Mutation Breeding of a High Polygalacturonase-Producing Aspergillus niger Strain

doi:10.7506/spkx1002-6630-201307048

Abstract

Abstract: Aspergillus niger strain SH312-26 was isolated by apparent circle method from strain SH312. A mutant strain named as SH312-26-19 was obtained by UV radiation using SH312-26 the original strain. The polygalacturonase activity of SH312-26-19 was 113.68 kU/mL, a 1.44-fold increase than that of strain SH-312-26. The pectin esterase activity was 14.34 kU/mL, a 0.14-fold increase than that of the original strain. After 5 passages on slant culture medium, the mutant remained genetically stable.

Key words: polygalacturonase, mutation breeding, selection

CLC Number:

TS201.3

ZHANG Yuan-yuan，HAO Lin*，WANG Qian. Mutation Breeding of a High Polygalacturonase-Producing Aspergillus niger Strain[J]. FOOD SCIENCE, 2013, 34(7): 231-233.

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