Facttory Suplly Amino Acids L-Cysteine Powder CAS 52-90-4

• CAS No.: 52-90-4
• Formula: C3h7no2s
• EINECS: 200-158-2
• Type: Pharmaceutical Intermediates
• Appearance: Powder
• Quality: Refined
• Model NO.: 52-90-4
• Colour: White
• MOQ: 1kg
• Sample: Yes
• Shelf Life: 2 Years
• Usage: Food Supplement
• Transport Package: 25kgs/Drum
• Specification: 99%
• Trademark: ZB
• Origin: China
• Production Capacity: 100000kgs/Month

Product Description

                       

         L-Cysteine

Product Name	L-Cysteine
Category	Amino acids
Analysis	HPLC
Storage	Keep in cool and dry place, well-closed, away from moisture or direct sunlight.

L-Cysteine is one of the 20 natural amino acids and, besides methionine,the only one which contains sulfur. It is a thiol-containing non-essential amino acid that is oxidized to form Cystine. It is a non-essential sulfur-containing amino acid in humans, related to cystine, Cysteine is important for protein synthesis, detoxification, and diverse metabolic functions. Found in beta-keratin, the main protein in nails, skin, and hair, Cysteine is important in collagen production, as well as skin elasticity and texture. Also required in the manufacture of amino acid taurine, Cysteine is a component of the antioxidant glutathione, and plays a role in the metabolism of essential biochemicals such as coenzyme A, heparin, and biotin.
L-cysteine hydrochloride is used in the baking industry as dough conditioner. Specially, it breaks the disulfide bonds of gluten, which lowers the viscosity of the dough. It is then easier to work with and increases the elasticity of the dough, helping it to rise during baking.
L-cysteine is available through many dietary sources, primarily animal protein. Eggs and dairy products also contain significant levels of l-cysteine. Vegetable sources of l-cysteine include broccoli, Brussels sprouts, garlic, granola, sprouted lentils, oats, onions and peppers. The commercial extraction of l-cysteine typically uses human hair, due to its high concentration of this amino acid. Other commercial sources include hog hair and poultry feathers. L-cysteine may also be synthesized in a process that involves fermentation by a variety of E. coli.

 

L-cysteine, a common amino acid in organisms. Mainly used in medicine, cosmetics, biochemical research, etc. Used in bread to promote the formation of gluten, promote fermentation, mold release, and prevent aging. Used in natural juices to prevent vitamin C oxidation and prevent the juice from turning brown. This product has detoxification effect and can be used for a crylonitrile poisoning and aromatic acidosis. The product also has the effect of preventing radiation damage to the human body. It is also a drug for the treatment of bronchitis, especially as a phlegm medicine (mostly used in the form of acetyl L-cysteine methyl ester.Cosmetics are mainly used for beauty water, Perm lotion, sun-proof skin cream, etc.

Testing Item	Standard	Result
Appearance	White crystals or crystalline powder	conforms
Specific rotation[a]D20	+ 8.3°~ +9.5°	+8.72°
State of solution (Transmittance)	≥95.0%	98.5%
Loss on drying	≤0.50%	0.18%
Residue on ignition	≤0.10%	0.07%
Heavy metals(Pb)	≤10PPM	<10PPM
Chloride (Cl)	600---1000ppm	800ppm
A rsenic (As2O3)	≤1PPM	conforms
Iron (Fe)	≤10PPM	<10PPM
A mmonium (NH4)	≤0.02%	<0.02%
Sulfate (SO4)	≤0.030%	≤0.030%
Other amino acids	Chromatographically	Qualified
PH value	4.5 ~ 5.5	5.0
Assay	98.0%~101.0%	99.4%