苯甲酸钠是酸性防腐剂，它在酸性介质中能转化为有活性的苯甲酸，发挥与苯甲酸相同的作用。那么苯甲酸钠在食品添加剂领域应用是怎样的呢？下面氢氧化钾厂家来为您讲解一番。
Sodium benzoate is an acidic preservative, which can be converted into active benzoic acid in acidic medium, playing the same role as benzoic acid. What is the application of sodium benzoate in the field of food additives? The following potassium hydroxide manufacturers will explain for you.
食品工业的发展带动了食品添加剂的发展，1997年各类食品添加剂产量超过20万吨。目前允许使用的防腐剂品种有30种，较常用的防腐剂主要有3种，即苯甲酸、山梨酸、丙酸及其盐类，其中苯甲酸钠是使用时间长、使用量大的食品防腐剂。
The development of the food industry has led to the development of food additives. In 1997, the output of various food additives exceeded 200000 tons. At present, there are 30 kinds of preservatives allowed to be used, and there are mainly 3 kinds of commonly used preservatives, namely benzoic acid, sorbic acid, propionic acid and its salts. Among them, sodium benzoate is a food preservative with long use time and large amount.
它是一种广谱抗微生物物质，在pH值4.5以下时，能对各种菌类产生抑菌和杀菌作用，其防腐能力在pH为2.5～4.0时佳。当pH值大于5.5时，苯甲酸钠对很多霉菌和酵母的效果都大打折扣。
It is a broad-spectrum antimicrobial substance. When the pH value is below 4.5, it can produce bacteriostatic and bactericidal effects on various fungi. Its antiseptic ability is better when the pH value is 2.5-4.0. When the pH value is greater than 5.5, the effect of sodium benzoate on many molds and yeasts is greatly reduced.
实际应用中，苯甲酸钠取代苯甲酸成为成为常见的防腐剂的原因是在酸性条件下前者水溶性远大于后者，在空气中稳定，且在水溶液体系中更容易溶解和分散。在碱性介质中，苯甲酸钠则无杀菌和抑制作用。
In practical application, the reason why sodium benzoate has become a common antiseptic instead of benzoic acid is that the water solubility of the former is much greater than that of the latter under acidic conditions, it is stable in air, and it is easier to dissolve and disperse in aqueous solution system. In alkaline medium, sodium benzoate has no bactericidal and inhibitory effects.
苯甲酸是一种有机杀菌剂，其抑菌效果佳的pH值范围为2.5一4，当pH>5.5时，对很多霉菌、酵母效果较差。对一般微生物的完全抑制小浓度为0.05%一0.1%，苯甲酸进入机体后其毒性都是在肝脏内化解的，因此苯甲酸对肝功能衰弱者不宜多用。
Benzoic acid is a kind of organic fungicide. The pH value range of its bacteriostatic effect is 2.5-4. When pH > 5.5, it has poor effect on many molds and yeasts. The low concentration of complete inhibition to general microorganisms is 0.05% – 0.1%. After benzoic acid enters the body, its toxicity is decomposed in the liver. Therefore, benzoic acid should not be used for people with weak liver function.

由于苯甲酸的水溶性较差，所以一般都制成水溶性好的苯甲酸钠应用。苯甲酸(钠)是我国用量大的食品防腐剂。主要用于酱油、醋、酱菜、碳酸饮料等产品的防腐防霉。
Due to the poor water solubility of benzoic acid, sodium benzoate with good water solubility is generally used. Benzoic acid (sodium) is a large amount of food preservative in China. It is mainly used for anti-corrosion and mold prevention of soy sauce, vinegar, pickles, carbonated drinks and other products.
苯甲酸类防腐剂是以其未离解的分子发生作用的，未离解的苯甲酸亲油性强，易通过细胞膜进入细胞内，干扰霉菌和细菌等微生物细胞膜的通透性，阻碍细胞膜对氨基酸的吸收；进入细胞内的苯甲酸分子，可酸化细胞内的储备碱，进而抑制微生物细胞内呼吸酶系的活性，组织乙酰辅酶A缩合反应，从而起到防腐的作用。
Benzoic acid preservatives act on their undissociated molecules. The undissociated benzoic acid has strong lipophilicity and is easy to enter the cell through the cell membrane, interfering with the permeability of the cell membrane of microorganisms such as fungi and bacteria, and hindering the absorption of amino acids by the cell membrane; Benzoic acid molecules entering the cell can acidify the reserve base in the cell, thereby inhibiting the activity of respiratory enzyme system in the microbial cell and organizing acetyl CoA condensation reaction, thus playing a role of antisepsis.
苯甲酸钠在食品添加剂领域应用相关内容便是这样了，您在使用之前建议来向购买厂家或者有关人员咨询咨询，对自己以及周围环境的安全负责，更多事项就来我们网站https://www.tsswhg.com了解吧。
The application of sodium benzoate in the field of food additives is just like this. Before using it, you are advised to consult the purchasing manufacturer or relevant personnel to be responsible for the safety of yourself and the surrounding environment. For more information, please visit our website https://www.tsswhg.com Understand.