L-Cysteine Raw material L-Cysteine powder

CAS:52-90-4

MF:52-90-4

MW:121.16

EINECS:200-158-2

Specification: 99% min L-Cysteine powder

Sample:L-Cysteine powder

Packaging:1kg/bag, 25kg/drum

Brand: Henrikang

Appearance: White

Storage: Cool Dry Place

Shelf Life: 2 Years

Test Method: HPLC

L-Cysteine powder Usage and Synthesis.

L-cysteine is closely related to cystine, and two molecules of cysteine make one molecule of cystine. Cysteine is relatively unstable and can easily be turned into cystine, which can also be reduced again to form cysteine.

Both are sulfur-containing amino acids that play a role in the formation and detoxification of the skin.L-Cysteine is found in keratin, the main protein that makes up fingernails, toenails, skin and hair.

L-Cysteine aids in the production of collagenous tissue, which maintains the elasticity and texture of the skin. It is also associated with the proteins of digestive enzymes. Cysteine supplies the -SH group to many important enzymes in the body, such as succinate dehydrogenase and lactate dehydrogenase.

L-Cysteine is mainly used in cosmetics, medicine and food. In cosmetics, L-cysteine is used in the preparation of perm essence, sunscreen, hair perfume and hair care essence, etc. In medicine, it is used in the preparation of methyl cysteine.

In the pharmaceutical field, it is used in the preparation of methyl cysteine, ethyl cysteine, acetyl cysteine, methyl cysteine, ethyl cysteine and comprehensive amino acid preparations and other drugs. Cysteine can be used as a protective drug against radiation damage.

In food, L-cysteine is used as bread fermentation aid (ripening agent), milk powder and juice with antioxidant stabilizer and pet animal food nutrients.

Uses of L-Cysteine powder.

Mainly used in medicine, cosmetics, biochemical research, etc. It is used in bakery materials to promote the formation of gluten and fermentation, molding, and prevent aging. Used in natural fruit juice to prevent vitamin C oxidation and prevent the juice from turning brown.

The product has a detoxification effect, can be used for acrylonitrile poisoning, aromatic acid poisoning. The product also has the effect of preventing radiation damage to the human body, and is also a drug for the treatment of bronchitis, especially as a phlegmatic drug (mostly in the form of acetyl L-cysteine methyl esterate salt.

Cosmetics are mainly used in cosmetic water, perm solution, sunscreen skin care creams and so on.

Mainly used in medicine, cosmetics, and biochemical research. Used in bread material to promote the formation of gluten and promote fermentation, molding, and prevent aging. Used in the treatment of eczema, urticaria, freckles and other skin diseases.

Characteristic of L-Cysteine powder.

Colorless to white fine columnar crystals or white crystalline powder, with a slight special smell and taste (slightly acidic). Reductive, with anti-oxidation and preventing non-enzymatic browning effect. Melting point 175°C (decomposition). Soluble in water, aqueous solution is acidic, pH value in 3% is 1.2, 1% is 1.7, 0.1% is 2.4. Also soluble in ethanol, ammonia and acetic acid, insoluble in ether, acetone, benzene, carbon disulfide and chloroform. It is one of the amino acids, but is a non-essential amino acid.

Product method of Bulk L-Cysteine powder.

1. tin particles reduction method will be dissolved in dilute hydrochloric acid cystine, filtration, filtrate add tin particles temperature reflux 2h. will be reduced to dilute the solution with water, remove the remaining tin particles, saturated with hydrogen sulfide, filtration, filtering, filter residue with a small amount of water wash, wash, filtrate, combined, concentrated under reduced pressure, cooling crystallization, filtration, drying to get L-cysteine hydrochloride.

2. Electrolysis reduction method will be distilled water, hydrochloric acid, cystine into the electrolysis tank stirring dissolved, maintained at 50 ℃ below the electrolysis to the end point. The electrolyte will be passed hydrogen sulfide for a few hours, filtration. The filtrate is decolorized by adding activated carbon, concentrated under reduced pressure after filtration, crystallized by cooling, filtered and dried to obtain L-cysteine hydrochloride.