Sugar-cane juice induces pectin lyase and polygalacturonase in "Penicillium griseoroseum"

RESUMO

The use of other inducers as substitutes for pectin was studied aiming to reduce the production costs of pectin enzymes. The effects of sugar-cane juice on the production of pectin lyase (PL) and polygalacturonase (PG) by "Penicillium griseoroseum" were investigatedd. The Fungus was cultured in a mineral medium (ph 6.3) in a rotary shaker (150 rpm) for 48 h at 25§C. Culture media were supplemented with yeast extract and sucrose or sugar-cane juice. Sugar-cane juice added singly to the medium promoted higher PL activity and mycelical dry weight when compared to pectin and the use of sugar-cane juice and yeast extract or pectin. The results indicated that were similar to those obtained with sucrose-yeast extractor pectin. The results indicated that, even at low concentrations, sugar-cane juice was capable of inducing pectin lyase and polygalacturonase with no cellulase activity in "P. griseoroseum".