Video: Puas yog Bacillus subtilis acid sai sai?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rau kev sib piv, daim duab sab laug yog ntawm Bacillus subtilis gram zoo, tsis yog- kua qaub - ceev bacilli . smegmatis, ob qho tib si yog kua qaub - ceev tab sis qhia qhov tsis muaj zog gram tshuaj tiv thaiv.
Raws li kev sib raug zoo, dab tsi yog acid ceev cell phab ntsa?
Cov kua qaub - ceev stain yog ib qho xim sib txawv siv los txheeb xyuas kua qaub - ceev Cov kab mob xws li cov tswv cuab ntawm genus Mycobacterium. Acid - ceev Cov kab mob yog cov yam ntxwv zoo li siv quav ciab, ze li impermeable cell phab ntsa ; Lawv muaj mycolic kua qaub thiab cov roj ntau ntau kua qaub , waxes, thiab complex lipids.
Tsis tas li ntawd, Bacillus subtilis tuag ntawm qhov kub li cas? Nyob rau hauv tsab ntawv ceeb toom no, peb qhia tau hais tias txias shock pretreatment ntawm sporulating B . subtilis cov hlwb ua kom cov kab mob ua kom sov ntawm cov spores tsim los ntawm cov hlwb kom tua hluav taws kub ntawm 85 thiab 90 ° C, qhov qub pretreatment ua rau cov spores uas tsis tshua muaj cua sov dua li kev tswj kom tua hluav taws kub ntawm 95 thiab 100 ° C.
Kuj tseem yuav paub, Bacillus subtilis puas tsim kev puas tsuaj rau tib neeg?
B . subtilis suav hais tias yog ib yam kab mob benign vim nws tsis muaj cov yam ntxwv uas ua rau muaj kab mob. Nws tsis yog xav txog kab mob los yog toxigenic rau tib neeg , tsiaj txhu, lossis nroj tsuag. Qhov muaj feem cuam tshuam nrog kev siv cov kab mob no hauv cov chaw fermentation yog tsawg.
Cov kab mob dab tsi yog acid ceev zoo?
Acid-Fast Bacterial Cell Envelope Acid-fast bacteria muaj xws li cov Mycobacteria thiab ib co ntawm cov Nocardia . Cov kua qaub-ceev staining cov cuab yeej tshwm sim los ntawm muaj cov membrane glycolipids thiab cov saw ntev heev 2-alkyl-3-hydroxy fatty acids (mycolic acids) khi rau peptidoglycan.
Pom zoo:
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