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Understanding the responses of Saccharomyces cerevisiae yeast strain during dehydration processes using synchrotron infrared

Abstract

For the first time, synchrotron infrared was performed on yeast during dehydration processes in real time with simultaneously controlling relative humidity and temperature. This leaded us to investigate the biochemical modification in relation to dehydration of Saccharomyces cerevisiae. The correlation between hydration level and yeast survival was observed. Following test conditions, the modification of protein structure was observed. However, no evident modification of lipid composition according to dehydration was obtained. Furthermore, the results showed that the medium rich in nutriment and glutathione precursor can improve yeast survival during dehydration at 45 °C. This could be related to the high relative amounts of CH3 methyl groups in lipid composition assigned to low lipid oxidation level in this case. Our work demonstrated the feasibility of using S-FTIR for investigating yeast responses to dehydration processes in real time. This method can be used for understanding effect of dehydration/rehydration on biochemical modification of yeast.

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Publication details

The article was received on 13 Feb 2017, accepted on 21 Jul 2017 and first published on 26 Jul 2017


Article type: Paper
DOI: 10.1039/C7AN00257B
Citation: Analyst, 2017, Accepted Manuscript
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    Understanding the responses of Saccharomyces cerevisiae yeast strain during dehydration processes using synchrotron infrared

    T. D. NGUYEN, S. Guyot, C. Pénicaud, S. Passot, C. Sandt, F. Fonseca, R. Saurel and F. Husson, Analyst, 2017, Accepted Manuscript , DOI: 10.1039/C7AN00257B

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