L-Cysteine Hydrochloride Anhydrous

The anhydrous hydrochloride salt of L-Cysteine, a conditionally essential sulfur-containing amino acid. Used in bakery dough conditioning, pharmaceutical applications including expectorants, and as a precursor for the antioxidant glutathione.

White crystalline powder with characteristic faint sulfurous odor. Highly water-soluble.

We supply food-grade and pharmaceutical-grade L-Cysteine HCl Anhydrous from manufacturers in China holding ISO, Halal, Kosher and other certifications relevant to the product and production.

Common market grades include Standard Food Grade (FCC compliant 98.5 percent), Pharmaceutical Grade meeting BP/USP/EP/JP specifications, Cysteine HCl Monohydrate (the alternative hydrated form), and N-Acetyl-L-Cysteine (NAC, the pharmaceutical derivative).

Bulk and reduced-MOQ shipments. Batch-level COA covering assay, specific rotation, chloride content, heavy metals, and microbiology.

L-Cysteine is a conditionally essential sulfur-containing amino acid that the body produces from methionine but which becomes essential when methionine intake is restricted. The amino acid contains a thiol (-SH) group that is the basis for both its bakery functionality and its biological role as a precursor for glutathione.

Industrial production proceeds by either microbial fermentation using engineered Escherichia coli strains (the dominant modern route) or by acid hydrolysis of keratin from human hair or animal feathers (the traditional route, which raises kosher and halal compliance considerations).

Recognized as a permitted food ingredient by the U.S. FDA, the European Food Safety Authority, and equivalent regulators worldwide. Listed in BP, USP, EP, and JP pharmacopoeias.

The bakery application is unique to cysteine: the thiol group reduces disulfide bonds in wheat gluten, weakening the gluten network and allowing faster mixing and easier dough handling. Industrial bread bakeries dose cysteine at 30 to 90 mg per kg flour to reduce mixing time by 25 to 50 percent.

Strategic positioning splits between bakery dough conditioning (the unique high-volume application), pharmaceutical use (the highest unit value), and dietary supplements positioned for glutathione and detoxification claims.

• Bakery dough conditioning: bread, pizza, and pastry dough; reduces mixing time and improves dough handling
• Pharmaceutical applications: expectorant formulations (mucolytic effect), N-acetyl-cysteine precursor manufacturing
• Dietary supplements: glutathione-support and detoxification-positioned formulations
• Beauty-from-within supplements: hair, skin, and nail support
• Pharmaceutical antidote: acetaminophen overdose treatment
• Food flavor enhancer: meat-flavor and savory-taste applications
• Cosmetic and personal-care: hair-care and skincare applications