during baking, the products of fermentation will swell and smells depending on its degree of fermentation
it grows bigger
In most cases, the high temperature will cause the yeast to die, resulting in a stalled fermentation. Too much dead yeast can lead to an awful tasting brew and should be avoided at all costs.
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water vaporizes before itemscan be sanitized
water vaporizes before itemscan be sanitized
If the temperature is too low, the yeast will remain dormant. If the temperature becomes too hot, the yeast organisms will be overwhelmed and killed before they can respire.
Yeast needs an appropriate temperature, water, and sugar to be active. If it does not have those three things, it will be inactive.
Yeast needs a warm temperature to grow. The best temperature for proofing the yeast and rising the bread (or other yeast baked foods) is about 110 degrees Fahrenheit. If it's too hot, it will kill the yeast, and if it's too cold, it will retard or prevent the yeast from growing.
The ideal temperature for yeast growth is 100 to 115 degrees F, but for leavening purposes, the ideal temperature is 80 to 95 degrees F. If the yeast grows too quickly, it will produce large bubble pockets in the bread. Yeast begins to die at 120 degrees F. So it's important to let your yeast dough rise in a spot where the temperature is stable. The cooler the temperature, the slower the yeast grows. It will grow in the refrigerator, but very slowly. I don't know the minimum temperature for it to grow.
Yeast contain enzymes which catalyze (speed up) the rate of chemical reaction and works best at an optimum temperature. If the temperature is too high, the enzymes will be denatured and if the temperature is too low, the enzymes will become inactive so in both cases, the enzymes would not work. In baking, the enzyme in the yeast is used to help convert sugar into an alcohol and carbon dioxide. The carbon dioxide rises to 'inflate' the dough, hence giving the bread or the baked product a fluffy and spongy texture (like how you see bread get inflated in the oven). And as for the alcohol, since it gets evaporated easily, will be evaporated off. The yeast will die due to the overwhelming heat in the oven. Hence if the water for mixing yeast is too high or low, the enzymes in the yeast cannot work and you won't get the soft, springy texture in your bread.
Too much sugar will act against the yeast, so if you add too much sugar you will have a lower alcohol halt. Homemade wine does use yeast, only beer does
No; it is too high of a temperature.
Yes, which is why wine and beer brewers must make sure the wort is not too hot before adding the yeast.