| Product Name | L-CYSTEINE Powder |
| Grade | Food Grade |
| Certification | HACCP/ISO 22000/HALAL/IS0 9001 |
| Specification | 99%Pure |
| Appearance | White Powder |
| Delivery Time | 7 days |
| Nutrient Content | Vegan, Gluten-Free, Non-GMO, Natural |
| Shelf Life | 2 Years |
| Storage | Cool Dry Place |
L-Cysteine (CAS: 52-90-4) is a high-purity white crystalline powder with the molecular formula C₃H₇NO₂S and molecular weight 121.16 g/mol. As a sulfur-containing amino acid, L-Cysteine serves as a crucial building block for proteins and a key precursor to glutathione, the body's master antioxidant.
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Exceptional Purity and Quality Assurance
L-Cysteine Powder is renowned for its high purity (typically ≥99%) and rigorous quality control. Manufacturers adhere to strict standards, including FDA 21 CFR 172.320/184.1271 compliance for food-grade applications and EU Regulation 1334/2008 certification for food additives . Pharmaceutical-grade products meet USP and EP standards, ensuring consistency in physical properties (e.g., white crystalline appearance, pH 4.5–5.5) and chemical composition (e.g., heavy metal content ≤10 ppm) . This purity is critical for applications requiring precision, such as injectable pharmaceuticals and premium cosmetics, where contaminants could compromise safety or efficacy .
Innovative Production Technologies
Advanced fermentation and enzymatic catalysis dominate modern production. For example, patented methods using Pseudomonas or Escherichia coli strains achieve high yields (e.g., ≥98% conversion of DL-ATC to L-cysteine) while minimizing waste and energy consumption . Companies like Wacker Chemie leverage plant-based fermentation to produce vegan L-Cysteine, aligning with clean-label trends and reducing reliance on animal-derived materials (e.g., hair or feathers) . Recent innovations include stable injectable formulations (e.g., US Patent 11,679,125) with controlled aluminum levels and dissolved oxygen, ensuring long-term stability for parenteral use .
Multifunctional Applications
L-Cysteine Powder’s sulfhydryl group (-SH) enables diverse uses:
Food Industry: As a dough conditioner, it improves gluten elasticity and fermentation efficiency in bread, reducing processing time by 20–30% . It also enhances savory flavors via the Maillard reaction and prevents browning in juices .
Pharmaceuticals: It supports glutathione synthesis, a critical antioxidant for liver detoxification and immune support. N-acetyl-L-cysteine (NAC), derived from L-Cysteine, is used clinically for acetaminophen overdose and respiratory conditions like COPD .
Cosmetics: In hair care, it breaks and reforms disulfide bonds in keratin, enabling permanent waving/straightening with reduced damage . In skincare, it promotes collagen synthesis and reduces hyperpigmentation .
Biotechnology: It aids protein folding in recombinant protein production, essential for biopharmaceuticals like monoclonal antibodies .
Sustainability and Ethical Sourcing
Plant-based fermentation (e.g., from soy or sugarcane) reduces environmental impact compared to harsh chemical synthesis or animal-derived sources .
Waste reduction: Enzymatic processes generate minimal byproducts, while microbial strains are engineered for efficient substrate utilization .
Vegan certifications (e.g., Non-GMO, Kosher, Halal) meet demand for cruelty-free ingredients in food, supplements, and cosmetics .
Regulatory Compliance and Global Accessibility
L-Cysteine Powder meets international standards (FDA, EU, Fami-QS), facilitating seamless entry into global markets. Suppliers offer flexible packaging (1 kg foil bags to 25 kg drums) and logistics solutions (express/sea/air shipping), ensuring reliable distribution . Products like those sold on Amazon emphasize cGMP compliance, reassuring buyers of quality and safety .
Established in 2006, we are a certified OEM/ODM manufacturer specializing in premium health supplements. Holding NSF-GMP,HACCP, ISO 22000, USDA Organic, EU Organic, Halal, and FDA certifications, our facility integrates advanced technologies for tablet, capsule, powder, gummy, and softgel production. From formulation to packaging, we provide full-cycle solutions with strict quality protocols, including raw material traceability, third-party lab testing, and Halal-compliant dedicated lines. Serving global markets including North America, Europe, and Asia, we prioritize sustainability through eco-friendly processes and transparent labeling. With 19+ years of expertise, we empower brands to deliver scientifically validated, certification-backed nutraceuticals tailored to diverse regulatory and cultural requirements 
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