Fermentation Lab Movie

A simple demonstration on the fermentation of sucrose and flour by yeast.

0:00 Fermentation Lab description and setup
5:00 Make Hypotheses
5:14 Show Results
6:20 Explanation of Results

[lindseymao]

Thanks!! I'm using this during the COVID19 shutdowns for my class :D

[teamwarriorsharsh]

Take you for explaining very clearly and energetic way

[dinololic]

Can someone explain to me where the foam comes from? And why does the sugar produce more foam than flour? Did the experiment earlier today, and the sugar produced quite a lot of CO2, and foam aswell, the flour did also procude only slightly less CO2 (we measured balloons), but had no foam what so ever, we had the yeast mixtures in water for 10 minutes.

[Doughnutchef]

If you combined flour and sugar, the yeast would process the sugar 1st until its supply is exhausted, then and only then would it feed on the maltose in the flour.

[aliciagarcia]

Why is the balloon in the flask that was boiled sucked in?

[lissaldana]

we love your videos..please make more!!!

[mominahussain]

Wait would yeast undergo fermentation even if there is oxygen present in the conical flasks? Because I read if there is oxygen present, then the yeast will only undergo fermentation if the sugar substrate is in excess? Is this true? Nice video btw :)

[justinhundley]

this will help my yields! Thanks science teacher dude. Shall I send you any samples?

[jocelynquintana]

What sugar was yeast best able to utilize for energy production?

[marxiewasalittlegirl]

Nicely done, I needed it for my chemistry project.

[adenawong]

Thank you, this video is amazing. Allow me to share it

[shantelramdial]

What enzyme in the yeast was responsible for carrying out fermentation?

[anniebehm]

how much water should i add to the yeast and why. i really need to know why it is for lab

[amazingactions]

How did each setup or treatment ended after 24 hours? Explain the principles behind each setup’s result.

[kadidiat]

Thank you for your video, what gaz is collecting in the fermentation tube ?

[artistarmygrv]

What if you don’t have a hot pan can you put it on a stove / electric stove

[igrewold]

Does yeast eat/consume ?
Is it similar to table sugar ?

[seyiolufolabi]

Could you use a gas syringe instead of the balloons?

[itsmefaith]

I have an idea of what it might of been but what was the control?

[patrickhaimbe]

Sir how much baker's yeast do you need for 150g of starch plus 1L of water?