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CITRIC ACID
Specification
Industrial grade citric acid is an important organic compound widely used in food, medicine, chemical and cosmetic industries. With the chemical formula C6H8O7, it is a white crystalline powder with an acidic and lemon taste. In industrial production, it is usually obtained by microbial fermentation, the main microorganisms used are Aspergillus Niger and yeast
|
Item name |
Citric acid |
|
Appearance |
Colorless or white crystals or powder, odorless and tastes |
|
Content (%) |
99.8 |
|
Light Transmittance (%) |
99.9 |
|
Moisture (%) |
0.1 |
|
Readily Carbonisablle Substance |
0.1 |
|
Sulphated Ash (%) |
﹤0.05 |
|
Chloride (%) |
﹤0.005 |
|
Sulphate (%) |
﹤0.01 |
|
Oxalate (%) |
﹤0.01 |
|
Calcium (%) |
﹤0.02 |
|
Iron (mg/kg) |
﹤5 |
|
Arsenic (mg/kg) |
﹤1 |
|
Lead (mg/kg) |
﹤0.5 |
Application
There are three main industrial production methods of citric acid: liquid deep fermentation, liquid surface fermentation and solid state fermentation. Among them, liquid deep fermentation accounts for about 80% of the global production of it due to the advantages of easy control, high efficiency and low cost. In the food industry, it is used as an acid, preservative, antioxidant and stabilizer to enhance the aroma and extend the shelf life of food products. In the pharmaceutical industry, it can be used as a stabilizer and preservative for drugs.
Emerging applications for industrial-grade it include as an ingredient in household cleaners, which chelate hardness ions in water without causing eutrophication to aquatic systems, making it more environmentally friendly than phosphates previously used in cleaners. In addition, it is also used as a protein crosslinker and plasticizer in the food industry to improve the texture and stability of food by reacting with the protein hydroxyl group.
The global market for it is growing rapidly, with global production reaching approximately 2.8 million tons in 2022 and expected to reach 3.3 million tons by 2028, representing a compound annual growth rate of 2.78%. The Asia-Pacific region (excluding Japan) dominates in terms of market value, while Western Europe leads in terms of production scale
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