L-精氨酸 | CP2020 | EP11 | USP2023 | AJI92 |
含量 | ≥99.0% | 98.5-101.0% | 98.5-101.5% | 99.0-101.0% |
酸度 | 10.5-12.0 | / | / | 10.5-12.0 |
比旋度[a]D20 | +26.9°-+27.9° | +25.5°-+28.5° | / | +26.9°-+27.9° |
比旋度[a]D25 | / | / | +26.3°-+27.7° | / |
透光 | ≥98.0% | / | / | ≥98.0% |
溶液外观 | / | clear & colorless ≤BY6 | / | / |
氯化物 | ≤0.02% | ≤0.02% | ≤0.05% | ≤0.02% |
铵盐 | ≤0.02% | ≤0.02% | / | ≤0.02% |
硫酸盐 | ≤0.02% | ≤0.03% | ≤0.03% | ≤0.02% |
铁盐 | ≤10PPM | ≤10PPM | ≤30PPM | ≤10PPM |
重金属 | ≤10PPM | / | / | ≤10PPM |
砷盐 | ≤1PPM | / | / | ≤1PPM |
其他氨基酸 | ≤0.4% | / | Individual impurities≤0.5% Total impurities≤2.0% | conform |
茚三酮活性物质 | / | Each impurity≤0.2% Sum of impurities≤ 0.5% | / | / |
干燥失重 | ≤0.50% | ≤0.50% | ≤0.50% | ≤0.50% |
炽灼残渣 | ≤0.10% | ≤0.10% | ≤0.30% | ≤0.10% |
总菌 | ≤ 500 CFU/g | ≤ 500 CFU/g | ≤ 500 CFU/g | ≤ 500 CFU/g |
霉菌&酵母菌 | ≤ 50 CFU/g | ≤ 50 CFU/g | ≤ 50 CFU/g | ≤ 50 CFU/g |
致病菌 | 克罗诺杆菌 /肠杆菌 /沙门氏菌 /蜡样芽胞杆菌 /梭状芽胞杆菌 (可根据要求检测) |