Video: Cov kab mob dab tsi loj hlob ntawm eosin methylene blue agar?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
EMB yog qhov sib txawv microbiological nruab nrab, uas me ntsis inhibits kev loj hlob ntawm Gram-zoo kab mob thiab muab cov xim qhia qhov sib txawv ntawm cov kab mob uas ferment lactose (piv txwv li, E. coli cov ) thiab cov uas tsis yog (piv txwv li, Salmonella , Shigella).
Zoo sib xws, dab tsi loj hlob ntawm eosin methylene xiav agar?
Eosin methylene xiav agar ( EMB ) yog ib qho kev xaiv thiab sib txawv nruab nrab siv los cais cov quav coliforms. Eosin Y thiab methylene xiav yog pH qhov taw qhia dyes uas ua ke los tsim cov xim daj tsaus ntuj nag lossis daus ntawm pH qis; lawv kuj pab inhibit qhov kev loj hlob ntawm feem ntau Gram zoo kab mob.
Ib yam li ntawd, puas E coli loj hlob ntawm EMB agar? Tsuas yog cov kab mob gram-negative xwb loj hlob ntawm EMB agar . Cov kab mob gram-positive raug txwv los ntawm cov dyes eosin thiab methylene blue ntxiv rau agar . Vim muaj zog fermention ntawm lactose thiab tsim tawm ntawm cov kua qaub ntau, cov cheeb tsam ntawm Escherichia coli cov pom tsaus nti thiab xiav-dub nrog cov xim ntsuab xim hlau.
Tsuas yog li ntawd, hom kab mob twg loj hlob ntawm EMB agar?
Qee hom ntawm Salmonella thiab Shigella yuav tsis loj hlob ntawm EMB Agar. Ib txhia gram - cov kab mob zoo, xws li enterococci , staphylococci cov tsos mob , thiab cov poov xab yuav loj hlob ntawm qhov nruab nrab no thiab feem ntau yog tsim kom pom tseeb thaj chaw. Cov tsis muaj kab mob, tsis muaj cov kab mob lactose-fermenting yuav loj hlob ntawm qhov nruab nrab no.
E coli loj hlob rau agar hom twg?
Xaiv cov xov xwm loj hlob rau E. coli
| Khoom No. | Lub Npe |
|---|---|
| 70143 | Mac Conkey Agar No. 1 |
| 19352 | Mac Conkey Agar No. 1, Vegitone |
| 94216 | MacConkey Agar nrog Crystal Violet, Sodium Chloride thiab 0.15% Bile Salts |
| M8302 | MacConkey Agar nrog Crystal Violet, Sodium Chloride thiab 0.15 % Bile Salts |
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Lub luag haujlwm ntawm eosin thiab methylene xiav hauv EMB Agar yog dab tsi?
Eosin methylene blue agar (EMB) yog ib qho kev xaiv thiab sib txawv nruab nrab siv los cais cov quav coliforms. Eosin Y thiab methylene xiav yog pH qhov taw qhia dyes uas ua ke los ua cov xim liab tsaus nti ntawm pH tsawg; lawv kuj pab inhibit qhov kev loj hlob ntawm feem ntau Gram zoo kab mob