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Investigation of weak organic acid tolerance mechanisms by lipidomic profiling of Saccharomyces cerevisiae and Zygosaccaromyces bailii

Lina Lindberg (Institutionen för kemi- och bioteknik, Industriell Bioteknik ) ; Lisbeth Olsson (Institutionen för kemi- och bioteknik, Industriell Bioteknik ) ; Maurizio Bettiga (Institutionen för kemi- och bioteknik, Industriell Bioteknik )
Nordic Yeast Research Community Symposium, Gothenburg, Sweden August 30 and 31, 2012 (2012)
[Konferensbidrag, poster]

During pretreatment of lignocellulose raw material, compounds such as furaldehydes, phenolics and weak organic acids, severely inhibiting Saccharomyces cerevisiae, are released. Decrease of intracellular pH after diffusion through the plasma membrane is thought to be one of the effects mediating the cellular toxicity of weak organic acids. The aim of the present study is to investigate the relationship between plasma membrane composition and acid tolerance, in order to develop a strategy for engineering a S. cerevisiae strain more tolerant to acetic acid. Zygosaccharomyces bailii, a well-known food spoilage yeast, is highly tolerant to acetic acid and will be used as a model for weak organic acid tolerance. A complete lipidomic profiling of S. cerevisiae and Z. bailii in the presence and absence of acetic acid will be carried out using LC-MS/MS. Similarities and differences in the two profiles will be correlated with acid tolerance.

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Denna post skapades 2013-01-14. Senast ändrad 2015-03-30.
CPL Pubid: 170577


Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Industriell Bioteknik (2008-2014)



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