Please give example if possible. Food processing can be defined as the preparation of food to preserve it or to make it ready for cooking or eating without cooking.
Food is preserved by controlling anything that can spoil it.
Food spoilage can be prevented by high or low temperature, by reducing the water contained in food, and by the use of various acids and chemicals, or by ionising radiation. Some basic foods are processed to become entirely new food products. Most of the foods we eat have been processed. The various kinds of food additives are intended to improve quality of food such as its colour, flavour, nutritional value, or storage life. There is widespread concern over the use of additives in food.