Screening of microalgae and cyanobacteria strains for α-tocopherol content at different growth phases and the influence of nitrate reduction on α-tocopherol production.

Mudimu, Opayi, Koopmann, Inga Klara, Rybalka, Nataliya, Friedl, Thomas, Schulz, Rüdiger and Bilger, Wolfgang (2017) Screening of microalgae and cyanobacteria strains for α-tocopherol content at different growth phases and the influence of nitrate reduction on α-tocopherol production. Journal of Applied Phycology, 29 (6). pp. 2867-2875. DOI 10.1007/s10811-017-1188-1.

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Abstract

Tocopherols (vitamin E) are only synthesized by photosynthetic organisms and have wide applications in cosmetics and as dietary supplements in human nutrition and aquaculture. Tocopherols from microalgae and cyanobacteria are rarely investigated, and little is known about their contents. Therefore, 130 strains of cultured microalgae and cyanobacteria were analyzed for α-tocopherol content under various culture conditions. The growth phase had a significant effect on content of α-tocopherol. Maximal amounts were observed at the stationary growth phase. Reduction of nitrate concentration in media caused an increased production of α-tocopherol. The contents were significantly enhanced when the nitrate concentration was reduced to one fourth in culture media used. The content of α-tocopherol was found to reflect phylogenetic relationships at the level of classes, with classes of Rhodophyta and Cyanobacteria accumulating the lowest contents. Within each class, contents varied widely at the species level emphasizing the importance of extensive screening procedures for the identification of strains with high α-tocopherol contents.

Screening of microalgae and cyanobacteria strains for α-tocopherol content at... | Request PDF. Available from: https://www.researchgate.net/publication/318185169_Screening_of_microalgae_and_cyanobacteria_strains_for_a-tocopherol_content_at_different_growth_phases_and_the_influence_of_nitrate_reduction_on_a-tocopherol_production [accessed Jan 10 2018].

Document Type: Article
Keywords: Microalgae . Cyanobacteria . α-Tocopherol . Growth phase . Nitrate reduction
Research affiliation: Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1007/s10811-017-1188-1
ISSN: 0921-8971
Projects: Future Ocean
Date Deposited: 10 Jan 2018 14:46
Last Modified: 06 Feb 2020 09:03
URI: http://oceanrep.geomar.de/id/eprint/41396

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