Puas yog Bacillus subtilis ferment mannitol?
Puas yog Bacillus subtilis ferment mannitol?

Video: Puas yog Bacillus subtilis ferment mannitol?

Video: Puas yog Bacillus subtilis ferment mannitol?
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Thaum lub Bacillus subtilis raug cais tawm ntawm Mannitol Ntsev Agar phaj, xim ntawm lub phaj kuj hloov ntawm liab mus rau daj. Bacillus subtilis tsis muaj peev xwm ferment mannitol thiab tseem lub Mannitol xeem tau txais txiaj ntsig zoo.

Ua kom pom qhov no, Bacillus subtilis puas tuaj yeem ferment lactose?

B . subtilis yog cov kab mob aerobic tab sis muaj peev xwm loj hlob hauv cov xwm txheej anaerobic, thiab muaj qhov kub zoo tshaj plaws ntawm kev loj hlob ntawm 30-39 degrees Celsius. B . subtilis tuaj yeem ferment qabzib, sucrose, tab sis tsis yog lactose.

Ib tug kuj yuav nug, cov kab mob dab tsi tuaj yeem ferment mannitol? Yog hais tias ib tug kab mob muaj peev xwm ferment mannitol, ib tug acidic byproduct yog tsim uas yuav ua rau cov phenol liab nyob rau hauv lub agar tig daj. Feem ntau pathogenic staphylococci cov tsos mob , zoo li Staphylococcus aureus , yuav ferment mannitol. Feem ntau tsis-pathogenic staphylococci cov tsos mob yuav tsis ferment mannitol.

Ib tug kuj nug, puas yog Bacillus cereus ferment mannitol?

Mannitol tsis yog fermented los ntawm cais yog tias kev loj hlob thiab ib puag ncig nruab nrab yog eosin liab. cereus colonies feem ntau yog lecithinase-zoo thiab mannitol - tsis zoo ntawm MYP agar.

Puas yog Bacillus subtilis muaj oxidase?

Gram-positive endospore-forming kab mob Bacillus subtilis muaj Nyob rau hauv aerobic tej yam kev mob, ib tug branched ua pa system muaj xws li ib tug quinol oxidase ceg thiab ib cytochrome oxidase ceg. Lub kaw lus xaus nyob rau hauv ib qho ntawm plaub lwm lub davhlau ya nyob twg oxidases.

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