| 外观 | white or cream-color and free-flowing powder |
| Viscosity | 1200 – 1600 mpa.s[ 1% Xanthan Gum in 1% KCl Brookfield, LVTD,spindle 3.60rpm, 25] |
| Assay(on dry basis) | 91.0 – 108.0% |
| Loss on drying(105oC, 2hr) | 6.0 – 12.0% |
| V1 : V2: | 1.02 – 1.45 |
| Pyruvic Acid | ≥ 1.5% |
| PH of 1% solution in water | 6.0 – 8.0 |
| Heavy metals(as Pb) | ≤ 20 mg/kg |
| Lead(Pb) | ≤ 5 mg/kg |
| Arsenic(As) | ≤ 2 mg/kg |
| Nitrogen | ≤ 1.5% |
| Ash | ≤ 13% |
| Particle size | 80 mesh: 100% min, 200 mesh: 92% min |
| 菌落总数 | ≤ 2000/g |
| Yeasts and moulds | ≤ 100/g |
| Pathogens germs | absence |
| S. aureus | 阴性 |
| Pseudomonas aeruginosa | 阴性 |
| Salmonella sp. | 阴性 |
| C. perfringens | 阴性 |
xanthan gum
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