Factory Supply 99% L-Cystine Raw Materials
What is it? — Introduction to Cystine
Cystine is a natural sulfur-containing amino acid and one of the essential building blocks of proteins.It is naturally abundant in keratin, found in human hair, nails, skin, and animal hair (such as human hair and wool), hooves, and horns. It is also abundant in high-protein foods such as eggs, meat, dairy products, legumes, and some nuts. In the human body, it can be converted from another amino acid—cysteine. Currently, cystine has evolved from a basic amino acid into a core functional raw material spanning multiple high-value fields such as medicine, health care, food, and beauty.
YTBIO provides you with 98%+ high-purity cystine raw materials to support your health product development and production.
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Items |
Specifications |
Results |
|
Appearance |
White crystal or crystalline powder |
Conforms |
|
Identification |
Infrared absorption |
Conforms |
|
Specific Rotation [α]D20 |
-215°~ -225° |
-215.6° |
|
Loss on Drying |
NMT 0.3% |
0.20% |
|
Residue on Ignition |
NMT 0.10% |
0.07% |
|
Chloride(Cl) |
NMT 0.02% |
Conforms |
|
Sulfate (SO4) |
NMT 0.02% |
Conforms |
|
Heavy Metals |
NMT10ppm |
Conforms |
|
Organic Volatile Impurities |
Meet the Requirement |
Conforms |
|
Chromatographic Purity |
Meet the Requirement |
Conforms |
|
Assay |
98.5% ~ 101.5% |
99.50% |
|
Storage Conditions :Store in cool & dry place. Do not freeze, Keep away from strong light and heat. |
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Efficacy and Functions of Cystine
Beauty and Health
Hair and Nails: As a major component of keratin, cystine directly participates in the construction of hair and nails, helping to enhance strength, resilience, and healthy shine.
Skin Health: Cystine participates in maintaining the skin barrier function and promotes skin tissue repair.
Antioxidant and Detoxification
Antioxidant: Cystine is a raw material for the synthesis of glutathione, the most important antioxidant in the body. By converting to glutathione, it helps scavenge free radicals, protects cells from oxidative damage, and delays aging.
Liver Detoxification: Cystine actively participates in the liver's detoxification process, helping to neutralize (e.g., drug and alcohol metabolites), playing a vital supporting role in maintaining liver health.
Immune Regulation and Repair
Promoting Hematopoiesis: Cystine can stimulate the proliferation of white blood cells and enhance the function of the immune system.
Accelerating Repair: Cystine participates in protein synthesis and collagen formation, helping to accelerate wound healing, postoperative recovery, and tissue regeneration.
Other Functions
Cystine helps the body metabolize and excrete excess metallic elements such as copper, preventing their accumulation and toxicity in the body.
Application Areas – Uses of Cystine
Health Supplements and Functional Foods
Cystine is widely used as a nutritional supplement for preventing and treating hair loss, improving fragile hair, promoting hair growth, and strengthening nails.
Cystine, as a precursor to glutathione, is used in health products that enhance antioxidant capacity and support liver detoxification.
Cystine is used as an amino acid supplement in specialty medical foods and infant formula.
Food Industry
Cystine can be added to food to supplement amino acid nutrition.
Cystine and its derivatives (such as cysteine) can be used as dough improvers, fruit juice flavor preservatives, and natural pigment stabilizers.
Cosmetics and Personal Care Products
Cystine is added to skincare products, utilizing its antioxidant, moisturizing, and skin-repairing properties, for anti-aging, brightening, and repairing products.
Cystine is used as an active ingredient in shampoos, conditioners, and serums that claim to repair damage and strengthen hair.
Please feel free to contact us for more technical information and pricing details.
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