Definitions
from The Century Dictionary.
- noun The Saccharomyces cerevisiæ, a minute plant producing alcoholic fermentation in saccharine liquids; also, any one of several other species of the genus Saccharomyces. See
yeast , 1 (with cut).
Etymologies
Sorry, no etymologies found.
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Examples
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It is well seen in the yeast-plant, where the cell bulges at one side, and this bulge becomes larger until it is nipped off from the parent by contraction at the point of junction, and is then an independent plant.
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It is the microscopic yeast-plant which, by seizing on certain atoms of the molecule, liberates the remaining atoms in the form of carbonic-acid and alcohol, thus effecting fermentation; it is another microscopic plant -- a bacterium, as Devaine had christened it -- which in a similar way effects the destruction of organic molecules, producing the condition which we call putrefaction.
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As, for example, among the plants we take the yeast-plant, a Protococcus, a common mould, a Chara, a fern, and some flowering plant; among animals we examine such things as an
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As, for example, among the plants we take the yeast-plant, a Protococcus, a common mould, a Chara, a fern, and some flowering plant; among animals we examine such things as an
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In the first edition, the lower forms of life were first dealt with; from simple cells -- amoeba, yeast-plant, blood-corpuscle -- the student was taken through an ascending series of plants and of animals, ending with the frog or rabbit.
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It was not the living yeast-plant, but the dead or dying parts of it, which, assailed by oxygen, produced the fermentation.
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The brewer deliberately sows the yeast-plant, which grows and multiplies in the wort as its proper soil.
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Does the yeast-plant stand alone in its power of provoking alcoholic fermentation?
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They are the lactic and putrid ferments, as the yeast-plant is the alcoholic ferment of sugar.
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In no other way can the yeast-plant obtain the gas necessary for its respiration than by wrenching it from surrounding substances in which the oxygen exists, not free, but in a state of combination.
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