PECTINOLYTIC ACTIVITY OF Aspergillus niger ON PECTIC AGRICULTURAL SUBSTRATES

Pectinase enzymes have imp01tant application in food, textile and agricultural industries. In the present study, the exopectinase and endopectinase activities of Aspergillus niger were investigated on two pectic substrates (wheat bran and citrus pectin). The amount of reducingsugar (D-galacturonic acid) which was released in supematant measmed for detennination of exopectinase activity. Endopectinase activity was detennined using viscometr·ical assay. The best production of the enzymes achieved in the second day for exopectinase and the sixth day for endopectinase in the cultures containing citr11s pectin as the sole carbon source, in contr·ast to wheat bran

کلیدواژه ها:

pectinase ، Aspergillus niger ، pectin ، wheat bran