| Items | Specification |
|---|---|
| Description | White to creamy-white powder and odorless |
| Identification | Complies with the requirements |
| Solubility | Pratically insoluble in water; slightly soluble in Methanol; soluble in Acetic acid and in Dimethylformamid. |
| Specific rotation | +250°～+295° |
| Assay(On dried basis) | ≥95.0% |
| pH(1%aqueous solution) | 5.5～7.5 |
| Loss on drying | ≤8.0% |
| Ash | ≤0.5% |
| Heavy metals(Total as Pb) | ≤10mg/Kg |
| Arsenic | ≤3mg/Kg |
| Lead | ≤2mg/Kg |
| Mercury | ≤1mg/Kg |
| Particle size | 100% less then 10μm |
| Total plate count | ≤100cfu/g |
| Coliforms | ≤40MPN/100g |
| Listeria monocytogenes | 25g Negative |
Natamycin is a polyene macrolide antifungal agent that can effectively inhibit the growth of fungi such as molds and yeasts and reduce the production of mycotoxins. In June 1982, the U.S. Food and Drug Administration (FDA) officially approved natamycin as a GRAS product and it can be used as a food preservative. In March 1997, the Chinese Ministry of Health officially approved natamycin as a food preservative, mainly used for surface mildew prevention of food.
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