Analyse the Various Methods used for the Preservation of Food

We often store forage so that we can fling it later. However if victuals is unbroken for a long flitter before it is eaten, it whitethorn pop take away to go off. This may be beca character it is attacked by its own enzymes, oxidized by the vent or decomposed by bacteria and fungi. Therefore food economy is very important. There argon three main systems of preserving food. These are pasteurisation and sterilisation, infrigidation and freeze and drying. Heating foods and drinks that are close in tins or cartons, kills off organisms like bacteria. This parade is called sterilization or pasteurization. For example, take out is passion to 72 ºC for 15 seconds and past cooled rapidly. However this does not sterilize the milk. Sterilization occurs when milk is heated under pull to 132]C for one second and certain in cartons or formative bottles. The second method is refrigeration and freezing, that is, modify the food or drink by placing it in the refrigerator. This answer s first-class honours degrees down the legal action of any enzymes present in the food and it also simoleons the yield and reproduction of bacteria in the food. The third method is drying, that is, the preservation of food by removing the water in them. This process stops the enzymes from working and prevents the growth of bacteria and fungi. The food is usually dried under low sort pressure.

This makes the water evaporates without peak the the temperature at which the food would burst out to cook. The preserve food is whence sealed in packets and kept at room temperature until it is reconstituted by adding water. For example, milk is dried, to produce milk powder. Then, by adding water makes them alert to drink. There are many separate methods use for preserving food, for example, canning, salting, syrup, pickling and irradiation. If you want to approach a full essay, golf club it on our website: Ordercustompaper.com

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