requirements of infants.Milk is low in iron which babies need in order to prevent anemia.Milk can help to prevent osteoporosis, acne problems, poor eyesight, and fragile teeth.
Trends in ConsumptionSince 1975 the available milk supply has increased.Campaign slogans..Got Milk?Milk does a Body Good!Three A Day (Milk, Yogurt, Cheese)
ReviewWhat is the most important factor that determines the composition of milk?Why do we want to keep milk in stainless steel containers?How long should milk stay in holding tanks?What can milk help prevent?