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Mar. Drugs 2016, 14(7), 125; doi:10.3390/md14070125

Screening of Diatom Strains and Characterization of Cyclotella cryptica as A Potential Fucoxanthin Producer

1
Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China
2
South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Sun Yat-sen University, Guangzhou 510006, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Georg Pohnert
Received: 30 April 2016 / Revised: 18 June 2016 / Accepted: 29 June 2016 / Published: 8 July 2016
(This article belongs to the Collection Bioactive Compounds from Marine Plankton)
View Full-Text   |   Download PDF [1846 KB, uploaded 8 July 2016]   |  

Abstract

Fucoxanthin has been receiving ever-increasing interest due to its broad health beneficial effects. Currently, seaweeds are the predominant source of natural fucoxanthin. However, the disappointingly low fucoxanthin content has impeded their use, driving the exploration of alternative fucoxanthin producers. In the present study, thirteen diatom strains were evaluated with respect to growth and fucoxanthin production potential. Cyclotella cryptica (CCMP 333), which grew well for fucoxanthin production under both photoautotrophic and heterotrophic growth conditions, was selected for further investigation. The supply of nitrate and light individually or in combination were all found to promote growth and fucoxanthin accumulation. When transferring heterotrophic cultures to light, fucoxanthin responded differentially to light intensities and was impaired by higher light intensity with a concomitant increase in diadinoxanthin and diatoxanthin, indicative of the modulation of Diadinoxanthin Cycle to cope with the light stress. Taken together, we, for the first time, performed the screening of diatom strains for fucoxanthin production potential and investigated in detail the effect of nutritional and environmental factors on C. cryptica growth and fucoxanthin accumulation. These results provide valuable implications into future engineering of C. cryptica culture parameters for improved fucoxanthin production and C. cryptica may emerge as a promising microalgal source of fucoxanthin. View Full-Text
Keywords: fucoxanthin; Cyclotella cryptica; diatom; heterotrophic cultivation fucoxanthin; Cyclotella cryptica; diatom; heterotrophic cultivation
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MDPI and ACS Style

Guo, B.; Liu, B.; Yang, B.; Sun, P.; Lu, X.; Liu, J.; Chen, F. Screening of Diatom Strains and Characterization of Cyclotella cryptica as A Potential Fucoxanthin Producer. Mar. Drugs 2016, 14, 125.

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