L-苯丙氨酸 | CP2020 | EP11 | USP2023 | AJI92 | FCC11 |
含量 | ≥98.5% | 98.5-101.0% | 98.5-101.5% | 99.0-100.5% | 98.5-101.5% |
酸度 | 5.4-6.0 | / | 5.4-6.0 | 5.4-6.0 | 5.4-6.0 |
比旋度[a]D20 | -33.0°--35.0° | -33.0°--35.5° | / | -33.5°--35.0° | -33.2°--35.2° |
比旋度[a]D25 | / | / | -32.7°--34.7° | / | -32.7°--34.7° |
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 | ≤5PPM |
砷盐 | ≤1PPM | / | ≤1PPM | / | |
其他氨基酸 | ≤0.50% | / | Individual impurities≤0.5% Total impurities≤2.0% | conform | / |
茚三酮活性物质 | / | Each impurity≤ 0.2 % Total impurities≤ 0.5 % | / | / | / |
干燥失重 | ≤0.20% | ≤0.50% | ≤0.30% | ≤0.20% | ≤0.20% |
炽灼残渣 | ≤0.10% | ≤0.10% | ≤0.40% | ≤0.10% | ≤0.10% |
总菌 | ≤ 500 CFU/g | ≤ 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 | ≤ 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) |