| Buchner extract | A cell-free extract of yeast, such as was prepared by Eduard and Hans Buchner and observed to catalyze alcoholic fermentation; this observation essentially eliminated "vitalism" as being responsible for biological chemical reactions and initiated the beginnings of modern biochemistry (enzymology). (05 Mar 2000) |
|---|---|
| cell-free extract | <cell culture> A liquid that is a mixture of the contents of a particular type of cell, sometimes the organelles are also filtered out of the liquid. (26 Mar 1998) |
| goulards extract | <medicine> An aqueous solution of the subacetate of lead, used as a lotion in cases of inflammation. Goulard's cerate is a cerate containing this extract. Origin: Named after the introducer, Thomas Goulard, a French surgeon. Source: Websters Dictionary (01 Mar 1998) |
| pollen extract | Liquid obtained by extracting the protein from the pollen of plants used for diagnostic testing or treatment. (05 Mar 2000) |
| hydroalcoholic extract | A solid extract obtained by extracting the soluble principles of the drug with alcohol and water, followed by evaporation of the solution. (05 Mar 2000) |
| equivalent extract | A fluidextract of the same strength, weight for weight, as the original drug. Synonym: valoid. (05 Mar 2000) |
| extract | <pharmacology> A concentrated preparation of a vegetable or animal drug obtained by removing the active constituents therefrom with a suitable menstruum, evaporating all or nearly all the solvent and adjusting the residual mass or powder to a prescribed standard. Extracts are prepared in three forms, semiliquid or of syrupy consistency, pilular or solid and as dry powder. Origin: L. Extractum (18 Nov 1997) |
| liquid extract | Pharmacopeial liquid preparation of vegetable drugs, made by percolation, containing alcohol as a solvent or as a preservative, or both, and so made that each milliliter contains the therapeutic constituents of 1 g of the standard drug that it represents. Synonym: liquid extract. (05 Mar 2000) |
| brewers' yeast | Yeast produced by Saccharomyces cerevisiae; a by-product from the brewing of beer. (05 Mar 2000) |
| chromosomes, yeast artificial | Chromosomes in which fragments of exogenous DNA ranging in length up to several hundred kilobase pairs have been cloned into yeast through ligation to vector sequences. These artificial chromosomes are used extensively in molecular biology for the construction of comprehensive genomic libraries of higher organisms. (12 Dec 1998) |
| wild yeast | Any of the uncultivated forms of yeast's, useless as ferments and sometimes pathogenic. (05 Mar 2000) |
| compressed yeast | The moist living cells of Saccharomyces cerevisiae combined with a starchy or absorbent base. (05 Mar 2000) |
| cultivated yeast | A form of yeast propagated by culture and used in breadmaking, brewing, etc. (05 Mar 2000) |
| primary dried yeast | A source of dried yeast; obtained from suitable strains of Saccharomyces cerevisiae grown in media other than those required for the production of beer. (05 Mar 2000) |
| syndrome, yeast | The yeast Candida has been thought to cause a syndrome with a number of non-specific problems including fatigue, loss of appetite, headache, short-attention span, depression and all manner of intestinal irregularities. There is no scientific evidence to support the existence of the yeast syndrome (also called the yeast connection). (12 Dec 1998) |