Carbohydrate (CHO) Fermentation [Durham Tube Test]

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[@MrLuigisBLOG]

You have saved my class grade with your videos. Thanks 🙏😊

[@madhavihullur]

I prepared this too with andrade's indicator

[@shubhamsoni590]

Sir, what are the conditions in which durum tube remains red and straight tube becomes yellow. Is this possible?

[@BrainQueen1]

What is the explanation for the scenario you gave where there can be red and yellow in the test tube? Can it be that the amount of carbon source you added is too much. So they will ferment some of it and then leave the other (which would be indicated by red)?

[@anurupesh5185]

Hi sir,
So the first tube showing yellow color without gas formation is negative for coliforms. Second tube is positive and the third one is negative. Pls reply.

[@dr.nabanitachakraborti9920]

good but not detail.include preparation and sterilization of this media.

[@kayreenanonuevo3463]

Hi professor, Im actually confuse. Anything in glucose, mannitol and sucrose that is yellow is positive? and anything color red is negative? am i right?

[@don.timeless4993]

So there is a way to ferment carbs in gluten free grains for keto/low carb diets?!

[@nepaligurlify]

Thank you :)

[@kayciewilliams4255]

Thank you 😩😩 I finally understand

[@aidencristiano3874]

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[@marlontristen2095]

@Aiden Cristiano Flixportal :D

[@aidencristiano3874]

@Marlon Tristen thank you, I signed up and it seems like they got a lot of movies there =) Appreciate it !!

[@marlontristen2095]

@Aiden Cristiano no problem =)

[@madhavihullur]

Phenol red (acidic - yellow colour), red means - not fermented.

[@caroljackson767]

Excellent video!

[@asutoshpadhy2]

Thank you sir you are a great teacher

[@CatalystUniversity]

Thank you; I appreciate it!

[@berkekurumanastrl578]

Thank you :)

[@jaslynlin4429]

is this same as oxidation fermentation test?

[@Babygirlrissa]

Than you this helped alot !

[@titoflash1212]

Thx

[@leolsified4189]

Aj college ...

[@DaltonsGigi]

Omg I love you ! You’re the best and made this makes sense. Better than the dumb lab manual & book I bought for my class. Especially explaining how the control tube could be red and the liquid inside the durham tube is yellow and it’s still negative!

[@angelinechristensen4863]

My microbiology professor says that yellow inside the Durham tube still indicates that fermentation has taken place. Although it is rare, sometimes the bacteria can get trapped inside the Durham tube. Following your rule that a mixed result with yellow inside the Durham tube indicates a negative result for the test led me down the incorrect path in determining an unknown bacterium. 😞

[@angelinechristensen4863]

My microbiology professor says that yellow inside the Durham tube still indicates that fermentation has taken place. Although it is rare, sometimes the bacteria can get trapped inside the Durham tube. Following your rule that a mixed result with yellow inside the Durham tube indicates a negative result for the test led me down the incorrect path in determining an unknown bacterium. 😞