L-Cysteine hydrochloride anhydrous CAS: 52-89-1 99% Dawb crystalline hmoov
| Catalog Number | xwm 90319 |
| Khoom npe | L-Cysteine hydrochloride anhydrous |
| CAS | 52-89-1 : kuv |
| Molecular Formula | C3H7NO2S · HCl |
| Molecular Luj | 157.62 ib |
| Cov ntaub ntawv khaws cia | 2 txog 8 ° C |
| Harmonized tariff Code | 29309016 ib |
Khoom Specification
| Qhov tshwm sim | Dawb crystalline hmoov |
| Assay | 99% |
| Kev sib hloov tshwj xeeb | +5.6 - 8.9 |
| Xaus | AJI92 qib |
| Cov hlau hnyav | <10ppm |
| Kev txheeb xyuas | Infrared nqus spectrum |
| pH | 1.5-2 |
| Poob rau ziab | <2.0% |
| Residue ntawm Ignition | <0.1% |
| Lwm cov amino acids | Chromatographically tsis ntes tau |
| Arsenic (raws li As 2O3) | <1 ppm |
Nws qhov kev pheej hmoo loj tshaj plaws rau Clostridium difficile kab mob (CDI) yog kev siv tshuaj tua kab mob vim muaj kev cuam tshuam ntawm qhov sib npaug ntawm tus tswv tsev plab microbiota.Txhawm rau khaws cov kab mob probiotics uas muaj txiaj ntsig zoo thaum lub sijhawm kho kab mob, kev siv cov tshuaj molecules nrog kev xaiv tshuaj tua kab mob ua kom muaj txiaj ntsig zoo los ntawm kev xaiv tshem tawm C. difficile.Ib qho ntawm lawv yog cov nroj tsuag alkaloid 8-hydroxyquinoline (8HQ), uas tau pom tias xaiv inhibit clostridia yam tsis muaj kev tawm tsam bifidobacteria.Kev xaiv tshuaj tua kab mob feem ntau yog kuaj los ntawm cov txheej txheem kab lis kev cai ntawm tus kheej cov kab mob.Txawm li cas los xij, qhov kev txwv tseem ceeb ntawm cov txheej txheem no yog qhov tsis muaj peev xwm piav qhia qhov sib txawv ntawm kev loj hlob ntawm ntau hom kab mob hauv kev sib koom ua ke hauv tib qhov kev sim.Nyob rau hauv txoj kev tshawb no, peb muab fluorescent nyob rau hauv situ hybridization thiab ntws cytometry los piav txog cov kev hloov nyob rau hauv active thiab non-active hlwb ntawm ib tug sib xyaw kab lis kev cai tsim los ntawm opportunistic pathogen C. diff icile CECT 531 thiab cov txiaj ntsig Bifidobacterium longum subsp.ntev CCMDMND BL1 tom qab raug rau 8HQ.Nws tau pom tias tsis muaj 8HQ, qhov kev faib ua feem ntawm ob hom kab mob yuav luag sib npaug, oscillating ntawm 22.7 thiab 77.9% thaum lub sij hawm lapse ntawm 12 h, whereas nrog 8HQ qhov feem ntawm active C. difficile poob tom qab 4 h, thiab persisted tsuas yog nyob nruab nrab ntawm 8.8. thiab 17.5%.Hauv qhov sib piv, kev loj hlob bifidobacterial tsis cuam tshuam los ntawm 8HQ.Cov txiaj ntsig ntawm txoj kev tshawb fawb no tau pom qhov kev xaiv inhibitory nyhuv ntawm 8HQ ntawm clostridial thiab bifidobacterial kev loj hlob zoo, thiab lub peev xwm ntawm qhov sib xyaw no rau kev txhim kho cov tshuaj xaiv los tswj CDIs.
