using a microscope

Share your experiences of using brewing yeast.
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Gurgeh

using a microscope

Post by Gurgeh » Fri Dec 14, 2007 9:37 am

I've got my hogsback yeast sample, a 400x (back-lit) microscope and two slides in a cup of water, straight out the kettle.

so what sort of thing should i look out for?

(yes, 'yeast' would be the obvious answer!)

steve_flack

Post by steve_flack » Fri Dec 14, 2007 9:50 am

Yeast are the round things. Bacteria are very very much smaller and quite hard to see (not sure you'll see them at 400x).

Chappie519

Post by Chappie519 » Fri Dec 14, 2007 10:41 am

I think you'll be alright with the 400x lens, pretty sure its what i used the other week for looking at yeast samples.

Gurgeh

Post by Gurgeh » Fri Dec 14, 2007 11:21 am

hmmm...

filthy equipment unfortunately, but could see yeast hanging around in groups of 2-7. hardly saw any single cells so take that as encouraging.

obviously the more i looked the more the slide dried out until i couldn't make anything out.

I think i saw some bacteria - it looked like a + sign made up of half a dozen particles that looked like cooked long-grain rice. the whole assemblage was smaller than a yeast cell. Only saw one of these things.

lots of things that looked like flakes - impossible to focus on satisfactorily. would that be protein, dust or undissolved DME?

it would be interesting to see the same starter again in a couple of days, but sadly it's the last day of term and i'm on holiday until the new year
:lol:

delboy

Post by delboy » Fri Dec 14, 2007 2:27 pm

Gurgeh wrote:hmmm...

filthy equipment unfortunately, but could see yeast hanging around in groups of 2-7. hardly saw any single cells so take that as encouraging.

obviously the more i looked the more the slide dried out until i couldn't make anything out.

I think i saw some bacteria - it looked like a + sign made up of half a dozen particles that looked like cooked long-grain rice. the whole assemblage was smaller than a yeast cell. Only saw one of these things.

lots of things that looked like flakes - impossible to focus on satisfactorily. would that be protein, dust or undissolved DME?

it would be interesting to see the same starter again in a couple of days, but sadly it's the last day of term and i'm on holiday until the new year
:lol:
The bacteria would only really be visible if they was a decent sized infection, they will appear as tiny barely visible black dots that seem to be moving about by brownian motion.
At least that what they look like when our tissue culture cells get infected

The flakes are probably coagulated proteins i would have thought

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