Strains of yeast for bread-making and novel strains of yeast thus prepared
US4396632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1981 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Dec 23, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N1/18
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A complete and reproducible process for producing novel strains of yeast, comprises making a first screening test and at least one other screening test selected from a group of screening tests which do not resort to any measurement of gas release, selecting by means of said first and at least one other said screening test the desired strains from a group of diploid strains prepared previously either by hybridation, or by mutation of existing strains. The tests are as follows: A first test consists of measuring the average multiplication coefficient of a given strain by following the optical density variation of a standard medium seeded by a suspension of cells obtained from this strain. A second test consists of measuring in the same manner the average multiplication coefficient of the said strain in the presence of an inhibitor acid added to the standard medium. A third test consists of measuring the maltose adaptation of said strain in the presence of glucose by determining the amount of maltose subsisting in a standard medium after a known amount of glucose added to this medium has been completely consumed. A fourth test consists of measuring the invertase content of said strain…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.