Reference: Tornai-Lehoczki J and Dlauchy D (2000) Delimination of brewing yeast strains using different molecular techniques. Int J Food Microbiol 62(1-2):37-45

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Abstract


In general, the genetic characteristics, the phenotype and the microbial purity of the production brewing yeast strains are among the most important factors in maintaining a consistently good quality of products. Analysis of restriction fragment length polymorphism (RFLP) patterns of 18S rRNA-coding DNA was investigated to group ale and lager strains. All production brewing yeast strains showed the same RFLP pattern as the type strain and synonym type strains of S. cerevisiae, and were quite different from the type and synonym type strains of S. pastorianus. Based on these data, all production brewing yeast strains investigated in this study appeared to belong to S. cerevisiae. Electrophoretic karyotyping and random amplified polymorphic DNA (RAPD) analysis appeared to be suitable methods for distinguishing not only the type and synonym type strain of S. cerevisiae and S. pastorianus, but also the ale and the lager strains.

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Tornai-Lehoczki J, Dlauchy D
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