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单词 surface yeast
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surface yeast
Modern science distinguishes two kinds of yeast, surface yeast or top yeast (German oberhefe) and under yeast, sediment yeast, or bottom yeast (German unterhefe), the former propagated by buds, the latter by spores, of the fungus Saccharomyces cerevisiæ. The yeast of beer is used medicinally as an antiseptic and stimulant in low fevers, and as an application to ulcers.extracted from yeastn.
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更新时间:2024/12/23 3:40:47