L-Leucine
INTRODUCTION:
[Product]:L-Leucine
[Structural formula]: (CH3)2CHCH2CH(NH2)COOH
[Molecular formula]: C6H13NO2
[Molecular weight]:131.17
[Descriptions]: White crystal or crystalline powder. Odorless, taste slightly bitter, decomposition in approx. 337℃, slightly soluble in water, insoluble in ethanol.
[Applications]:It is used as food additive, dietary supplement, flavoring and flavoring agent
Quality standard of L-Leucine: FCC IV, CP, AJI97, or at Buyer’s option.
Item | Food grade | Pharmaceutical grade |
Standard | FCC IV | CP95 | AJI 97 |
Content (dry basis) | 98.5%~101.5% | ≥98.5% | 99.0%~100.5% |
Specific optical rotation | +14.5°~+16.5° | +14.5°~+16.0° | +14.9°~+16.0° |
Transmittance | - | ≥98% | ≥98% |
Chloride | - | ≤0.02% | ≤0.020 % |
Ammonium salt (NH4) | - | ≤0.02% | ≤0.02% |
Sulfate (SO4) | - | ≤0.03% | ≤0.020 % |
Ferric salt (Fe) | - | ≤0.003% | ≤0.001 % |
Heavy metal (Pb) | ≤20ppm | ≤10ppm | ≤10ppm |
As content | ≤2ppm | ≤2ppm | ≤1ppm |
Other amino acids | - | conforms | conforms |
Loss on drying | ≤0.20% | ≤0.3% | ≤0.20 % |
Residue on ignition | ≤0.10% | ≤0.1% | ≤0.10 % |
PH value | - | 5.5~6.5 | 5.5 ~ 6.5 |
[Packing]:Packed in craft paper bags or paperboard barrels of net 25KG each.
[Transportation]: Handle with care to avoid damage on packaging. Protect the product from sunlight and rains. Keep it away from poisonous and harmful substances in transit.
[Storage]: Keep in cool and dry place.
Leucine is one of the twenty basic amino acids. It and isoleucine are isomers. In nutrition, leucine is an essential amino acid for human body. Leucine is the most common amino acid in proteins, and it is important for normal development of infants and children and nitrogen balance in adults. It is speculated that leucine may play an important role in maintaining muscle by balancing protein biochemistry and decomposition. The main food sources of leucine are: whole grains, milk, dairy products, eggs, pork, beef, chicken, beans and leafy vegetables.
IUPAC
(E)-N-methyl-1-methylsulfanyl-2-nitroethenamine