Food Preservation Essay

Food Preservation
Introduction
Food Preservation is the ways to retain the food quality in a longer times. It is to prevent the food decomposition and fermentation. Besides that, food preservation not only to prevent the food getting spoilt in a long period of time but also preserved the colour, taste and the food nutritive value. Nowadays, food preservation has become more and more important component in the food industry as the consumers expect that able to purchase those foods that are out of season or imported from other countries. Furthermore, there are few reason why food preservation is important in our daily life such as preservation foods when they are in season it may added variety choices in our meals for example smoke meats and

Nowadays, refrigeration and freezing had become the most popular method for food preservation. It is a desirable way to preserve food because at low temperatures which around –10°C to –25°C, chemical reactions very slowly thus it will make the bacteria in food hard to survive.
Canning is a simple method for capturing food’s delicious and wholesome qualities at natures very best and for preserving food for enjoyment at a later time. Nowadays people choose for can because it may saving the available food for later use. One of the most common methods for preserving foods today is to enclose them in a sterile container. Canning can be glass, plastic and metal can and the basic principle of canning is that a food is sterilized, usually by heating, and then placed within an air-tight container. In the absence of air, no new pathogens can gain access to the sterilized food. In most canning operations, the food to be packaged is first prepared in some way—cleaned, peeled, sliced, chopped, or treated in some other way—and then placed directly into the container. The container is then placed in hot water or some other environment where its temperature is raised above the boiling point of water for some period of time. This heating process achieves two goals at once. First, it kills the vast majority of pathogens that may be present in the container. Second, it forces out most of the air above the food in the container.