A polygalacturonase activity has been detected in several yeast strain
s : saccharomyces cerevisiae and S. bayanus. This activity has been qu
antified for S. cerevisiae. A pectin methylesterase was detected in Ha
nseniaspora valbyensis, Pichia membranaefaciens, P. fermentans, Bretta
nomyces lambicus and Dekkera anomala.