brew·er's yeast (br   rz)n. A yeast (genus Saccharomyces) used as a source of B-complex vitamins. |
brewer's yeast
[bro̅o̅′ərz]
Etymology: ME, brewen, to boil, yest, foam
a preparation containing the dried pulverized cells of a yeast, such as Saccharomyces cerevisiae, that is used as a leavening agent and as a dietary supplement. It is one of the best sources of the B complex vitamins and a rich source of many minerals and a high grade of protein.
brewer's yeast
a by-product of brewing. The yeast bodies of Saccharomyces cerevisiae are harvested and dried. It is an excellent source of vitamin B1 (thiamin) and protein. Often fed as a supplement to dogs and cats.
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