Cellulase, polygalacturonase and β-galactosidase activity in ripening raspberry (Rubus caesius L.) fruit

Activities of the cell wall degrading enzymes cellulase, polygalacturonase, and β-galactosidasewere determined on unripe, semi-ripe, and ripe raspberry (Rubus caesius L.) fruit. The enzymeactivity, measured as μmoles of released product.g-1 of fruit h-1 indicated the presence ofpolygalacturonase, cellulose, and β-galactosidase in raspberry fruit. Enhanced fruit ripening wasreflected by increased values for cellulase, polygalacturonase abd β- galactosidase activity. Inraspberry cellulose, polygalacturonase, and βgalactosidase appear to be involved in fruitsoftening during unripe to the ripe stages.

Keywords:

Raspberry , fruit ripening , cellulase , polygalacturonase , β-galactosidase