Food Additives

Benzoic Acid is a kind of Food preservatives, it containts Benzoic acid and sodium benzoate. Benzoic acid at room temperature, insoluble in water in the air (especially hot air) of hygroscopic and volatile, under normal temperature, about 100 ml / 0.34 g, But soluble in hot water, Also soluble in alcohol, chloroform and non-volatile oil.

While in use sodium benzoate, sodium benzoate Benzoic acid and sodium benzoate traits and anti-corrosion properties are similar. I simply introduce sodium benzoate, sodium benzoate mostly for the white, odourless or microstrip benzoin smell, taste sweet, convergence, Soluble in water (normal) 53.0 around 100 ml/g, PH in 8, Sodium benzoate also in alkaline medium acidic preservatives, no sterilizing and bacteriostasis, The optimal PH is 2.5-4.0, when in solution of 5% PH5.0 bactericidal effect is not very good. Sodium benzoate, easy penetration hydrophilic oily cell membranes, interference in into the cell membrane permeability, inhibit the absorption of amino acids, Into the cells of the body cell ionization acidification of the reservoir, and inhibit alkali cellular respiration enzymes activity, prevent acetyl coa condensation reaction, which food antiseptic.

Benzoic acid can be used in class in China face sauce, jam, pickles, canned food and some wine, now the country stipulates benzoic acid class can not use of food in the jelly, Benzoic acid has bigger toxicity, some countries has limited the scope of use it’s salt, many countries have replaced with potassium sorbet.