苯甲酸鈉是酸性防腐劑，它在酸性介質(zhì)中能轉(zhuǎn)化為有活性的苯甲酸，發(fā)揮與苯甲酸相同的作用。那么苯甲酸鈉在食品添加劑領(lǐng)域應(yīng)用是怎樣的呢？下面氫氧化鉀廠家來(lái)為您講解一番。

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.

食品工業(yè)的發(fā)展帶動(dòng)了食品添加劑的發(fā)展，1997年各類食品添加劑產(chǎn)量超過(guò)20萬(wàn)噸。目前允許使用的防腐劑品種有30種，較常用的防腐劑主要有3種，即苯甲酸、山梨酸、丙酸及其鹽類，其中苯甲酸鈉是使用時(shí)間長(zhǎng)、使用量大的食品防腐劑。

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.

它是一種廣譜抗微生物物質(zhì)，在pH值4.5以下時(shí)，能對(duì)各種菌類產(chǎn)生和作用，其防腐能力在pH為2.5～4.0時(shí)佳。當(dāng)pH值大于5.5時(shí)，苯甲酸鈉對(duì)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.

實(shí)際應(yīng)用中，苯甲酸鈉取代苯甲酸成為成為常見(jiàn)的防腐劑的原因是在酸性條件下前者水溶性遠(yuǎn)大于后者，在空氣中穩(wěn)定，且在水溶液體系中更容易溶解和分散。在堿性介質(zhì)中，苯甲酸鈉則無(wú)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.

苯甲酸是一種有機(jī)劑，其效果佳的pH值范圍為2.5一4，當(dāng)pH>5.5時(shí)，對(duì)很多霉菌、酵母效果較差。對(duì)一般微生物的完全抑制小濃度為0.05%一0.1%，苯甲酸進(jìn)入機(jī)體后其毒性都是在肝臟內(nèi)化解的，因此苯甲酸對(duì)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較差，所以一般都制成水溶性好的苯甲酸鈉應(yīng)用。苯甲酸(鈉)是我國(guó)用量大的食品防腐劑。主要用于醬油、醋、醬菜、碳酸飲料等產(chǎn)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.

苯甲酸類防腐劑是以其未離解的分子發(fā)生作用的，未離解的苯甲酸親油性強(qiáng)，易通過(guò)細(xì)胞膜進(jìn)入細(xì)胞內(nèi)，干擾霉菌和細(xì)菌等微生物細(xì)胞膜的通透性，阻礙細(xì)胞膜對(duì)氨基酸的吸收；進(jìn)入細(xì)胞內(nèi)的苯甲酸分子，可酸化細(xì)胞內(nèi)的儲(chǔ)備堿，進(jìn)而抑制微生物細(xì)胞內(nèi)呼吸酶系的活性，組織乙酰輔酶A縮合反應(yīng)，從而起到防腐的作用。

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.

苯甲酸鈉在食品添加劑領(lǐng)域應(yīng)用相關(guān)內(nèi)容便是這樣了，您在使用之前建議來(lái)向購(gòu)買廠家或者有關(guān)人員咨詢咨詢，對(duì)自己以及周圍環(huán)境的負(fù)責(zé)，更多事項(xiàng)就來(lái)我們網(wǎng)站http://www.shrisa.cn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 http://www.shrisa.cn Understand.