| L-脯氨酸 | CP2025 | EP11 | USP2023 | AJI92 |
| 含量 | ≥99.0% | 98.5-101.0% | 98.5-101.5% | 99.0-101.0% |
| 酸度 | 5.9-6.9 | / | / | 5.9-6.9 |
| 比旋度[a]D20 | -84.5°--86.0° | -84.0°--86.0° | / | -84.5°--86.0° |
| 比旋度[a]D25 | / | / | -84.3°--86.3° | / |
| 透光 | ≥98.0% | / | / | ≥98.0% |
| 溶液外觀 | / | clear & colorless | / | / |
| 氯化物 | ≤0.02% | ≤0.02% | ≤0.05% | ≤0.02% |
| 銨鹽 | ≤0.02% | ≤0.02% | / | ≤0.02% |
| 硫酸鹽 | ≤0.02% | ≤0.03% | ≤0.03% | ≤0.02% |
| 鐵鹽 | ≤10PPM | ≤10PPM | ≤30PPM | ≤10PPM |
| 重金屬 | ≤10PPM | / | / | ≤10PPM |
| 砷鹽 | ≤1PPM | / | / | ≤1PPM |
| 其他氨基酸 | ≤0.5% | / | Individual impurities≤0.5% Total impurities≤2.0% | Individual impurities≤0.5% Total impurities≤2.0% |
| 茚三酮活性物質 | / | Each impurity≤0.2% Total impurities≤0.5% | / | / |
| 干燥失重 | ≤0.30% | ≤0.50% | ≤0.4% | ≤0.30% |
| 熾灼殘渣 | ≤0.10% | ≤0.10% | ≤0.4% | ≤0.10% |
| 內毒素 | <10EU/g | <10EU/g | <10EU/g | / |
| 總菌 | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g |
| 霉菌&酵母菌 | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g |
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