Qhov ntsuas hauv MacConkey Agar yog dab tsi?
Qhov ntsuas hauv MacConkey Agar yog dab tsi?

Video: Qhov ntsuas hauv MacConkey Agar yog dab tsi?

Video: Qhov ntsuas hauv MacConkey Agar yog dab tsi?
Video: Tiv Kev Txomnyem ~ 3-19-2022 || Dr. Xeev Ntxawg Xoom 2024, Lub Xya hli ntuj
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Siv. Siv nruab nrab liab pH qhia , agar qhov txawv ntawm cov kab mob Gram-negative uas tuaj yeem ferment qab zib lactose (Lac+) los ntawm cov uas tsis tuaj yeem (Lac-). Qhov nruab nrab no tseem hu ua "qhov ntsuas nruab nrab" thiab "tsawg xaiv nruab nrab". Muaj cov kua tsib ntsev inhibits swarming los ntawm Proteus hom.

Kuj paub, MacConkey agar xeem yog dab tsi?

MacConkey Agar (MAC) yog qhov kev xaiv thiab qhov sib txawv nruab nrab tsim los cais tawm thiab sib txawv nkag mus raws li lawv lub peev xwm ferment ferment lactose. Cov ntsev ntsev thiab siv lead ua violet tiv thaiv kev loj hlob ntawm cov kab mob Gram zoo. Lactose muab qhov chaw ntawm cov carbohydrates yooj yim, tso cai rau sib txawv.

Tom qab ntawd, lo lus nug yog, Salmonella zoo li MacConkey li cas? Kev txhais lus txhais rau MacConkey Agar Lactose fermenting strains loj hlob li liab los yog liab thiab tej zaum yuav nyob ib puag ncig los ntawm ib cheeb tsam ntawm cov kua qaub precipitated bile. Lactose tsis-fermenting hom, xws li Shigella thiab Salmonella yog xim tsis muaj xim thiab pob tshab thiab feem ntau ua tsis hloov cov tsos ntawm nruab nrab.

Kuj paub, dab tsi kab mob loj hlob ntawm MacConkey Agar?

Nws yog tsim los ntawm cov kua tsib ntsev-nruab nrab liab-lactose agar ntawm MacConkey . Crystal violet thiab ntsev ntsev tau suav nrog MacConkey ua los tiv thaiv kev loj hlob ntawm Gram-zoo kab mob thiab fastidious Gram-tsis zoo kab mob , xws li Neisseria thiab Pasteurella.

Puas yog Staphylococcus loj hlob ntawm MacConkey Agar?

STAPHYLOCOCCUS - GRAM POSITIVE BACTERIA yog li nws ua tsis tau loj hlob ntawm macconkey agar ..

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