NDLI: Applying the strategy of light environment control to improve the biomass and polysaccharide production of Nostoc flagelliforme

Content Provider	Springer Nature Link
Author	Han, Pei pei Shen, Shi gang Wang, Hui Yan Yao, Shun yu Tan, Zhi lei Zhong, Cheng Jia, Shi ru
Copyright Year	2016
Abstract	The strategy of light environment control was applied to improve biomass and extracellular polysaccharides (EPS) production of the cyanobacterium Nostoc flagelliforme by adjusting multiple wavelengths (red 660 nm, blue 460 nm, green 520 nm) and light intensity assisted by nitrogen source optimization. A mixed wavelength with low light intensity was more suitable for cell growth. Wavelength shift approach, i.e., manipulation of light wavelength at appropriate culture stages, increased both biomass and EPS production, and optimum shift time was at 9 days. The effects of four nitrogen sources under different light conditions were subsequently evaluated, and urea showed the best performance. The optimized wavelength shift approach (9-day illumination with white light followed by 9-day culture with mixed wavelengths of red/blue/green = 12:5:5) with urea as nitrogen source improved the biomass from 0.72 ± 0.02 to 1.20 ± 0.02 g L$^{−1}$ (i.e., by 66 %) and EPS production from 27.31 ± 1.00 to 86.65 ± 2.56 mg L$^{−1}$ (i.e., by 217.3 %). These results provide information on novel culture strategies for microalgal biotechnology by applying light environment control.
Starting Page	55
Ending Page	65
Page Count	11
File Format	PDF
ISSN	09218971
Journal	Journal of Applied Phycology
Volume Number	29
Issue Number	1
e-ISSN	15735176
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-10-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Light environment control Biomass Extracellular polysaccharides Cyanobacterium Nostoc flagelliforme Light wavelength Plant Sciences Freshwater & Marine Ecology Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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