Video: Cov khoom xyaw xaiv hauv MacConkey Agar yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
MacConkey Agar. Qhov nruab nrab no yog ob qho tib si xaiv thiab sib txawv. Cov khoom xyaw xaiv yog cov cov kua ntsev thiab dye, siv lead ua violet uas cuam tshuam kev loj hlob ntawm cov kab mob Gram-positive. Qhov sib txawv ntawm cov khoom yog cov lactose.
Ua qhov no hauv kev txiav txim siab, vim li cas thiaj yog tus cim xim siv hauv MacConkey Agar?
Tso cai rau cov kua qaub nyob hauv qhov muaj cov lactose fermenters, uas cuam tshuam nrog Neutral Red Dye . Nws yog siv kom cais tawm thiab sib txawv cov tswv cuab ntawm Enterobacteriaceae raws li lub peev xwm ferment ferment lactose.
Ib sab saum toj no, puas muaj cov kab mob Gram zoo tuaj yeem loj hlob ntawm MacConkey Agar? Lawv suav nrog ua MacConkey ua xaiv qhov nruab nrab haum rau cais tawm Gram tsis zoo kab mob . Cell phab ntsa ntawm Cov kab mob gram zoo tsis tiv thaiv ob qho tib si ntawm ob qhov sib txuas los ntawm nkag mus rau hauv cov cell. Ob qho tshuaj sib xyaw no yog cov tshuaj tua kab mob, yog li lawv muaj Cov kab mob gram zoo tuaj yeem ua tau tsis loj hlob.
Ib yam li ntawd, koj yuav nug, puas Staphylococcus aureus loj hlob ntawm MacConkey Agar?
ManConkey agar yog kev xaiv thiab qhov sib txawv agar nruab nrab uas muaj ntsev ntsev, lactose thiab cov xim siv lead ua violet uas tau paub los txwv qhov kev loj hlob ntawm cov kab mob Gram zoo. Staphylococcus ua Gram zoo cocci yog li tsis tuaj yeem ua loj hlob hauv qhov nruab nrab no.
Vim li cas MacConkey Agar daj?
Tag nrho cov lactose fermenters nyob MacConkey ua tseem ferment sorbitol. Cov kab mob loj tuaj ntawm cov ntsev mannitol agar fermenting mannitol, raws li qhia los ntawm kev hloov pauv mus rau daj ntawm qhov nruab nrab. Qhov ntsuas pH hauv mannitol ntsev agar yog phenol liab, uas yog tig rau daj thaum nruab nrab yog acidified los ntawm cov khoom ntawm fermentation.
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