L-cysteine Base | 52-90-4
Tlhaloso ea Sehlahisoa:
Cysteine ke kristale e tšoeu kapa phofo ea crystalline, e qhibilihang ka metsing, e nkha hanyenyane, ha e qhibilihe ka har'a ethanol, ha e qhibilihe ka har'a metsoako ea tlhaho e kang ether. Melting point 240 ℃, tsamaiso ea monoclinic. Cysteine ke e 'ngoe ea li-amino acid tse nang le sebabole, e leng amino acid e seng ea bohlokoa.
Ka 'meleng, athomo ea sebabole ea methionine e nkeloa sebaka ke athomo ea oksijene ea hydroxyl ea serine, 'me e entsoe ka cystathionine.
Ho tsoa ho cysteine, glutathione e ka hlahisoa. glycerol. Cysteine ke acid e tsitsitseng, empa e na le oxidized habonolo ho cystine ka tharollo e sa nke lehlakore le ea alkaline.
Ho sebetsa ha L-cysteine Base:
E na le momahano 'meleng, joalo-joalo.
Thibela le ho phekola kotsi ea mahlaseli.
E boloka ts'ebetso ea sulfhydrylase ea bohlokoa tlhahisong ea keratin ea liprotheine tsa letlalo, 'me e tlatselletsa lihlopha tsa sebabole ho boloka metabolism e tloaelehileng ea letlalo le ho laola melanin e ka tlase e hlahisoang ke lisele tsa pigment karolong e tlase ea epidermis. Ke setlolo se setle haholo sa tlhaho se soeufatsang.
Nako le nako ha ho ruruha kapa ho kula ho etsahala, sulfydrylase e kang cholphosphatase e fokotsehile, 'me tlatsetso ea L-cysteine e ka boloka ts'ebetso ea sulfydrylase le ho ntlafatsa matšoao a letlalo a ho ruruha le allergy.
E na le phello ea ho qhibiliha keratin, kahoo e boetse e sebetsa bakeng sa mafu a letlalo a nang le keratin hypertrophy.
E na le mosebetsi oa ho thibela botsofali ba likokoana-hloko.
Matšoao a tekheniki a L-cysteine Base:
Ntho ea Tlhahlobo Tlhaloso
Ponahalo Likristale tse tšoeu phofo kapa phofo ea kristale
Identification Infrared absorption spectrum
Potoloho e khethehileng[a]D20° +8.3°~+9.5°
Boemo ba tharollo ≥95.0%
Ammonium (NH4) ≤0.02%
Chloride (Cl) ≤0.1%
Sulfate (SO4) ≤0.030%
Tšepe (Fe) ≤10ppm
Litšepe tse boima (Pb) ≤10ppm
Arsenic ≤1ppm
Tahlehelo ha o omisa ≤0.5%
Masalela a ho khantša ≤0.1%
Tekanyetso 98.0~101.0%
PH 4.5~5.5
