Poly(β-malic acid) production by the non-growing cells of Aureobasidium sp. strain A-91

Abstract

Poly( l-malic acid), PM, production by the non-growing cells of Aureobasidium sp. strain A-91 was investigated. Reaction conditions were optimized using non-growing cells of strain A-91. The addition of CuSO 4 to the cell preparation medium was found to be effective to prepare active cells for PM production. The non-growing cells of the strain yielded 80.0 g/ l PM during 5 days' incubation at 30°C under optimal conditions (160 g/ l glucose and 40 g/ l CaCO 3).