Monascus pigment production by solid-state fermentation with corn cob substrate |
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| Authors: | Velmurugan Palanivel Hur Hyun Balachandar Vellingiri Kamala-Kannan Seralathan Lee Kui-Jae Lee Sang-Myung Chae Jong-Chan Shea Patrick J Oh Byung-Taek |
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| Affiliation: | 1Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk 570-752, South Korea;2Korea Prime Pharma. Co., Ltd, Wanju, Jeonbuk 565-902, South Korea;3Department of Zoology, Division of Human Genetics, Bharathiar University, Coimbatore, Tamil Nadu 641-046, India;4Plant Medical Research Center, College of Agriculture and Life Science, Chonbuk National University, Jeonju, Jeonbuk 561-756, South Korea;5School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE 68583-0817, USA |
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| Abstract: | Natural pigments are an important alternative to potentially harmful synthetic dyes. We investigated the feasibility of corn cob powder as a substrate for production of pigments by Monascus purpureus KACC 42430 in solid-state fermentation. A pigment yield of 25.42 OD Units/gram of dry fermented substrate was achieved with corn cob powder and optimized process parameters, including 60% (w/w) initial moisture content, incubation at 30°C, inoculation with 4 mL of spores/gram of dry substrate, and an incubation period of 7 days. Pigment yield using corn cobs greatly exceeded those of most other agricultural waste substrates. The pigments were stable at acidic pH, high temperatures, and in salt solutions; all important considerations for industrial applications. Our results indicate the viability of corn cob substrate in combination with M. purpureus for industrial applications. |
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| Keywords: | Corn cob substrate Monascus purpureus Natural pigments Solid-state fermentation N-Acetyl glucosamine |
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