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Culture of dinoflagellates in a fed-batch and continuous stirred-tank photobioreactors: Growth, oxidative stress and toxin production

Paper ID Volume ID Publish Year Pages File Format Full-Text
35668 45101 2010 7 PDF Available
Title
Culture of dinoflagellates in a fed-batch and continuous stirred-tank photobioreactors: Growth, oxidative stress and toxin production
Abstract

Dinoflagellates are potentially important sources of high-value toxins in biomedical, toxicological and chemical research programs. However, the difficulty to culture them in bioreactors limits the development of new products. L1 and other usual dinoflagellates media have been shown to not support an elevated cell growth. The present work evaluated the nutrient uptake rates and nutrient cell yields of Protoceratium reticulatum in different culture modes that allowed to maintain a high concentration of cells under a quasi-steady-state concentration of nutrients. Monitoring of the cellular ROS and lipoperoxides contents in low-shear bioreactor cultures is proposed as culture health-indicating parameters. The amount of yessotoxins (YTXs) produced by the strains studied to date was very different among them and are importantly conditioned by the culture conditions; therefore the strain selection is a key issue. In this work, we evaluated the growth and toxin production of two strains of P. reticulatum which are known to produce very different YTX quantities. The maximum productivities were obtained in continuous mode (up to 214 ng mL−1 day−1) achieving a sustainable production during more than 4 months. Finally, the purpose of the dinoflagellate toxins in nature and their relation with the nutrient abundances were discussed.

Keywords
Dinoflagellate; Protoceratium reticulatum; Yessotoxin; Photobioreactor; Oxidative stress; Microalga
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Culture of dinoflagellates in a fed-batch and continuous stirred-tank photobioreactors: Growth, oxidative stress and toxin production
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 45, Issue 5, May 2010, Pages 660–666
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us