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

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...

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Bibliographic Details
Published in:Biomimetics (Basel, Switzerland) Switzerland), 2020-04, Vol.5 (2), p.16
Main Authors: Yoda, Tsuyoshi, Ogura, Akira, Saito, Tomoaki
Format: Article
Language:English
Subjects:
ethyl caproate
lipid vesicles
Lipids
microscopic observation
Physiological aspects
Saccharomyces cerevisiae
size distribution
yeast
Yeast fungi
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Summary: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.
ISSN:2313-7673
2313-7673
DOI:10.3390/biomimetics5020016