NDLI: Submerged fermentation in wheat substrates for production of Monascus pigments

Content Provider	Springer Nature Link
Author	Domínguez Espisa, Rosa M. Webb, Colin
Copyright Year	2003
Abstract	Cereal grains are normally used as solid substrates for the production of Monascus metabolites. However, solid fermentation in these substrates requires complex control systems, whereas in liquid culture the control of the fermentation is simpler and consequently significant reductions in fermentation times can be achieved. In the same way, the use of submerged culture can benefit the production of many secondary metabolites and decrease production costs by reducing the labour involved in solid-state methods. A flour composed of a mixed variety of Canadian hard wheat was used as sole nutrient source to produce the pigments of Monascus purpureus Went (IMI 210765). Supplementation with NH$_{4}$Cl promoted biomass and orange dye formation, whereas the use of zinc sulphate favoured red dyes production. In submerged fermentations significant differences in final pigment yields were observed in the use of wheat-based broth at different concentrations in the presence of bran particles and/or gluten protein. It has been found that the viscosity of the broth had a significant effect on the growth morphology and production of pigments. Gluten-free wheat flour at concentrations of 3–5% was found to be the most suitable for liquid Monascus culture. The subsequent use of passive immobilization of Monascus served to enhance red pigment yields and to facilitate the downstream processing of the dyes.
Starting Page	329
Ending Page	336
Page Count	8
File Format	PDF
ISSN	09593993
Journal	World Journal of Microbiology and Biotechnology
Volume Number	19
Issue Number	3
e-ISSN	15730972
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chemistry/Food Science Biochemistry Microbiology Animal Anatomy Morphology Histology Environmental Biotechnology
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Applied Microbiology and Biotechnology Biotechnology

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