FIG. 1.
pH and growth of three yeasts cultivated separately (open symbols) and in coculture (closed symbols) over time. (a) □, K. marxianus alone; (b) ○, D. hansenii alone; (c) ▵, Y. lipolytica alone; (d) ▪, K. marxianus; •, D. hansenii; and ▴, Y. lipolytica in coculture. pH levels. Error bars represent standard deviations calculated on the average values of six determinations.