Food additives is a synthetic or natural substance added to food to improve the quality of food color, aroma, taste, and the needs of anticorrosion and processing. At present, there are 23 categories of food additives in China, including more than 2000 varieties, including acidity regulator, anticorrosive agent, defoamer, antioxidant, bleaching agent, puffing agent, coloring agent, color protecting agent, enzyme preparation, flavoring agent, nutritional fortifier, antiseptic, sweetener, thickener, aroma and so on.
Food additives have greatly promoted the development of the food industry and have been praised as the soul of the modern food industry, which mainly brings many benefits to the food industry. Food additives main functions are as follows:
For example, preservatives can prevent food spoilage caused by microorganisms, prolong the shelf life of food, and also prevent food poisoning caused by microbial contamination. Also such as: antioxidants can prevent or delay the oxidative deterioration of food, to provide food stability and storage resistance, but also can prevent the formation of potentially harmful oil automatic oxidation substances. In addition, it can also be used to prevent enzymatic browning and non enzymatic browning of foods, especially fruits and vegetables. These are of certain significance to the preservation of food.
Improvement of sensory properties of food
Appropriate use of coloring agent, color protecting agent, bleaching agent, edible spice, emulsifier, thickener and other food additives can obviously improve the sensory quality of food and meet people's different needs.
Keep improving the value of nutrition
It is of great significance to prevent malnutrition and nutritional deficiency, promote nutrition balance and improve people's health by adding certain food nutrition fortifier which belong to natural nutrition in food processing.
Increase the variety and convenience
As many as 20000 kinds of food are available to consumers in the market, although most of the products are processed by certain packaging and different processing methods, in the production project, some color, fragrance and flavour products have been added to different degrees in color, fragrance, flavoring and even other food additives. It is these many foods, especially the supply of convenience foods, that bring great convenience to people's life and work.
Convenience food processing
The use of defoamer, filter aid, stability and coagulant in food processing can be beneficial to the processing of food. For example, when using gluconic acid delta lactone as tofu coagulant, it can facilitate the mechanization and automation of tofu production.