期刊
MARINE DRUGS
卷 11, 期 7, 页码 2667-2681出版社
MDPI
DOI: 10.3390/md11072667
关键词
microalgae; Odontella aurita; fucoxanthin; photobioreactor; antioxidant
资金
- National High Technology Research and Development Program of China [2009AA06440, 2013AA065805]
- National Basic Research Program of China [2011CB2009001]
- National Natural Science Foundation of China [31170337]
- development Program for low carbon of Guangdong Province [2011-051]
- Fundamental Research Funds for the Central Universities [21612326]
The production, characterization, and antioxidant capacity of the carotenoid fucoxanthin from the marine diatom Odontella aurita were investigated. The results showed that low light and nitrogen-replete culture medium enhanced the biosynthesis of fucoxanthin. The maximum biomass concentration of 6.36 g L-1 and maximum fucoxanthin concentration of 18.47 mg g(-1) were obtained in cultures grown in a bubble column photobioreactor (O 3.0 cm inner diameter), resulting in a fucoxanthin volumetric productivity of 7.96 mg L-1 day(-1). A slight reduction in biomass production was observed in the scaling up of O. aurita culture in a flat plate photobioreactor, yet yielded a comparable fucoxanthin volumetric productivity. A rapid method was developed for extraction and purification of fucoxanthin. The purified fucoxanthin was identified as all-trans-fucoxanthin, which exhibited strong antioxidant properties, with the effective concentration for 50% scavenging (EC50) of 1,1-dihpenyl-2-picrylhydrazyl (DPPH) radical and 2,2-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid (ABTS) radical being 0.14 and 0.03 mg mL(-1), respectively. Our results suggested that O. aurita can be a natural source of fucoxanthin for human health and nutrition.
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