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(R)-2-Amino-3 -mercaptopropionic Acid Food Grade Amino Acids L-Cysteine C3H7NO2S

WUHAN SOLEADO TECHNOLOGY CO.,LTD.
WUHAN SOLEADO TECHNOLOGY CO.,LTD.
City: Wuhan
Province/State: Hubei
Country/Region: China
Tel: 86-27-83341481

(R)-2-Amino-3 -mercaptopropionic Acid Food Grade Amino Acids L-Cysteine C3H7NO2S

Place of Origin : China
Brand Name : Soleado
Model Number : 52-90-4
MOQ : 25kg
Price : Latest USD/kg
Packaging Details : 25kg/paper drum
Delivery Time : 7days after confirmation
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram, ESCROW
Supply Ability : 25tons/month
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(R)-2-Amino-3 -mercaptopropionic Acid Food Grade Amino Acids L-Cysteine C3H7NO2S
L-Cysteine
Abbreviation: L-Cys
CAS Number: 52-90-4
Chemical Name: (R)-2-Amino-3 -mercaptopropionic Acid
Chemical Formula: C3H7NO2S
Molecular Weight: 121.1600
Solubility: Freely soluble in water
Property: White crystals or crystalline powder; characteristic taste
L-cysteine is recognized as a conditionally essential amino acid. Under normal physiologic conditions, the body can produce sufficient levels of L-cysteine. However, preterm infants cannot synthesize L-cysteine in the body; therefore it must be obtained via the diet.

Applications:
Cysteine, mainly the L-enantiomer, is a precursor in the food, pharmaceutical, and personal care industries. One of the largest applications is the production of flavors. For example, the reaction of cysteine with sugars in a Maillard reaction yields meat flavors.L-cysteine is also used as aprocessing aid for baking.
In the field of personal care, cysteine is used for permanent wave applications predominantly in Asia. Again the cysteine is used for breaking up the disulfide bonds in the hair's keratin.
Cysteine is a very popular target for site-directed labeling experiments to investigate biomolecular structure and dynamics. Maleimides will selectively attach to cysteine using a covalent Michael addition. Site-directed spin labeling for EPR or paramagnetic relaxation enhanced NMR also uses cysteine extensively.
In a 1994 report released by five top cigarette companies, cysteine is one of the 599 additives to cigarettes. Like most cigarette additives, however, its use or purpose is unknown.[22] Its inclusion in cigarettes could offer two benefits: Acting as an expectorant, since smoking increases mucus production in the lungs; and increasing the beneficial antioxidant glutathione (which is diminished in smokers).

Specifications:


Item

Specification( AJI92)

Results

Identification

Infrared absorption

Conforms

Stata of solution

(transmittance)

Clear and colorless

Not less than 95.0%


99%


Specific rotation [α]D20

+8.3°to +9.5°

+9.1°


Chloride(Cl)

Not more than 0.04%

Not more than 0.04%

Ammonium (NH4)

Not more than 0.02%

Not more than 0.02%


Sulfate(SO4)

Not more than 0.030%

Not more than 0.030%


Iron(Fe)

Not more than 10ppm

Not more than 5ppm


Arsenic (As2O3)

Not more than 1ppm


Not more than 1ppm


Other amino acids

Chromatographically

Not detectable

Conforms


Heavy metals(Pb)

Not more than 10ppm

Not more than 5ppm


Loss on drying


Not more than 0.50%

0.2%

Residue on ignition

(sulfated)


Not more than 0.10%

0.05%

Assay

99.0% to 101.0%

99.7%


PH

4.5 to 5.5

4.7



Product Tags:

amino acid food

      

amino acids food

      
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(R)-2-Amino-3 -mercaptopropionic Acid Food Grade Amino Acids L-Cysteine C3H7NO2S Images

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