Exopolysaccharide (pullulan) production from cassava starch residue by Aureobasidium pullulans strain MTTC 1991

Abstract

Exopolysaccharide (EPS), pullulan, production by Aureobasidium pullulans strain MTCC 1991 was evaluated using cassava starch residue (CSR), wheat bran (WB) and rice bran (RB) as solid substrates as well as carbon source, with or without amendment of basal (mineral) medium. EPS production was negligible without amendment of basal medium on all tested substrates but with the supplementation of basal medium, production of EPS was maximum on CSR (27.5 g. kg⁻¹ substrate), followed by WB (19.5g.kg⁻¹ substrate) and RB (2.4g.kg⁻¹ substrate).