Strain variability of <Emphasis Type="Italic">Irpex Lacteus</Emphasis> basidiomycetes in the synthesis of specific milk-clotting proteinases |
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Authors: | O V Chemeris V V Rashevskiy K A Galkova M I Boyko |
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Institution: | 1.Department of Plant Physiology, School of Biology,Donetsk National University,Donetsk,Ukraine |
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Abstract: | The ability to synthesize milk-clotting (rennet) proteinases was studied in eight strains of Irpex Lacteus basidiomycetes. It was found that the studied I. lacteus strains are characterized by different enzyme activities in their culture liquid. For I. lacteus strains 2425, 2426, and 2427, the maximum milk-clotting activity was detected during the exponential growth phase on the 15th day of cultivation on glucose–peptone medium. These I. lacteus strains are the most prospective milk-clotting enzyme producers for further research and practical application. I. lacteus strains 2421, 2422, 2423, 2424, and 2428 showed lower values of the enzyme activity and require additional research to determine the optimal culture conditions. |
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