Fig. 1From: Changes in lipid metabolism convey acid tolerance in Saccharomyces cerevisiaeComparison of the lipidome profiles of the yeast strains during aerobic culture without and with the addition of acetic, formic, levulinic and cinnamic acids, at five different growth phases, at pH 5.0. a STEs, b TAGs, c ES, d PA, e CL, f PE, g PC, h PS and i PI. The growth phases are defined as: phase 0, the exponential growth phase before acid addition; phase 1, the adaptation phase on glucose after acid addition; phase 2, the exponential growth phase on glucose; phase 3, the adaptation phase on ethanol; phase 4, the exponential growth phase on ethanol; and Phase 5, the stationary phase. Level change = (lipid content of phase 1–5—lipid content of phase 0)/lipid content of phase 0Back to article page