L-cysteine Base | 52-90-4 ib
Product Description:
Cysteine yog dawb crystalline hmoov los yog crystalline hmoov, soluble nyob rau hauv dej, me ntsis tsw, insoluble nyob rau hauv ethanol, insoluble nyob rau hauv organic solvents xws li ether. Melting point 240 ℃, monoclinic system. Cysteine yog ib qho ntawm cov sulfur-muaj cov amino acids, uas yog cov amino acid tsis tseem ceeb.
Nyob rau hauv lub cev, sulfur atom ntawm methionine yog hloov nrog hydroxyl oxygen atom ntawm serine, thiab nws yog synthesized los ntawm cystathionine.
Los ntawm cysteine, glutathione tuaj yeem tsim tawm. glycerol. Cysteine acid ruaj khov, tab sis yooj yim oxidized rau cystine hauv nruab nrab thiab alkaline daws.
Kev ua tau zoo ntawm L-cysteine Base:
Nws muaj cohesion nyob rau hauv lub cev, thiab lwm yam.
Tiv thaiv kom zoo thiab kho kev raug mob hluav taws xob.
Nws tswj cov kev ua ntawm sulfhydrylase tseem ceeb hauv keratin tsim cov proteins ntawm daim tawv nqaij, thiab pab pawg sulfur los tswj cov metabolism hauv cov tawv nqaij thiab tswj cov hauv paus melanin uas tsim los ntawm cov xim xim hauv cov txheej txheem qis tshaj ntawm cov epidermis. Nws yog ib qho zoo tagnrho natural whitening cosmetic.
Thaum twg o lossis ua xua tshwm sim, sulfydrylase xws li cholphosphatase txo qis, thiab L-cysteine supplementation tuaj yeem tswj cov kev ua ntawm sulfydrylase thiab txhim kho daim tawv nqaij cov tsos mob ntawm o thiab ua xua.
Nws muaj cov nyhuv ntawm kev ua kom keratin, yog li nws kuj tseem siv tau rau cov kab mob ntawm daim tawv nqaij nrog keratin hypertrophy.
Nws muaj kev ua haujlwm ntawm kev tiv thaiv kev laus laus.
Technical Indicators ntawm L-cysteine Base:
Cov khoom tsom xam Specification
Qhov tshwm sim Dawb crystals hmoov los yog crystalline hmoov
Kev txheeb xyuas Infrared absorption spectrum
Kev sib hloov tshwj xeeb [a]D20 ° + 8.3 ° ~ + 9.5 °
Kev daws teeb meem ≥95.0%
Ammonium (NH4) ≤0.02%
Chloride (Cl) ≤0.1%
Sulfate (SO4) ≤ 0.030%
Hlau (Fe) ≤10ppm
Cov hlau hnyav (Pb) ≤10ppm
Arsenic ≤1ppm
Poob ntawm ziab ≤0.5%
Residue ntawm ignition ≤0.1%
Kev ntsuas 98.0 ~ 101.0%
PH 4.5 ~ 5.5
