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Dairy Dairy

Dairy - PowerPoint Presentation

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Uploaded On 2016-06-14

Dairy - PPT Presentation

Products Origin Dairy products are from Animals Dairy foods originate mainly from cows milk although milk from goats and sheep can be used Classification Milk basis for all dairy products ID: 361289

dairy milk products cream milk dairy cream products protein sour globules fat life shelf pasteurised stored foods

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Slide1

Dairy

ProductsSlide2

Origin

Dairy products are from Animals.

Dairy

foods originate mainly from cows milk although milk from goats and sheep

can be used.Slide3

Classification

Milk- basis for all dairy products

Cream – by-product of milk production; produced by separating the fat globules from whole milk.

Sour cream – left to become sour or soured with bacterium.

Yoghurt – cultures are added to milk which convert the sugar to lactic acid, which coagulates the protein and creates the thick consistency.

Cheese – Made from curds of milk (concentrated form of milk, only 1 L makes 100 g)Slide4

Quality considerations when storing milk

Milk should be stored in the refrigerator at 4C. The milk should remain in its plastic container or carton to prevent it absorbing

odors

and

flavours

when stored near other foods.Slide5

Nutrient Composition of Milk

Protein

Fats (saturated)

Carbohydrate- lactose

Most of the key vitamins

Mineral – Calcium

Water – 87%Slide6

Homogenisation

A

way to extend shelf life of milk

Breaking down the globules of fat into minute particles so the cream does not rise to the surface of the milk.

The milk is forced through a very fine nozzle at a high pressure.

Milk must be

pasteurised

before or simultaneously.Slide7

Pasteurisation

A way of extending the shelf life of milk

Destroys all pathogenic, or disease causing bacteria.

Method: heat milk to 72C for 15sec and then cool it rapidly to 4C.

All milk in Australia must be

pasteurised

before selling it commercially.Slide8
Slide9