L-cysteine Base |52-90-4
Nkọwa ngwaahịa:
Cysteine bụ kristal na-acha ọcha ma ọ bụ ntụ ntụ kristal, soluble na mmiri, ntakịrị ísì, nke na-adịghị edozi na ethanol, na-adịghị edozi na ihe mgbaze organic dị ka ether.Ebe mgbaze 240 ℃, usoro monoclinic.Cysteine bụ otu n'ime amino acid nke nwere sọlfọ, nke bụ amino acid na-adịghị mkpa.
N'ime akụkụ ahụ, a na-eji hydroxyl oxygen atom nke serine dochie sọlfọ atom nke methionine, a na-emepụta ya site na cystathionine.
Site na cysteine, enwere ike ịmepụta glutathione.glycerol.Cysteine dị acid kwụsiri ike, ma ọ na-adị mfe oxidized na cystine na-anọpụ iche na alkaline ngwọta.
Mmetụta nke L-cysteine Base:
Ọ nwere njikọ n'ime ahụ, wdg.
Iji gbochie ma gwọọ mmerụ ahụ radieshon nke ọma.
Ọ na-ejigide ọrụ nke sulfhydrylase dị mkpa na mmepụta keratin nke protein anụ ahụ, yana mgbakwunye sọlfọ dị iche iche iji nọgide na-enwe metabolism nkịtị nke anụ ahụ ma na-achịkwa melanin n'okpuru nke mkpụrụ ndụ pigmenti na-emepụta na oyi akwa kacha ala nke epidermis.Ọ bụ ezigbo ihe ịchọ mma na-acha ọcha eke.
Mgbe ọ bụla mbufụt ma ọ bụ ihe nfụkasị ahụ mere, sulfydrylase dị ka cholphosphatase na-ebelata, na mgbakwunye L-cysteine nwere ike ịnọgide na-arụ ọrụ nke sulfydrylase ma melite mgbaàmà akpụkpọ ahụ nke mbufụt na allergies.
Ọ nwere mmetụta nke igbari keratin, ya mere ọ dịkwa irè maka ọrịa anụ ahụ na keratin hypertrophy.
Ọ nwere ọrụ nke igbochi ịka nká.
Ngosipụta nka na ụzụ nke ntọala L-cysteine :
Ihe nyocha Nkọwapụta
Ọdịdị kristal ọcha ntụ ntụ ma ọ bụ kristal ntụ ntụ
Identification infrared absorption ụdịdị dị iche iche
Ntụgharị pụrụ iche[a]D20° +8.3°~+9.5°
Ọnọdụ ngwọta ≥95.0%
Ammonium (NH4) ≤0.02%
Chloride (Cl) ≤0.1%
Sulfate (SO4) ≤0.030%
Iron (Fe) ≤10ppm
Ọla dị arọ (Pb) ≤10ppm
Arsenic ≤1ppm
Ọnwụ na nkụ ≤0.5%
Ihe fọdụrụ na mgbanye ≤0.1%
Nyocha 98.0 ~ 101.0%
PH 4.5-5.5
