Sodium benzoate is mainly used as a food preservative
Sodium benzoate is the sodium salt of benzoic acid, the chemical formula is C7H5NaO2, the appearance is white granules or crystalline powder, with a slight benzoin odor and a slightly sweet and astringent taste. Sodium benzoate is easily soluble in water, the aqueous solution is alkaline, soluble in some organic solvents such as methanol, ethanol and glycerol, and is stable in air. Sodium benzoate can be used in food, medicine, cosmetics, dyes, plastics and other industries.
The food and beverage field is an important application market for sodium benzoate. Because sodium benzoate has broad-spectrum antimicrobial properties, it is mainly used as a preservative in food and beverages, especially under acidic conditions, sodium benzoate has a strong antibacterial effect, and is widely used in preserves, jams, fruit juices, carbonated drinks, cream, Antiseptic field of candy, soy sauce and other products. In addition, sodium benzoate can also be used to synthesize fungicides, mordants, plasticizers, fragrances and other products, used in medicine, dyes, plastics, cosmetics and other industries.
Sodium benzoate has excellent bactericidal and bacteriostatic effects under acidic conditions, but loses bactericidal and bacteriostatic effects under alkaline conditions, and is highly dependent on the pH value of food and beverages in practical applications. As a food and beverage preservative, sodium benzoate has the advantage of being stable in the air, but it will produce astringency in the production of meat products. Based on the above problems, potassium sorbate and other preservatives with better preservative effect, wider application range of pH value, no odor, good thermal stability and higher safety have a greater substitution effect on sodium benzoate.
Industry analysts from Xinsijie said that sodium benzoate is mainly used as a food and beverage preservative and needs