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In the food industry, citric acid anhydrous is widely used as a souring agent, solubilizer, buffer, antioxidant, deodorant, chelating agent and so on.
The specific uses of citric acid in the food industry are as follows: 1. Beverages: Citric acid is one of the natural components of fruit juice, which can give fruit flavor and also have solubilization, buffering, antioxidant and other effects, so that sugar, flavor, pigment and other components in the beverage blend and coordinate, forming a harmonious taste and aroma, but also increase the anti-microbial antiseptic effect. 2. Jam and jelly: The role of citric acid in jam and jelly is similar to that in beverages, mainly regulating the pH of the product and giving the product a sour taste. 3. Candy: Citric acid added to candy can increase the sour taste and prevent the oxidation of various components and the crystallization of sucrose. In the production of pectin gummies, citric acid can regulate sour taste and enhance gel strength. 4. Frozen food: Citric acid has the characteristics of chelation and pH adjustment, which can strengthen the antioxidant effect and inactivate enzymes, and can reliably ensure the stability of frozen food.
Items | Specifications | Results |
Appearance | Colorless, translucent crystals | Colorless, translucent crystals |
Assay,% | 99.5---100.5 | 99.8% |
Identification | Pass the test | Pass the test |
Readily Carbonizable Substances | Pass the test | Pass the test |
Residue on Ignition,% | ≤ 0.05 | 0.03 |
Oxalate,% | ≤ 0.01 | < 0.01 |
Lead (as Pb) | ≤ 0.5ppm | < 0.5ppm |
Arsenic | ≤ 1ppm | < 1ppm |
Water,% | ≤ 0.5 | 0.3 |
Conclusion | The product conforms to the above specifications. | |
| Product parameters | |
| Cas number: | 77-92-9 |
| Appearance: | Colourless or white crystalline granule or powder |
| Purity: | 99.5% - 100.5% |
| Package details: | 25kg/bag |
| Brand: | Fortunachem |
Citric acid is a weak organic acid with the chemical formula C₆H₈O₇. It is a natural preservative and a key metabolic intermediate in the citric acid cycle (Krebs cycle) in all aerobic organisms.
Natural Source: Predominantly found in citrus fruits (lemons, limes, oranges), giving them their characteristic sour taste.
Commercial Production: Primarily produced via the industrial fermentation of carbohydrate solutions (often from molasses) by the mold Aspergillus niger.
Key Properties: It is a strong chelating agent (binds to metals), acts as a natural preservative (acidulant), and provides a pleasant, sharp sourness.
Citric acid is one of the most versatile and widely used food additives and industrial chemicals.
Acidulant & Flavor Enhancer: Provides tartness to soft drinks, candies, jams, jellies, and fruit-flavored products (E330 in the EU).
Preservative: Lowers pH to inhibit the growth of bacteria and molds in canned foods, sauces, and preserves.
Antioxidant Synergist: Enhances the effect of antioxidants in oils and fats.
Emulsifier: Helps keep fats dispersed in processed cheeses and ice creams.
Leavening Agent: In baking powders, it reacts with bicarbonates to produce carbon dioxide gas.
Effervescent: Key ingredient in effervescent tablets and powders (e.g., for vitamins or pain relief).
Anticoagulant: Used as a chelating agent in blood collection tubes to prevent clotting by binding calcium.
Cosmetics & Toiletries: Acts as an acidifier, antioxidant, and preservative in creams, gels, and shampoos. Used in skincare for its mild exfoliating properties.
Descaling Agent: Effectively removes limescale and rust from kettles, boilers, and coffee makers due to its chelating power. A key ingredient in eco-friendly cleaning products.
Detergent Booster: Used in phosphate-free detergents and dishwashing powders to soften water and improve surfactant efficiency.
Water Softening: In soaps and detergents.
Photography & Textiles: As a pH adjuster in developing baths and dyeing processes.
Concrete Retarder: Slows the setting of cement.
Citric acid is "Generally Recognized As Safe" (GRAS). While safe in food, the pure powder or highly concentrated solutions can irritate eyes and skin. It is a cornerstone of modern industry due to its multifunctionality, effectiveness, biodegradability, and low cost.
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