Talk:Yeast
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Does the temperature of the yeast and glucose solution increase during fermentation if in absence of oxygen???
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[edit] Physiology of Yeast- Possible copyright issues
I have made some minor changes to the Physiology section of yeast. The tone sounds like it might have been copied from some sort of childrens website. I have removed the signature "by James Boyd Dunaway" for GFDL reasons and if this content requires this signature for copyright reasons I suggest a total re-write of this 1st paragraph of that section. Re-reading it, there would seem to be straying off topic of physiology and giving a full description of yeast. -alex- 15:25, 28 October 2006 (UTC)
"Facultatively fermentative" is not normally used to describe microbial physiology. Rather, the term employed is "facultatively anaerobic". This indicates that the organism is capable of generating metabolic energy through substrate level phosphorylation - generally known as glycolysis.
[edit] Yeast and light
Does yeast need light to carry out their life activities?
No. Yeasts are not photosynthetic. They are saphrophytic.
How do I develop a hypothesis?
Start with observations - draw generalizations from the evidence that can be tested experimentally.
- To the best of my knowledge, yeast does not photosynthesize, and does not require light. Bread will rise very happily in the dark. If anything, direct sunlight is probably damaging to yeast. --PJF (talk) 01:02, 8 Apr 2005 (UTC)
- from baking bread as a child and brewing beer as an adult, i seem to remember that yeast is damaged by light.
- Yeasts are loosely connected fungus colonies in which any individual cell has a natural tendency of "deconnecting" from the colony and float freely. This feature is very useful in winemaking/brewing, as the yeast colony will migrate and expand, processing the whole volume of liquid. Hugo Dufort 07:40, 27 September 2006 (UTC)
Wow nevermind, kinda a blow to my pride but Yeast are indeed part of kingdom fungi. Strange, I guess now that I think about it fungus-like protista and normal fungi are more similar that I stated.- Moshe Constantine Hassan Al-Silverburg 06:25, 17 November 2005 (UTC) DUH!!!!!!!
[edit] History and Nature?
This article should have more information on the history and natural condition of yeast because that is what I came here to find out about. I am surprised that such a major thing as yeast has such a small article. What does natural yeast look like, where and how does it grow/live? How was it originally "domesticated" and how has it been cultured over the ages?
[edit] Cleanup
I have removed some unnecessary language info from this article. Ajfweb 10:30, 29 November 2006 (UTC)
