MacConkey Agar

[@trish2642]

ur kind of saving my life in micro rn and i am really grateful! thank u

[@scarlettzhao8408]

Omg, I love you so much. My teacher made them DRY and you made them interested!

[@BiologyProfessor]

Cool, happy to help! :)

[@sanaamoha5645]

This was very well explained and informative thank you so much Dr

[@BiologyProfessor]

Thanks :)

[@janaan6973]

Thanks so much Professor!

[@AeraiRC]

Very simple accurate information.

[@ramankhatale8285]

Thank you so much. You made it so easy to understand.

[@BiologyProfessor]

I love to hear that. Thank you for telling me! :)

[@ramankhatale8285]

@@BiologyProfessor :)

[@blessingchiamaka1542]

Can you make a video like this on CLED AGAR as well please

[@prathapagiriharish2687]

Nice explanation 👍

[@loveforbioinfo]

So overall, if I have a mixture of bacteria and I n eed to isolate only the Klebsiella pneumonia, how do I do that? Would MacConkey agar plates with lactose be enough to select and differentiate K. pneumonia from rest of the microbes?

[@BiologyProfessor]

Not necessarily. K. pneumoniae appears as a mucoid lactose fermenter on MacConkey agar, but other types of bacteria could be similar. There may be other media, like the one here, better for definitive identification. www.ncbi.nlm.nih.gov/pmc/articles/PMC273960/

[@morgan2852]

Ya this was absolutely fantastic.

[@BiologyProfessor]

Thank you!

[@janiegonzalez5261]

Thank you!

[@Garcia....]

Thank you for sharing 👍 to helpful for me.

[@LeGiTBeAsT223]

whats the mechanism for how crystal violet inhibits gram-positive growth? I tried searching for answers but couldn't find much

[@BiologyProfessor]

The CV forms a bulky complex with the peptidoglycan layer, cross-linking a lot of it tightly together and interfering with function. It is explained a bit more here: onlinelibrary.wiley.com/doi/abs/10.1111/j.2042-7158.1967.tb09550.x

[@ايهاببيانو]

Thank you for this great lesson ❤️

[@BiologyProfessor]

You are welcome. Thanks for watching!

[@hemo2458]

that is very fantastic

[@mustaphamouallif2767]

Hi ! great videos. Thanks. Would you tell me please why we are talking about Fermentation "and not respiration" when we describe the Macconkey utilisation of lactose ? especially because of its occuring in an aerobic enviroment which is the surface of the agar. Thanks so much in advance for your reply

[@BiologyProfessor]

Many bacteria still use fermentation even in the presence of oxygen, these are called aerotolerant anaerobes and include lactobacilli and streptococci. This type of agar changes color with the production of those fermentation products. en.m.wikipedia.org/wiki/Aerotolerant_anaerobe

[@nooralmoswy7347]

Wow very amazing , thank alot dr💝

[@dayanacarrillo3479]

All the MacConkey plates I have ever used are light pink not pale yellow..

[@Andrea-yd2ji]

This helped a lot! You’re great! Thanks! :-)

[@ericklopezmarquez6551]

Awesome video, help my a lot

[@mariamroy]

hi! can anyone please tell me if MacConkey Agar is chemically defined or chemically complexed media? from what I have seen, it has defined chemical components and based of that I think its chemically defined. but there are many internet sources which say it is chemically complexed. I would highly appreciate if someone could guide me in this regard,.

[@BiologyProfessor]

I believe it is chemically complex. It is complex or undefined due to the digests of animal tissue, and bile salts in the medium.

[@biomagnet6664]

Thank you ma'am....

[@biomagnet6664]

I have many doubts in my mind, but you have solved them all...

[@BiologyProfessor]

I’m glad! 😃

[@nuranbaabbad8828]

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[@abdalkahar22]

can you explain chocolate agar , please ?

[@BiologyProfessor]

I’ve added it to my list. :)

[@abdalkahar22]

Biology Professor Thank you 🙏

[@rashadali4225]

no offense , you should probably make a video how did you manage to loose weight

[@BiologyProfessor]

Keto diet ;)

[@dr.maytar]

Hi my name is mehmet i am a phd student in Turkey i have a youtube channel like yours I watch your videos that give me information that i need

[@pategustavo4392]

Please do a video illustrating the complete chemical mechanism of the Lowry protein assay (room temperature method)

[@BiologyProfessor]

Thanks for the suggestion! I try to do videos that haven't already been done by another channel and it looks like there are several videos on the Lowry method: kzbin.info?search_query=Lowry+protein Let me know if you have other suggestions!

[@pategustavo4392]

@@BiologyProfessor the top result was not exclusive to only Lowry method so it got kinda confusing and I am not that smart already

[@develstudyworld332]

Good evening ma'am

[@BiologyProfessor]

Hi :)

[@vishnusingh-zo7cu]

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[@Diogenesthedog0]

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[@vishnusingh-zo7cu]

What's the use of knowledge in front of godess

[@अर्जुन-ह8श]

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[@amitmazumdar9031]

You have gone slim...😅

[@shahrukh4787]

[@shahrukh4787]

i was here to update my knowledge , but thing which is updated is my Crush