Screening and tolerance analysis of yeast on Kurla pear peel
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1.College of Food Science, Shihezi University, Shihezi 832000, China;
2.College of Information Science and Technology, Shihezi University, Shihezi 832000, China
Using excellent Korla pears as raw material, 100 strains of yeasts were isolated from Korla pears by YEPD medium. The strains were identified according to the characteristics of colony and morphological analysis and the homology analysis of ITS gene sequence. Results showed that Hanseniaspora uvarum and Pichia kudriavzevii were confirmed and then their acid, sugar, ethanol and sulfur dioxide tolerance were tested. The results showed that for strain D4, the highest sugar, pH, ethanol concentration and sulfur dioxide tolerances were 18%, 3.0, 9% and 0.20%, respectively. For strain 13, the tolerances mentioned above were 14%, 3.5, 9% and 0.15%, respectively.
YAO Xiaoruining1, GAO Feifei1, WANG Bin1, XIAO Jing2, JIA Chenkun1, SHI Xuewei1*.
Screening and tolerance analysis of yeast on Kurla pear peel[J]. China Brewing, 2017, 36(6): 67-71 https://doi.org/10.11882/j.issn.0254-5071.2017.06.014
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