Abstract
To investigate the effects of selenium and light wavelengths on the growth of liquid-cultured Cordyceps militaris and the main active components’ accumulation, culture conditions as selenium selenite concentrations and light of different wavelengths were studied. The results are: adenosine accumulation proved to be significantly selenium dependent (R 2 = 0.9403) and cordycepin contents were determined to be not significantly selenium dependent (R 2 = 0.3845) but significantly enhanced by selenium except for 20 ppm; there were significant differences in cordycepin contents, adenosine contents, and mycelium growth caused by light wavelengths: cordycepin, blue light > pink light > daylight, darkness, red light; adenosine, red light > pink light, darkness, daylight, blue light; and mycelium growth, red light > pink light, darkness, daylight > blue light. In conclusion, light wavelength had a significant influence on production of mycelia, adenosine, and cordycepin, so lightening wavelength should be changed according to target products in the liquid culture of C. militaris.
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Acknowledgments
This research was partially funded by the Ethnological Affair Committee Foundation of China (Grant No. 10HB02) and by the Doctor Research Project (498012) of Hubei University for Nationalities. We are grateful to anonymous reviewers and scientific editor for the critical review and valuable suggestions.
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Dong, J.Z., Liu, M.R., Lei, C. et al. Effects of Selenium and Light Wavelengths on Liquid Culture of Cordyceps militaris Link. Appl Biochem Biotechnol 166, 2030–2036 (2012). https://doi.org/10.1007/s12010-012-9628-5
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DOI: https://doi.org/10.1007/s12010-012-9628-5