What is L-Cysteine?
L-Cysteine is a non-essential amino acid, converted from methionine in the body with the help of vitamin B6. The best dietary sources of L-Cysteine are meat, eggs, and dairy products. Vegetarians often lack L-Cysteine. If you are a vegetarian, it is recommended that you take an appropriate L-Cysteine supplement. L-Cysteine plays an important role in protein synthesis and metabolism. It is also used in various fields, such as food additives, biochemical research, and cosmetics.
Highassay provides L-cysteine that meets the AJI92 quality standard. If you are interested, please contact us as soon as possible.
Benefits of L-Cysteine
- L-Cysteine can enhance central nervous system function and play an important role in relieving anxiety and improving memory.
- L-Cysteine is primarily found in keratin, making it extremely important and indispensable for the growth and health of nails, hair, and skin.
- L-Cysteine can be used to synthesize glutathione, which acts as an antioxidant. Internally, it neutralizes free radicals and protects cell membranes and proteins. Externally, when added to anti-aging products, it promotes a youthful appearance from the inside out.
- L-Cysteine helps maintain normal liver function and binds to toxic substances in the body to form water-soluble complexes, facilitating their elimination and reducing the burden on the liver and body.
If you have any questions about processing L-Cysteine, Highassay’s R&D team is here to help.
A Brief Introduction to L-Cysteine
Molecular Formula：C3H7NO2S
Molecular Weight：121.15
CAS No.：52-90-4
Appearance：White crystals or crystalline powder
Regular commercial package: 25kg/drum
Application of L-Cysteine
Highassay adheres to strict quality control (QC) to produce L-Cysteine. Buy L-Cysteine in bulk from us now to get competitive market prices.
Food AdditivesL-Cysteine can be added to nutritional supplements for specific groups of people to supplement directly. It can also be used as a food additive to accelerate bread fermentation, enhance food texture, and extend the shelf life of food.
PharmaceuticalsL-Cysteine can be formulated into tablets, infusions, and other forms for the treatment of diseases. It is primarily used in liver, detoxification, and expectorant medicines. It can also serve as a pharmaceutical intermediate for many APIs.
CosmeticsAdded to various cosmetics, such as serums, creams, and masks, it locks in moisture, moisturizes, and whitens skin, making your skin appear younger.
Hair CareAdded to hair care products, it improves hair quality and strengthens hair, resulting in smooth, lush hair.
Animal FeedAdded to animal feed to increase the nutritional content of the feed itself, it not only boosts animal immunity and promotes growth, but also reduces feeding costs and increases feed utilization.
L-Cysteine Hydrochloride VS L-Cysteine
L-Cysteine hydrochloride is formed by the reaction of L-cysteine with hydrochloric acid. The two are similar in that they undergo the same metabolic pathway in the body. However, because L-cysteine is a naturally occurring amino acid, L-cysteine is less stable than L-cysteine hydrochloride. L-Cysteine hydrochloride exists in two different forms: anhydrous and monohydrate.
Since 2002, our company has been certified by the State Administration of Quality Supervision, Inspection and Quarantine (GMP) and has subsequently passed international certifications such as ISO9001, FSSC22000, KOSHER, and HALAL. In 2014, we passed the US FDA’s on-site inspection with zero defects. Highassay has earned a strong reputation in the Chinese and global amino acid markets for its high-quality products and satisfactory service.
We ship within 1-3 days. You can specify your preferred shipping method and offer expedited service.
Yes, we will provide the best bulk price based on your specific needs.
Specification of L-Cysteine
| L-Cysteine Base | AJI92 |
| Assay | 98.0～101.0% |
| PH | 4.5～5.5 |
| Specific rotation[a]D20 | +8.3°～ +9.5° |
| Specific rotation[a]D25 | / |
| Transmittance(T430) | ≥95.0% |
| Chloride(Cl) | ≤0.04% |
| Ammonium(NH4) | ≤0.02% |
| Sulfate(SO4) | ≤0.03% |
| Iron(Fe) | ≤10ppm |
| Heavy metals(Pb) | ≤10ppm |
| Arsenic | ≤1ppm |
| Other amino acids | conforms |
| Ninhydrin-positive substances | / |
| Loss on drying | ≤0.50% |
| Residue on ignition | ≤0.10% |
| Total plate count | ≤ 1000 CFU/g |
| Moulds & Yeasts | ≤ 100 CFU/g |
