Polyploid baker's yeasts having a low temperature inactivation p

Chemistry: molecular biology and microbiology – Treatment of micro-organisms or enzymes with electrical or... – Modification of viruses

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4352552, 426 62, C12N 1501, C12N 118, A21D 200, A21D 804

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active

053994922

ABSTRACT:
Polyploid yeasts having an lti property are obtained by sporulating a starting polyploid strain of Saccharomyces cerevisiae, selecting at least one segregant having an lti property, backcrossing the selected segregant at least once with another segregant having an opposite mating type, selecting at least two backcross segregants having an lti property and opposite mating types, crossing the selected backcross segregants at least once, and selecting a polyploid strain having a growth potential, an lti property, and an ability to raise a dough.

REFERENCES:
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patent: 4547374 (1985-10-01), Nakatomi et al.
patent: 4643901 (1987-02-01), Jacobson et al.
Hara, S. et al., "The Breeding of Cryophilic Killer Wine Yeasts," Agric. Biol. Chem., 45(6), 1327-1334, 1981.
Spencer, J. F. T. et al., "Genetic Manipulation of Non-Conventional Yeasts by Conventional and Non-Conventional Methods," J. Basic Microbiol. 28(5), 321-333, 1988.
Snow, R., "Genetic Improvement of Wine Yeast," Yeast Genet: Fundam. Appl. Aspects, pp. 439-459, Spencer J. F. T. et al. (eds); Springer: Secaucus, N.Y.; 1983.

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