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Milk

QuestionAnswer
Types of milk? Whole milk, Low fat milk, Skimmed milk, Buttermilk
What is milk an excellent source of? HBV protein, calcium, high water content
What nutrient does it lack? Dietary fibre, Iron
Milk is processed by? Homogenisation, Pasteurisation, Sterilisation, Ultra-Heat Treatment, Condensed milk, Evaporated milk, Dried Milk
What is the process of Homogenisation? Milk heated to 60* then forced under pressure through a machine with tiny holes that break up the large fat globules & disperse them evenly
Effects of Homogenisation? Improves texture/ flavour of milk
What is the process of Pasteurisation? Milk heated to 72* for 25 secs and cooled to 10*
Effects of Pasteurisation? pathogenic bacteria are destroyed, shelf life extended, loss vitamin b&c
What is the process of Sterilisation? Milk is homogenised, it is then sealed into glass bottles and heated to 110* for 30 secs
Effects of sterilisation? Pathogenic bacteria destroyed, Shelf life extended, loss vitamin b&c, flavour slightly changed
What is the process of ultra heated treatment? heated to 132*C for 1/2 secs and cooled to 10*C, then packaged
Effects of ultra heat treatment? Pathogenic bacteria destroyed, shelf life extended, loss vitamin b&c, flavour changes
What is the process of condensed milk? Homogenised, pasteurised and 15% sugar added, then evaporates to 1/3 of volumn, cooled and sealed
Effects of condensed milk? Pathogenic bacteria destroyed, shelf life extended, loss vitamin b&c, flavour changes, incerased kilocalorie
What is the process of evaporated milk? pasteurised, evaporated to 1/2 its volumn, then homogenised sealed into cans and sterilised @ 115*C for 20 mins
Effects of evaporated milk? Pathogenic bacteria destroyed, shelf life extended, loss vitamin b&c, flavour changes
What is the process of dried milk? Can be roller dried or spray dried
What is roller dried? poured onto heated rotating metal rollers that dry the liquid milk to a powder
What is spray dried? milk sprayed into hot air chamber that instantly evaporates the water in the milk forming powder
Effects of roller dried? Roller dried milk does not reconstitute easily when stirred with water
Effects of spray dried? spray dried milk reconstitutes easily when stirred with water
Where should you buy milk? from a retailer with a strict food hygiene and safety policy
What should you check before buying? Use by date
Should you buy milk in large amounts? NO
Where should you store milk? In fridge at 4*C
What should you keep milk away from? Strong smelling foods
When does spoilage of milk occur? When the naturally present lactic acid bacteria breaks down the lactose in milk, forming lactic acid,
What are culinary uses of milk? Drinks, Baking, Pudding, Desserts, Sauces, Batter, Soups
What should you avoid when cooking milk? Overcooking, may curdle
What happens when you heat milk? Protein coagulates, Vitamin B lost, bacteria destroyed, flavour changes
Who controls milk in Ireland? The Department of Agriculture, Food and the Marine
Created by: SarahBonner
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