Xi 'an Shilin Biotechnology Co., Ltd
| Payment Terms | T/T,alibaba,paypal |
| Delivery Time | 3-5days |
| Packaging Details | 1kg/bag 25kg/drum |
| Name | L-cystine Powder |
| Appearance | White powder |
| Purity | 98% |
| MOQ | 1kg |
| Brand | SLBIO |
| Certificate | ISO22000/ISO9001/HACCP |
| Storage | Store in a well-closed place with constant low temperature and no direct sun light |
| Shelf life | 24 Months When Properly Stored |
| Brand Name | SL |
| Model Number | SL26010704 |
| Certification | ISO22000/ISO9001/HACCP/FDA |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T,alibaba,paypal | Delivery Time | 3-5days |
| Packaging Details | 1kg/bag 25kg/drum | Name | L-cystine Powder |
| Appearance | White powder | Purity | 98% |
| MOQ | 1kg | Brand | SLBIO |
| Certificate | ISO22000/ISO9001/HACCP | Storage | Store in a well-closed place with constant low temperature and no direct sun light |
| Shelf life | 24 Months When Properly Stored | Brand Name | SL |
| Model Number | SL26010704 | Certification | ISO22000/ISO9001/HACCP/FDA |
| Place of Origin | CHINA |
L-Cystine is an organic compound with the molecular formula C6H12N2O4S2 and a molecular weight of 240.3. It appears as white hexagonal plate-like crystals or a white crystalline powder. It is present in small amounts in proteins, primarily in the keratin of hair, nails, etc.
In the food industry, it is used as a dairy additive and a bread-making accelerator. When heated with sugars in food, it produces various special aromas and prevents oil oxidation, making it widely applicable in food processing. In the cosmetics industry, it is a raw material for producing cold-stuffing agents.
Maintaining Protein Structural Stability: The disulfide bond of L-cysteine is a key stabilizing factor in the tertiary and quaternary structures of proteins, especially indispensable in proteins such as keratin and insulin, directly affecting the strength and elasticity of hair and nails.
Antioxidant and Detoxification Support: In the body, it can be reduced to cysteine, which is then used to synthesize glutathione—a core endogenous antioxidant and detoxifier in the human body. Its sulfhydryl group can directly bind to heavy metal ions (such as lead and mercury), promoting their excretion.
Promoting Wound Healing and Skin Health: By supporting collagen cross-linking and granulation tissue formation, it accelerates the repair process of skin, mucous membranes, and other tissues. It has a promoting effect on the healing of ulcers, burns, and postoperative wounds.
Regulating Immune Function and Metabolism: As an amino acid required for T lymphocyte proliferation, it affects cellular immune responses. Its sulfur-containing group participates in the methionine cycle, indirectly supporting methylation metabolism and homocysteine regulation.
Hair and Nail Health Products: Used as an ingredient in health supplements or skincare products to prevent hair loss and improve fragile hair, reducing breakage and split ends by strengthening keratin structure. Also used in nail strengtheners to improve brittleness and splitting.
Liver Protection, Detoxification, and Antioxidant Supplements: Added to liver-protective products to aid in the repair of chemically induced liver damage by increasing glutathione levels. Also used as an antioxidant component to delay aging and mitigate the effects of environmental toxins.
Wound Healing and Skin Repair: Used in medical dressings or nutritional support for chronic ulcers, bedsores, and other difficult-to-heal wounds. Added to post-operative repair or scar care products to promote tissue regeneration.
Special Medical and Food Industries: Used as a monitoring indicator in dietary management of metabolic diseases such as hereditary cystinuria. Used in the baking industry as a bread improver (dough fortifier) to improve gluten network elasticity through disulfide bonds.
| Item | Specifications | Results |
| Assay, %min | 98.5～101.0 | 99.4 |
| Ph value (5% in water) | 5.0～6.5 | 5.40 |
| Specific optical rotation[a]20D | -215° ～ -225° | -217.8° |
| State of solution (Transmittance),% max | 98.0 | 98.32 |
| Loss on drying,% max | 0.20 | 0.14 |
| Residue on ignition,% max | 0.10 | 0.06 |
| Chloride (as Cl),% | 0.02 | <0.02 |
| Sulphate(as SO4),% | 0.02 | <0.02 |
| Heavy metals (as Pb),% | 0.001 | <0.001 |
| Iron(as Fe),%, | 0.002 | <0.002 |
| Arsenic (as2O3As),%max | 0.0001 | <0.0001 |
| Ammonium (as NH4),%max | 0.02 | <0.02 |
For some products that require special packaging during transportation, we will carry out more delicate packaging. For example, retinal needs to be stored at -20 °C, so we choose cold chain transportation during transportation; deoxyarbutin will change color during transportation, so we will Vacuum packing of deoxyarbutin
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller
Year Established:
2020
Total Annual:
10000000-30000000
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Xi 'an Shilin Biotechnology Co., Ltd.is a tech-nical production enterprise specializing in thedevelopment, production and sales of plantextracts and effective ingredients of naturalproducts. &nbs... Xi 'an Shilin Biotechnology Co., Ltd.is a tech-nical production enterprise specializing in thedevelopment, production and sales of plantextracts and effective ingredients of naturalproducts. &nbs...
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