Abstract
In this study, we investigated the effect of DBD plasma at atmospheric pressure on membrane permeability, potential membrane and cytoplasmic free calcium concentration inSaccharomyces cerevisiae. S. cerevisiaecells were treated with DBD plasma for 0, 1, 2, 3, 4 and 5 min and then subjected to various analyses before the commencement of fermentation or at the middle (9 h) and end (21 h) stages of fermentation. The results show that compared to non-treated cells, cells treated with plasma for 2-5 min show significant increase in membrane potential, while cells treated for 2-4 min show significant increase in membrane permeability prior to fermentation. Plasma-treated cells also show increased cytoplasmic free Ca2+that depends on plasma treatment time, with the highest increase, 35%, observed for 5-min treatment time. However, at the middle (9 h) and end (21 h) stages of fermentation, these changes become insignificant compared to the control.
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