Characterization of Starch-Utilizing Yeast Saccharomycopsis fibuligera Isolated from Nuruk | ´©·�8·κ��� ºи®µ� ��ºд�»� ȿ¸� Saccharomycopsis fibuligera ±����� »�0Ư¼º
2014
Choi, D.H., Kangwon National University, Chuncheon, Republic of Korea | Park, E.H., Kangwon National University, Chuncheon, Republic of Korea | Kim, M.D., Kangwon National University, Chuncheon, Republic of Korea
A number of Saccharomycopsis fibuligera strains that can hydrolyse and utilize starch as a carbon source were isolated from nuruk, a traditional Korean starter for rice wine fermentation, and their specific growth rates on starch-containing medium were compared to choose the prominent strain. S. fibuligera strain MBY1320 showed a higher growth rate at 42¡� than that of strain S. fibuligera KCTC7806, indicating that S. fibuligera MBY1320 has more thermo-tolerant machinery for starch hydrolysis and utilization than KCTC7806. Although the activity of ¥� -amylase at 30¡� was significantly lower for S. fibuligera MBY1320 than KCTC7806 (3,812.5 U vs. 14,878.5 U), S. fibuligera MBY1320 showed a much higher glucoamylase activity at 42¡� than S. fibuligera KCTC7806 (5,048.9 U vs. 13,152.3 U). Thus, a new S. fibuligera strain, with a higher starch-hydrolysing activity at elevated temperatures than that of other types of strain, this study reports.
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