Maltotriose utilization by industrial Saccharomyces strains: characterization of a new member of the alpha-glucoside transporter family.

ABSTRACT: Maltotriose utilization by Saccharomyces cerevisiae and closely related yeasts is important to industrial processes based on starch hydrolysates, where the trisaccharide is present in significant concentrations and often is not completely consumed. We undertook an integrated study to better understand maltotriose metabolism in a mixture with glucose and maltose. Physiological data obtained for a particularly fast-growing distiller's strain (PYCC 5297) showed that, in contrast to what has been previously reported for other strains, maltotriose is essentially fermented. The respiratory quotient was, however, considerably higher for maltotriose (0.36) than for maltose (0.16) or glucose (0.11). To assess the role of transport in the sequential utilization of maltose and maltotriose, we investi

SUBMITTER: Salema-Oom M 

PROVIDER: S-EPMC1214619 | biostudies-literature | 2005 Sep

REPOSITORIES: biostudies-literature