Preservative is able to kill microorganisms or inhibit its growth to breed a kind of material. In Fried products of commonly used antiseptic have the following kinds.
A, benzoic acid and sodium benzoate benzoic acid and says benzoic acid, for those who have burnish can be sublimated leaves, or needle crystal, tasteless or slightly benzaldehyde smell. Slightly soluble in water, but soluble in boiling water and ethanol, in the air in the stable, but slightly hygroscopic. Can prevent fermentation, the sterilization of strong power, the biggest usage of 0.2%. Sodium benzoate has benzoic acid sodium, for white granular or crystalline powder, soluble in water, alcohol. In the air in the stability, heat to melt, and then carbonized. Have prevent fermentation and sterilization function, but the effect than benzoic acid low, maximum use of 0.2%.
Second, the sorbic acid and potassium sorbet sorbic acid also called cool and refreshing tea acid, colorless needle crystal or white crystal powder, tasteless or stimulating odour, soluble in water, soluble in ethanol. Antibacterial force is not very strong, but can effectively inhibit mould and corruption bacteria, the bacteria microbial erosion, can effectively keep food ingredients and the raw ingredient, make food long-term storage. Maximum usage by 0.2%. Potassium sorbate to colorless or white scales crystal powder or particles, tasteless or slightly smell, long-term placed in the air can absorb humidity, oxidative decomposition and with color, soluble in water and ethanol. Function and the sorbic acid is same, because he is soluble in water, so it is more convenient to use. Maximum use of 0.1%.
Three, calcium propionate for white crystalline particles or powder, tasteless or with propionic acid smell, is not easy to be high temperature damage, soluble in water, not soluble in ethanol, ability and not easy decomposition temperature, widely used in food, tobacco, medicine industry, etc. Can prevent products and to extend the life of aging products, is the ideal mouldproof, preservatives. In the food industry, it and other anticorrosive microbicides comparison, can prolong food of preservation of storage period, is the national in the food industry of the promotion of the product.
Four, double acetic acid sodium and acetic acid sodium hydrogen name, hereinafter referred to as the SDA. Acetic acid and acetic acid sodium is the molecules. By combining hydrogen bonding is short, the appearance is white hygroscopic a crystalline powder. In the country is a new type of multi-function green food additives. It is mainly used for food, food mildew, anticorrosive, preservation, seasoning, to improve the nutritional value. It security, non-toxic, no more, no carcinogenic, no teratogenic change, is the world health organization recognized as the 0 toxic substance. Widely used in various food processing production, except for a anticorrosive functions, but also can be used as a nutritional ingredients, can improve the protein conversion and trace elements of the absorption rate, increase food nutritional value
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