ABSTRACT
Food products, such as sh, meat, fruits and vegetables, and oils and fats consist of a number of nutritional components, such as proteins, lipids, carbohydrates, vitamins, aromas, pigments, antioxidants, and mineral compounds, which are bene- cial to human health. However, a large amount of food is wasted every year in the world owing to the fact that these food products cannot be preserved for a long time under natural conditions. Therefore, different preservation methods including drying, freezing, frying, and cooking are needed to extend the shelf life of food products and to avoid wastage.
