Food additive – Sodium benzoate

Sodium benzoate is an organic compound with the chemical formula C7H5NaO2. It is a food additive mainly used as a preservative. It is usually a white particle or crystalline powder with a slightly sweet and acidic taste, stable in the air, easily soluble in water, and its aqueous solution has a pH of 8.

The primary function of sodium benzoate is to inhibit the growth of many microorganisms and fungi, thereby extending the shelf life of food. It combines with substances such as amino acids and proteins to inhibit enzyme activity and prevent food spoilage. Under acidic conditions, the anti-corrosion effect of sodium benzoate is more significant. In alkaline environments, it generates benzoate ions and sodium ions, losing its anti-corrosion effect.

Sodium benzoate is commonly used in many foods and beverages, such as canned beverages, fruit juices, jams, vinegar, seasonings, etc., to extend its shelf life. However, excessive sodium benzoate is harmful to human health and may lead to functional damage to the liver and kidneys. Therefore, the content of sodium benzoate added to food should be strictly controlled and comply with relevant national standards.

In short, sodium benzoate is a commonly used food additive with anti-corrosion properties, but its dosage should be strictly controlled to ensure people’s health.

The ADI (daily allowable intake) of sodium benzoate is 0.35 milligrams per kilogram of body weight. That is to say, an adult weighing 60 kilograms is allowed to consume 2.1 milligrams of sodium benzoate per day. However, excessive intake of sodium benzoate may have negative effects on human health, especially on liver and kidney function. Therefore, the amount of sodium benzoate added during food production and processing should be strictly controlled and should not exceed the relevant national standards. Of course, there’s no need to worry or worry too much!