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| Two-step Fermentation of Carotenoid by Blue Light Induction in Cordyceps militaris L. |
| SHEN Jun-liang, JIN Hua-yan, GAO Ya, ZHA Mei-ling, FU Ming-jia |
| College of Life Sciences, Jiangxi Normal University, Nanchang 330027, China |
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Abstract Utilizing the dark shake flask culture and the static culture of blue light irradiation in the two-step fermentation, the blue light induced the carotenoid production of Cordyceps militaris L mycelia. The results showed that after 2 days shake flask in the darkness and 5 days static culture in the blue light, Cordyceps militaris L carotenoid content reached a maximum value 558.4μg/gFW. But adopting the dark shake flask culture of 2 days and different times static culture in blue light, the results show that for the first 2 days of blue light irradiation, the increase of Cordyceps militaris carotenoids content was not obvious, then a rapid increase was obtained and a maximum 558.4μg/gFW was reached in the fifth day, subsequently the content of carotenoids did not significantly change. The problem about imposed blue light is solved in the carotenoid production of Cordyceps militaris L fermentation.
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Received: 17 July 2012
Published: 25 February 2013
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