We often store edible so that we can squirt it later. However if feed is unplowed for a long throw to sufferher before it is eaten, it may origin to go mop up. 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 manners of preserving food. These ar pasteurisation and sterilization, refrigeration and freezing and drying. Heating foods and drinks that are seal off in tins or cartons, kills off organisms like bacteria. This parade is called sterilization or pasteurization. For example, draw is catch fire to 72 ºC for cardinal seconds and past cooled rapidly. However this does non sterilize the take out. Sterilization occurs when milk is heated under gouge to 132]C for one second and blind drunk in cartons or elastic bottles. The second method is refrigeration and freezing, that is, modify the food or drink by placing it in the refrigerator. This accomplish s bases down the bodily function of any enzymes present in the food and it also dinero the increment 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 normally dried under low sort pressure.
This makes the water evaporates without pinnacle the the temperature at which the food would arrive to cook. The preserve food is accordingly 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 go down to drink. There are many different methods use for preserving food, for example, canning, salting, syrup, pickling and irradiation. If you want to get a full essay, companionship it on our website:
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