Advantage: Plant fermentation instead of animal hair extraction. There has been a huge breakthrough in production technology, which can produce more efficiently and control the cost well. The purity of the product has also been improved.

After L-cystine is obtained from corn starch fermentation, L-cystine [HCl]→[electrolytic reduction] L-cysteine hydrochloride [decolorization, concentration, crystallization]→ L-cysteine hydrochloride crystal decolorization, concentration, crystallization electrolysis is completed, cut off the power supply, and add 10g/L(1%) activated carbon according to the dosage. Heat to 70 ° C and keep warm for half an hour. Filter for filtrate. And concentrate it under reduced pressure until there is crystallization, stir so that the crystallization is completely precipitated, filter the crystallization, wash with 95% ethanol, vacuum drying below 60℃, to obtain L-cysteine hydrochloride without crystal water.

Basic Information of L-Cysteine hydrochloride monohydrate(CAS 7048-04-6)

Name: L-Cysteine hydrochloride monohydrate

CAS Number: 7048-04-6

Molecular Formula: C3H7NO2S·HCl·H2O （or C3H10ClNO3S）

Molecular Weight: 175.64 （or 175.63）

Appearance: Colorless to white prismatic crystals or white crystalline powder with a slight specific odor.

Melting Point: 175°C

Refractive Index: 6° （C=8，1mol/L HCl）

Solubility: Soluble in water, alcohol, ammonia, and acetic acid. Insoluble in benzene, ethyl acetate, and carbon tetrachloride. A 1M aqueous solution is clear and colorless at 20°C.

Optical Rotation: +6.0~+7.5° （20°C/D） （c=8，6mol/l HCl） （dried basis）

Vapor Pressure: <0.1 hPa （20°C）

PH Value: The pH value of a 1% aqueous solution is 1.7；The pH value of solid is 0.8~1.2 （100g/l，H2O，20°C）

Hygroscopicity: Hygroscopic

Stability: Stable but incompatible with strong oxidizing agents, most common metals, and hydrogen chloride.

Chemical Properties: It has reducing properties and antioxidant and non-enzymatic browning prevention effects.

Safety

1. The LD50 for rats by oral administration is 3.46mg/kg.
2. Storage Condition: Store at room temperature.
3. It is incompatible with strong oxidizing agents, most common metals, and hydrogen chloride.

Applicationsof L-Cysteine hydrochloride monohydrate(CAS 7048-04-6)

1. L-Cysteine hcl mono is used as a fermentation promoter in flour products to accelerate gluten formation and prevent aging. It is allowed to be used in fermented flour products in China with a usage amount of 0.06g/kg.
2. L-Cysteine hcl mono is used as an additive in pharmaceuticals, food, and cosmetics. For example, as a nutritional supplement, antioxidant, and color fixative.
3. L-Cysteine hcl mono has detoxifying effects on acrylonitrile and aromatic poisoning, prevents radiation damage, treats tracheitis and reduces phlegm, and detoxifies alcohol and its acetaldehyde in the body.

Shaanxi Lifewe Bioengineering Co.,Ltd. (herein after referred to as the company) was founded in 2017, is located in Yangling National Agricultural Industry Demonstration Park, is a research and development, production and marketing Sales and services as a whole, the use of synthetic biology technology to produce bio-based chemicals and functional microorganisms and other products, committed to modern agriculture and human health industry development Innovative enterprises.

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