L-半胱氨酸

L-半胱氨酸（CAS 52-90-4）：分子式 C3H7NO2S、分子量 121.16。

产品概览

应用领域

登记用途：Uses: CIR ingredient: Cysteine、Cysteine is a non-essential amino acid that has been used as a dough conditioner and veterinary detoxicant、[Merck Index] Used as a flavoring agent、dough strengthener、nutritional supplement、and flour treating agent for foods、[FDA] Used for biochemical and nutritional research and as a medication、[HSDB]、Reported uses (ppm):、Table: Reported uses (ppm): (Flavor and Extract Manufacturers' Association、1994) [Table#3867]、Biochemical and nutrition research、reducing agent in bread doughs (up to 90 ppm).、MEDICATION、MEDICATION (VET)、Treatment with cysteine reduced seedling injury caused by gamma-irradiation of sorghum seed. Cysteine effects were most pronounced in primary root elongation.、Use (kg) in Switzerland (2009): >10000、Use (kg、approx.) in Germany (2009): >100000、exact) in Germany (2009): 132069、Use (kg) in France (2004): 96759、Consumption (g per capita) in Switzerland (2009): 1.3、Consumption (g per capita、approx.) in Germany (2009): 1.2、exact) in Germany (2009): 1.6、Consumption (g per capita) in France (2004): 1.6、Excretion rate: 0.3、Calculated removal (%): 92.1、For the prevention of liver damage and kidney damage associated with overdoses of acetaminophen、Use Classification: Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes、Flavoring Agents -> JECFA Flavorings Index、Cosmetics -> Reducing、Antistatic、Antioxidant、Hair conditioning、Household Products: Information on 4 consumer products that contain Cysteine in the following categories is provided:、• Personal Care、Methods of Manufacturing: By addition of a thiol compound to an unsaturated amino acid derivative、by hydrolysis of proteins in the presence of carbon dioxide、by treating in HCl hydrolysis of proteins in the presence of carbon dioxide、by treating an HCl hydrolysate of hair with CuO2、followed by the decomposition of the resulting copper-cysteine complex with hydrogen sulfide、by the addition of thioacetic acid to alpha-acetamido acrylic acid、by treatment of a keratine HCl hydrolysate with zinc to reduce the cystine present to cysteine、by electrolytic reduction of cystine.、L-Cysteine used to be produced almost exclusively by hydrolysis of hair or other keratins. The amino acid isolated was l-cystine、which was reduced electrolytically to l-cysteine. L-Cysteine has also been prepared from beta-chloro-d、l-alanine and sodium sulfide with cysteine desulfhydrase、an enzyme obtained from、e.g.、Citrobacterium freundii. Today、however、the main processes for cysteine production are biological. A direct fermentation process has been developed for the manufacture of l-cystine、using a modified Escherichia coli bacterium. The technology has been extended to prepare other modified l-cysteine analogues. An enzymatic process for l-cysteine has been successfully developed using microorganisms capable to hydrolyze 2-amino-delta2-thiazoline 4-carboxylic acid (ATC) which is readily available from methyl alpha-chloroacrylate and thiourea. A mutant of Pseudomonas thiazolinophilum converts d、l-ATC to l-cysteine in 95% molar yield at product concentrations higher than 30 g、L.、Formulations、Preparations: Available commercially as L(+)-cysteine hydrochloride.、U.S. Production: Non-confidential 2012 Chemical Data Reporting (CDR) information on the production and use of chemicals manufactured or imported into the United States. Chemical: L-Cysteine. National Production Volume: 28、660 lb、yr.、General Manufacturing Information: L-Cysteine: ACTIVE、A non-essential amino acid in human development.、An amino acid derived from cystine、occurring naturally in the L-form ...。

技术档案

这个产品是什么

L-半胱氨酸 是一种化工化合物，登记 CAS 号为 52-90-4，分子式 C3H7NO2S（分子量 121.16）。

识别信息

登记 CAS 号：52-90-4

其分子式 C3H7NO2S 由 3 个碳、7 个氢、1 个氮、2 个氧、1 个硫 组成。

别名/同义词：L-半胱氨酸 · L-Cystein

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