Yeast population dynamics in four Malaysian spontaneous cocoa pulp fermentations.

<p>Box fermentation 1 (B1, October 2011), heap fermentation 1 (H1, October 2011), box fermentation 2 (B2, January 2012) and heap fermentation 2 (H2, January 2012). Total yeast count (left axis) is indicated as a black thick line (top of the graph). Temperature (right axis) is indicated as a dashed black line. The dashed arrows indicate when the yeast cell count rises to or drops below the detection limit [1.5 10⁴ colony forming units (CFU) g⁻¹]. Only the four “core” yeast species are shown independently. The relative contribution of a yeast species (indicated by the colors) to the population at a certain time point is represented as the fraction (%) of the total yeast count. Note that the scale for the total yeast count (left) is logarithmic, whereas the relative fraction of each yeast species in the population is presented as fraction of the total population and thus represented on a linear scale. Solid arrows indicate turning. The second turning (96 h) of B2 and H2 is not shown.