Talk:Yeast
From Academic Kids
Does the temperature of the yeast and glucose solution increase during fermentation if in absence of oxygen?
Hello, anyone there?
- Oxygen is required for yeast to grow because it needs to breath. (or so i have been told) however, if you restrict the presence of oxygen, the sugers get turned into carbon dioxied which when your making wine, tends to make bottles or corks explode. usualy when making wine, if you cork it, the suger tends to turn into carbon dioxied, and then if you open the cork to air it every day. you will get a sparkling wine because (I assume) the carbon dioxied becomes bound to the water for lack of an exit.
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yeast query
what do "obligately arerobic" and "facultatively fermentative" mean?
I know obligately aerobic means it must have oxygen to do its job. Dunno about the other.
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Yeast and light
Does yeast need light to carry out their life activities? How do I develop a hypothesis?
- 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.
