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Chitosan is a natural biological high‑molecular polymer appearing as white crystalline powder. It possesses strong hygroscopicity and is mainly extracted from the shells of crustaceans such as shrimps and crabs, or fungal cell walls. Owing to its excellent biocompatibility, biodegradability and broad‑spectrum antibacterial properties, it is widely applied in medical repair, aesthetic care, food industry and other fields.
| Grade | Deacetylation/Substitution Degree |
|---|---|
| Food Grade | 85%, 90% |
| Medicine Grade | 90%, 95% |
| Industrial Grade | 80%, 85%, 90% |
| Agricultural Grade | 80%, 85%, 90% |
| Water soluble Chitosan | 80%, 85%, 90% |
| Carboxymethyl Chitosan | 80% |
| Hydroxyproply Chitosan | 80% |
| Chitosan Oligosaccharides | 5000, 3000, 2000, 1000Da |
| Test Parameter | Specification Standard | Actual Result |
|---|---|---|
| Appearance | Dark red powder | Complies |
| Odor | Characteristic | Complies |
| Taste | Characteristic | Complies |
| Astaxanthin content | ≥2.0% | 2.69% |
| Loss on drying | ≤5.0% | 3.17% |
| Ash | ≤5.0% | 1.11% |
| Heavy Metals | ||
| As | ≤1ppm | Complies |
| Pb | ≤1ppm | Complies |
| Cd | ≤1ppm | Complies |
| Hg | ≤0.1ppm | Complies |
| Microbiological Control | ||
| Total plate count | ≤30000cfu/g | 6800cfu/g |
| Yeast & mold | ≤100cfu/g | Complies |
| E. Coli | ≤0.92 MPN/g | Complies |
| Salmonella | Negative | Complies |
| Weight | Packing method |
|---|---|
| 1kg | bag/kg, box outside (double plastic bag + Aluminum foil bag inside) |
| 10kgs, 25kg or more | by Drums or carton (2 layers plastic bag inside) |
| Weight | Delivery method | Delivery time | Destination |
|---|---|---|---|
| 1kg-25kgs | EMS, DHL, UPS, Fedex | 3-7days | Door to door |
| 25kgs-100kgs | DHL, FedEx, by Air | 3-7days | Door to door (to Airport by Air) |
| more than 100kgs | by Air | 3-7days | Door to Airport |
| by Sea | 10-35days | Door to port |
