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Food-grade Citric acid
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Product Introduction
Product Description
Citric acid is a white, odorless, crystalline powder with a strong sour taste. It is an organic tricarboxylic acid naturally present in citrus fruits such as lemons, limes, and oranges, and is commercially produced via microbial fermentation of carbohydrates (e.g., corn starch, molasses) using strains of Aspergillus niger.
Widely applied across multiple industries, it serves as a food acidulant (to adjust flavor and pH in beverages, candies, and jams), cleaning agent (for descaling and chelating metal ions in household and industrial cleaners), cosmetic ingredient (to regulate pH in skincare products), and pharmaceutical excipient (as a buffering agent and flavor enhancer in oral medications).
Working Principle
1. Acidity Regulation: Citric acid contains three carboxyl groups (-COOH), which can dissociate hydrogen ions (H⁺) step by step in aqueous solution. It endows food with a refreshing sour taste characterized by mildness and a sweet aftertaste without any bitter or astringent sensation, effectively enhancing the flavor layers of food.
2. Preservation and Freshness Retention: The dissociated hydrogen ions can lower the pH value of the food system, inhibit the growth and reproduction of microorganisms such as bacteria and molds, and thus extend the shelf life of food. Meanwhile, it can chelate with metal ions (e.g., iron, copper) in food to prevent oil oxidation and deterioration, playing a role in enhancing antioxidant efficacy.
3. Chelation and Complexation: The carboxyl and hydroxyl groups in the molecular structure of citric acid have strong chelating ability, and can form stable complexes with metal ions such as calcium and magnesium. In food processing, it can be used for water softening and preventing precipitation in canned food (such as discoloration and turbidity of pulp in fruit cans).
Specification
Product name: Citric acid
Product Description: Colorless or white crystalline particles or powder
Packaging: Double layer PE bags, net weight 25kg/bag
Storage: Clean, dry, and well ventilated everywhere
Main purpose:
1. As an acid flavoring agent, seasoning agent, preservative, and preservative in the food and beverage industry;
2. Used as antioxidants, plasticizers, and detergents in the chemical industry, cosmetics industry, and washing industry.
Product Features
1. High Safety: Naturally occurring in fruits, citric acid is metabolized into carbon dioxide and water in the human body and eliminated without residues.
2. Mild and Pure Sour Taste: Compared with other organic acids (e.g., acetic acid, malic acid), citric acid delivers a milder sourness with a natural fruity aroma, which enhances the refreshing taste of food. It is widely used in fruit juices, sodas, jellies and other products.
3. Versatility: It functions as an acidulant, preservative, chelating agent and antioxidant synergist, etc. It can replace multiple single-function additives, reducing the complexity of food production formulations.
4. Excellent Water Solubility: Highly soluble in water and ethanol with a fast dissolution rate, it can disperse quickly and evenly in food processing, ensuring consistent acidity of the final products.
5. Good Stability: It remains stable under normal temperature and dry conditions. When heated to 175℃, it decomposes into carbon dioxide and water without producing any toxic or harmful substances.
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