Product Description Aogubio provides pure amino acid bulk powder with top quality at wholesale price in the  China.  5-HTP, AAKG 1:1 and 2:1, L-Arginine, L-Arginine HCL, L-Phenylalanine, L-Pyroglutamate, Acetyl L-carnitine, L-Aspartic Acid, Beta-Alanine, L-Citrulline, GABA, L-Glutamine, Glycine, L-Lysine, L-Methionine, L-Ornithine, L-Proline, Taurine, L-Theanine, L-Threonine, L-Tryptophan, L-Tyrosine, N-Acetyl-L-Tyrosine, L-Leucine, L-Isoleucine, L-Valine.   Please contact for large quantity order, 10 Kg, 25 Kg, 50 Kg. A nonessential amino acid in human. It plays a key role in the glucose-alanine cycle between muscle tissue and the liver. It is widely used as an ingredient in infusion and infant formula.   BASIC ANALYSIS Analysis Description Test Method Assay (dry basis) 99.0～101.0% HPLC IDENTIFICATION CONFORMS / Loss on drying Not More Than 0.20% Dryer Residue on ignition Not More Than 0.10% Ph. Eur. Endotoxin* Less Than 6.0 EU/g Ph. Eur. State of solution(Transmittance) Not Less Than 98.0% Ph. Eur. PH 5.7~6.7  Ph. Eur. Specific rotation (AT 20°C) +24.5~+26.5°  Ph. Eur. FOREIGN AMINO ACIDS Not More Than 0.5% Ph. Eur. Ammonium (NH4) Not More Than 0.020%   Ph. Eur. Chloride (Cl) Not More Than 0.017%  Ph. Eur. Sulfate (SO4) Not More Than 0.020%  Ph. Eur. Iron (Fe) Not More Than 10 ppm ICP-MS/AOAC 993.14 Lead Not More Than 10 ppm ICP-MS/AOAC 993.14 Arsenic (As) < 1 ppm ICP-MS/AOAC 993.14 Cadmium (Cd) < 2 ppm ICP-MS/AOAC 993.14 Heavy metals (Pb) Not More Than 10 ppm ICP-MS/AOAC 993.14 Mercury (Hg) < 0.5 ppm ICP-MS/AOAC 993.14 Microbial Analysis Total Plate Count < 1,000 cfu/g AOAC 990.12 Total Yeast & Mold < 100 cfu/g AOAC 997.02 E. Coli < 10 cfu/g AOAC 991.14 Coliforms < 10 cfu/g AOAC 991.14 Salmonella Negative ELFA-AOAC Staphylococcus < 10 cfu/g AOAC 2003.07 Function L-citrulline boosts nitric oxide production in the body. Nitric oxide helps your arteries relax and work better, which improves blood flow throughout your body. This may be helpful for treating or preventing some diseases.