| ≥1 piece |
olecular formula: C6H5COONa
Is benzoic acid sodium salt, odorless or slightly benzoin odor, in part to have the activity of benzoic acid in acidic food, anticorrosive mechanism with benzoic acid.Because than benzoic acid to dissolve in water, and stable in the air, to inhibit the action of the yeast and bacteria is strong, so more often than benzoic acid.Toxicology basis: LD rat oral 4070 mg/kg (bw) 50 gras FDA - 21 CFR 184.23, 181.733 ADI 0 to 5 mg/kg (bw) (the amount of the formic acid and its salt to benzoic acid) (FAO/WHO, 1994)
The anti-corrosion mechanism
Benzoic acid kind of preservative is, its not reacted on the molecular dissociation of dissociation acid strong lipophilicity, easily through the cell membrane, enters the cells, interfere with mold and bacteria such as microbial cell membrane permeability, prevent the membrane on the absorption of amino acids, into benzoic acid molecules within the cell, acidification of alkaline storage inside the cell, inhibit microorganism fine intracellular respiration enzymes activity, thus have antiseptic effect (Hou Zhenjian, 2004).
Benzoic acid is a kind of broad spectrum antimicrobial agent, yeast, mold, parts of bacterial action effect is very good, the allowed maximum range, in the pH below 4.5, for a variety of bacteria have inhibition.
Application and limited:
Benzoic acid and sodium benzoate as a preservative is widely used in food processing and preservation, and part of the limited use in food in some countries.Because in the food, benzyl formate can play a role in the free state, so the effect is better in the acid food.Benzoic acid in carbonated drinks, soy sauce, jam, candied fruit and fruit and vegetable drinks, such as use benzoic acid in soy sauce and beverage can be used with on - hydroxy benzoic acid esters and increase efficiency.Benzoic acid and sodium benzoate are often used to preserve high acidity fruit, jam, beverage syrup and other acidic foods, you can share, and low temperature sterilization synergy effect.
Benzoic acid and sodium benzoate is usually limited to food protein content is higher.Sodium benzoate on the role of microorganisms in benzoic acid is the same, but because is the sodium salt, if you want to make the same as the benzoic acid bactericidal effect, the required amount is 1.2 times of benzoic acid.
According to the FAO, benzoic acid and sodium benzoate can be used for frozen fish, fish, fish paste products, but didn't put meat on the using range.In addition, in the above-mentioned allows the use of benzoic acid and sodium benzoate in the country, these two kinds of additives are not recommended to use as a meat preservative
Physico-chemical property:
| Item | Standard (Q/WYJ103-2008) |
| Appearance | White Crystalline Flakes |
| Content | 98 % |
| Melting Point | 121-123ºC |