L-arginine is one of the 20 amino acids that build up protein. L-arginine is one of the non-essential amino acids, meaning it can be synthesised in the body.
L-arginine is a precursor of nitric oxide and other metabolites. It is an important component of collagen, enzymes and hormones, skin and connective tissues. L-arginine plays important roles in the synthesis of various protein molecules; creatine and insulin being the most easily recognised. It may have antioxidant property and reduces accumulation of compounds such as ammonia and plasma lactate, by-products of physical exercise. It also inhibits platelet aggregation and has also been known to decrease blood pressure.
Certificate of Analysis
Item
Specifications
Test Results
Assay ,% min
98.0～101.0
99.3
pH value
4.5 ～ 5.5
5.2
Specific optical rotation[a]D20°
+ 27.5o ~ +29.0o
+ 28.5°
State of
solution(Transmittance)%, min
95.0
98.7
Loss on drying,% max
0.50
0.27
Residue on ignition,% max
0.10
＜0.10
Chloride (as Cl),% max
0.04
＜0.04
Sulphate(as SO4),% max
0.03
＜0.03
Heavy metals (as Pb),% max
0.001
＜0.001
Iron (as Fe) , % max
0.003
＜0.003
Arsenic (as As),% max
0.0001
＜0.0001
Ammonium (as NH4) ,% max
0.02
＜0.02
Conclusion: This product complies with USP24 standard.