Production of Extracellular Pigment by a Mutant of Monascus kaoliang sp. nov

AUTOR(ES)

Lin, Ching-Fwu

RESUMO

A hyperpigment-producing mutant, R-10847, was derived from Monascus kaoliang F-2 (ATCC 26264) through a series of mutagenesis steps. The mutant produced a large quantity of Monascus pigment when grown in mantou (steamed bread) by solid culture. The mutant produced pigments extracellularly by extruding the pigments outside the cell in a lump together with some viscous substances. The productivity of pigment was about 100-fold greater than that of the wild type. The mutant lost the capability of spore formation, the growth rate decreased, and both the size and quantity of conidia were reduced. The color of the pigment produced by the mutant changed from orange to deep red.

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