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Influence of Ethyl Caproate on the Size of Lipid Vesicles and Yeast Cells

Aomori Prefectural Industrial Technology Research Center, Hirosaki Industrial Research Institute, 1-1-8 Ougi-Machi, Hirosaki City, Aomori 036-8104, Japan
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Biomimetics 2020, 5(2), 16; https://doi.org/10.3390/biomimetics5020016
Received: 9 March 2020 / Revised: 22 April 2020 / Accepted: 23 April 2020 / Published: 27 April 2020
Ethyl caproate (EC) is a key flavor component of sake. Recently, in sake brewing, an effort has been underway to increase the content of aromatic components such as EC. However, the function of EC in yeast cells remains poorly understood. Therefore, we investigated the effects of EC using cell-sized lipid vesicles. We found that vesicle size decreases in a concentration-dependent manner when EC is contained in lipid vesicles. Furthermore, yeast experiments showed that a strain producing high quantities of EC in its stationary phase decreased in size during EC production. Given caproic acid’s (CA) status as the esterification precursor of EC in yeast, we also compared lipid vesicles containing CA with those containing EC. We found that CA vesicles were smaller than EC vesicles of the same concentration. These results suggest that EC production may function apparently to maintain cell size. View Full-Text
Keywords: microscopic observation; lipid vesicles; ethyl caproate; size distribution; yeast; Saccharomyces cerevisiae microscopic observation; lipid vesicles; ethyl caproate; size distribution; yeast; Saccharomyces cerevisiae
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Yoda, T.; Ogura, A.; Saito, T. Influence of Ethyl Caproate on the Size of Lipid Vesicles and Yeast Cells. Biomimetics 2020, 5, 16.

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