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The uses of benzoic acid preservatives

Views: 0     Author: Site Editor     Publish Time: 2024-04-25      Origin: Site


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Overview of benzoic acid as a preservative


Benzoic acid is an organic acid naturally present in many plants and animals. Due to its broad-spectrum inhibitory effect on microorganisms, benzoic acid and its salts are widely used as food additives to extend the shelf life of food and reduce the risk of foodborne diseases.


The mechanism of action of benzoic acid


The mechanism of action of benzoic acid and its salts as preservatives is mainly by interfering with the cell membrane permeability of microorganisms, thereby affecting the pH value and metabolic processes within cells. Benzoic acid can penetrate the cell wall of microorganisms and dissociate into benzoate ions and hydrogen ions upon entering the cell. The accumulation of hydrogen ions can lower the pH value inside the cell, thereby inhibiting the growth and reproduction of microorganisms.


The application of benzoic acid in the food industry


Benzoic acid and its salts are used in various foods, including but not limited to:


Carbonated beverage: used to inhibit the growth of bacteria and yeast, and maintain the freshness of the beverage.


Juice and juice drinks: prevent juice from spoiling and extend shelf life.


Jam and Jelly: Inhibit mold growth and maintain the stability of jam and jelly.


Pickled food: Used in kimchi and other pickled foods to prevent microbial spoilage.


Dairy products: Used in certain dairy products, such as some flavored yogurt, to extend the shelf life.


Baking food: used in certain cakes and pastries to prevent mold growth.


Security assessment


The safety of benzoic acid and its salts has been recognized by multiple international organizations, including the World Health Organization (WHO) and the United States Food and Drug Administration (FDA). They are classified as GRAS (recognized as safe) substances. However, for individuals who are allergic to benzoic acid, consuming foods containing benzoic acid may cause allergic reactions.


Future development trends


With the increasing concern of consumers for food safety and health, the future development trend of benzoic acid as a preservative may include:


Safety research: Continue to conduct safety research on benzoic acid and its salts to ensure their safe use in food.


Regulatory updates: With the progress of scientific research, relevant regulations and standards may be updated to reflect the latest research results.


Alternative development: Research and develop safer and more effective natural preservatives as substitutes for benzoic acid.


Consumer education: Strengthen education for consumers and increase their awareness of food additives and food safety.




The application of benzoic acid and its salts as preservatives in the food industry has a long history and broad foundation. They play an important role in maintaining the freshness and safety of food by inhibiting the growth of microorganisms. With the advancement of technology and changes in consumer demand, the application of benzoic acid and its salts will continue to be optimized, and new preservatives will also be developed and applied to meet market demand. In the future, the application of benzoic acid in the field of food preservatives will be more scientific, rational, and safe.

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