| L-亮氨酸 | CP2020 | EP11 | USP2023 | USP24 | AJI92 |
| 含量 | ≥98.5% | 98.5-101.0% | 98.5-101.5% | 98.5-101.5% | 99.0-100.5% |
| 酸度 | 5.5-6.5 | / | 5.5-7.0 | 5.5-7.0 | 5.5-6.5 |
| 卵磷脂 | / | / | / | / | / |
| 粘合剂含量 | / | / | / | / | / |
| 比旋度[a]D20 | +14.9°-+16.0° | +14.5°-+16.5° | / | / | +14.9°-+16.0° |
| 比旋度[a]D25 | / | / | +14.9°-+17.3° | +14.9°-+17.3° | / |
| 透光 | ≥98.0% | / | / | / | ≥98.0% |
| 溶液外观 | / | clear & colorless ≤BY6 | / | / | / |
| 松密度 | / | / | / | / | / |
| 紧密度 | / | / | / | / | / |
| 氯化物 | ≤0.02% | ≤0.02% | ≤0.05% | ≤0.05% | ≤0.02% |
| 铵盐 | ≤0.02% | ≤0.02% | / | / | ≤0.02% |
| 硫酸盐 | ≤0.02% | ≤0.03% | ≤0.03% | ≤0.03% | ≤0.02% |
| 铁盐 | ≤10PPM | ≤10PPM | ≤30PPM | ≤30PPM | ≤10PPM |
| 重金属 | ≤10PPM | / | / | ≤15PPM | ≤10PPM |
| 砷盐 | ≤1PPM | / | / | ≤1.5PPM | ≤1PPM |
| 铅 | / | / | / | / | / |
| 镉 | / | / | / | / | / |
| 汞 | / | / | / | / | / |
| 其他氨基酸 | ≤0.5% | / | Individual impurities≤0.5% Total impurities≤2.0% | / | conforms |
| 茚三酮活性物质 | / | Impurity A at 570 nm≤0.8% Each impruity ≤0.2% Total ≤1.0% | / | / | / |
| 目数 | / | / | / | / | / |
| 干燥失重 | ≤0.20% | ≤0.50% | ≤0.2% | ≤0.2% | ≤0.20% |
| 炽灼残渣 | ≤0.10% | ≤0.10% | ≤0.4% | ≤0.4% | ≤0.10% |
| 有机挥发物 | / | / | / | conforms | / |
| 总菌 | ≤ 1000 CFU/g | ≤ 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 | ≤ 100 CFU/g |
| L-亮氨酸 | 高纯企标 | 速溶 | 造粒 |
| 含量 | ≥98.5% | ≥95.0% | ≥95% |
| 酸度 | / | / | / |
| 卵磷脂 | / | 0.5～1.0% | / |
| 粘合剂含量 | / | / | ≤5% |
| 比旋度[a]D20 | +14.9°-+16.0° | / | / |
| 比旋度[a]D25 | / | / | / |
| 透光 | ≥98.0% | ≥98.0% | / |
| 溶液外观 | / | / | / |
| 松密度 | / | ≥0.25g/ml | ≥0.50g/ml |
| 紧密度 | / | ≥0.30g/ml | ≥0.55g/ml |
| 氯化物 | ≤0.01% | / | / |
| 铵盐 | / | / | / |
| 硫酸盐 | ≤0.02% | / | / |
| 铁盐 | / | / | / |
| 重金属 | / | ≤10ppm | ≤10ppm |
| 砷盐 | / | ≤1ppm | ≤1ppm |
| 铅 | / | ≤3ppm | ≤3ppm |
| 镉 | / | ≤1ppm | ≤1ppm |
| 汞 | / | ≤0.3ppm | ≤0.1ppm |
| 其他氨基酸 | Individual impurities≤0.2% Total impurities≤1.0% | / | / |
| 茚三酮活性物质 | / | / | / |
| 目数 | / | ≥95% through 80 mesh | ≥90% through 20 mesh ≤30% through 80 mesh |
| 干燥失重 | ≤0.20% | ≤1.0% | ≤2.0% |
| 炽灼残渣 | / | ≤0.50% | ≤0.4% |
| 有机挥发物 | / | / | / |
| 总菌 | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g |
| 霉菌&酵母菌 | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g |
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