Wholesale Food Grade Powder Cystinel Amino Acid L-Cystine

• Customization: Available
• Type: Cystine
• Chemical Character: Acidity
• Model NO.: L-Cystine
• Storage Method: Normal
• Nutrient Composition: Amino Acid
• Color: White
• Resource: Chemosynthesis
• Grade: Feed Additives
• Shelf Life: >12 Months
• Transport Package: Bag
• Specification: 99%
• Trademark: zhuofeng
• Origin: China
• HS Code: 293090909
• Production Capacity: 10000tons

Product Description

L-cystine is the L-enantiomer of the sulfur-containing amino acid cystine. It has a role as a flour treatment agent, a human metabolite, a Saccharomyces cerevisiae metabolite and a mouse metabolite. It is a cystine, a L-cysteine derivative and a non-proteinogenic L-alpha-amino acid. It is a conjugate acid of a L-cystine anion. It is an enantiomer of a D-cystine. It is a tautomer of a L-cystine zwitterion. Not considered one of the 20 amino acids, Cystine is a sulfur-containing derivative obtained from oxidation of cysteine amino acid thiol side chains. It functions as an antioxidant and protects tissues against radiation and pollution, slowing the aging process. It also aids protein synthesis. Cystine is abundant in many proteins of skeletal tissues and skin, and found in digestive enzymes chromotrypsinogen A, papain, and trypsinogen. (NCI04)

Items	Standard	Result
Appearance	White or off-white crystalline powder	Conform
Assay	98.5~101.0%	99.69%
Specific rotation[a]^20D	-215~-225^o	-219.37^o
Loss on drying	≤0.20%	0.15%
Residue on ignition	≤0.10%	0.05%
Chloride(Cl^-)	≤0.02%	<0.02%
Sulfate(SO4^2-)	≤0.02%	<0.02%
Heavy metal(Pb)	≤10ppm	<10ppm
Arsenic(As)	≤1ppm	<1ppm
Iron(Fe)	≤10ppm	<10ppm
Other amino acid	Chromatographically not detectable	Not detected
Conclusion	This product meets the requirements of USP34.

1. Cystine is a crystalline, sulfur-containing amino acid, formed from two molecules of the amino acid cysteine.
2. It can be converted to cysteine by reduction and was discovered in 1810 but was not recognized as a component of proteins until 1899, when it was isolated from animal horn - it is particularly abundant in skeletal and connective tissues, hair and digestive enzymes.
3. L- Cystine helps strengthen the immune system, reduce damage from free-radicals, repair RNA-DNA in the cells and assimilation of vitamin B6. L-Cystine is closely related to the amino acid, L-Cysteine.
4. L-Cystine aids in preventing the side effects of chemotherapy and radiation.
5. It increases L-Glutathione levels in the lungs, liver, kidney and bone marrow.
6. L-Cystine also has an anti-aging effect on the body which can reduce the accumulation of age spots.

 

1. Inside lining plastic bag, middle vellum bag, skin chemical fibre weaving bag, packaging of 25kg.
2. Inside lining plastics bag, skin complex container bag, 25kg of packaging.
3. Inside lining plastics bag, skin chemical fibre weaving bag, 1000kg of packaging.

1, DHL Express, FEDEX and EMS for quantity less than 50KG, usually called as DDU service; 2, Sea shipping for quantity over 500KG; and air shipping is available for 50KG above;
3, For high value products, please select air shipping and DHL express for safe;
4, Please confirm if you can make the clearance when goods reach your customs before placing an order, for buyers from Mexico, Turkey, Italy, Romania,Russia, and other remote area