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 nka nke L-cysteine Base:
| Ihe nyocha | Nkọwapụta |
| Ọdịdị | kristal ọcha ntụ ntụ ma ọ bụ ntụ ntụ kristal |
| njirimara | Ụdị nnabata infrared |
| 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% |
| Ígwè (Fe) | ≤10ppm |
| Ọla dị arọ (Pb) | ≤10ppm |
| Arsenic | ≤1pm |
| Ọnwụ na ihicha | ≤0.5% |
| Ihe fọdụrụ na mgbanye ≤0.1% | |
| Nyocha | 98.0 ~ 101.0% |
| PH | 4.5-5.5 |
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