Kojic acid is a microbial fermentation product, an organic acid with antibacterial effects. It is not only present in many fermented products fermented by Aspergillus, but also naturally present in foods such as soybeans and rice. In 1930, people artificially produced it using chemical synthesis methods. In 1970, the industrial production of kojic acid was first realized in Japan.
Items | Specifications | Results |
Appearance | Off-White or white crystal powder | Qualified |
Assay by HPLC | ≥99.0 % | 99.25% |
Melting point | 152-155℃ | 153.6-154.6 |
Loss on weight | ≤0.5% | 0.41% |
Chloride | ≤0.005% | 0.003% |
Heavy metal(Pb) | ≤0.001% | 0.0002% |
Fe | ≤0.001% | 0.0005% |
As | ≤0.0001% | 0.00010% |
Bacteria-index | ≤1000CFU/G | Qualified |
Eumycete | ≤50CFU/G | Negative |
Coli-index | Negative | Negative |
Conclusion | Comply with the above terms |
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