硫酸ナトリウム

Origin

Sodium sulphates (E514) are inorganic salts of sodium and sulfuric acid. They can occur naturally as minerals (e.g., thenardite, mirabilite) or be produced synthetically. Synthetic production often involves the reaction of sodium chloride with sulfuric acid or as a byproduct of various industrial processes.

Usage

Sodium sulphates are used in the food industry as acidity regulators and carriers. They can also function as firming agents and stabilizers. Specific applications include: * **Acidity Regulation:** Helps maintain the desired pH level in food products. * **Carrier:** Used to carry other additives or ingredients, ensuring even distribution. * **Firming Agent:** Contributes to the texture and firmness of certain processed foods. * **Dehydrating agent:** Used to remove water from products. Beyond the food industry, sodium sulphates have diverse applications, including in the production of detergents, glass, and textiles. They are also used medicinally as a saline laxative.

Side Effects

Sodium sulphates are generally considered safe for consumption at levels typically used in food. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has not established a numerical Acceptable Daily Intake (ADI) for sodium sulphate, indicating its low toxicity. However, excessive consumption can lead to gastrointestinal issues, such as diarrhea, due to its osmotic effect. Individuals with sodium-restricted diets should be mindful of their intake of sodium-containing additives, including sodium sulphates.

Regulatory Status

Sodium sulphates (E514) are permitted for use as a food additive in many countries, including those in the European Union and the United States. Regulations specify the conditions of use and maximum permitted levels in various food categories. In the EU, it falls under the general provisions for food additives and must comply with purity criteria. In the US, it is generally recognized as safe (GRAS) when used in accordance with good manufacturing practices.