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| Items | Requirements |
| Morphology | Powder |
| Color | Light yellow |
| Odor | Endemic taste and odor of product, no other peculiar smell |
| Impurity | No normal visible extraneous |
| Physicochemical Index | |
| Items | Ordinary type |
| Protein (on a dry basis)% | ≥45.15% |
| Total Amino nitrogen (on a dry basis) % | ≥2.62% |