EVALUATION OF VIABILITY AND BIOLOGICAL ACTIVITY OF BAKERY AND WINE YEAST AFTER LONG-TERM PRESERVATION

2022

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DOI 10.53729/mv-as.2022.01.03
Data confidence 70 medium
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Abstract

В работе представлены результаты проверки жизнеспособности и активности хлебопекарных и винных дрожжей, хранящихся разными способами в коллекции научно-производственного Центра микробиологии и вирусологии. Все исследуемые штаммы хлебопекарных дрожжей, за исключением Schizosaccharomyces pombe, в разной степени сохранили свою активность после длительного хранения. Наибольшая подъемная сила наблюдалась у культур Saccharomyces cerevisiaeРаса Щелковская и Saccharomyces cerevisiaeРаса «Сочи Б» при хранении под минеральным маслом. Из всех видов хранения наилучшим для винных дрожжей являются методы пересева и хранения в 10% растворе глицерина при низких температурах. При этих способах хранения сохраняются высокая жизнеспособность и бродильная активность. При хранении под минеральным маслом активность дрожжей снижается. The article presents the results of testing the viability and activity of baker's and wine yeast stored in various ways in the collection of the Research and Production Center of Microbiology and Virology. All observed strains of baker's yeast except of Schizosaccharomyces pombe, retained their activity to varying degrees after long-term preservation. The highest lifting force was observed in cultures of Saccharomyces cerevisiae Rasa Schelkovskaya and Saccharomyces cerevisiae Rasa «Sochi B» when preserved with mineral oil. From the all preservation methods, the best one for wine yeast is subculture and storage in a 10% glycerol solution at low temperatures. With these preservation methods, high viability and fermentation activity are maintained. When stored with mineral oil, yeast activity is reduced.