Selenium Incorporation to Amino Acids in Chlorella Cultures Grown in Phototrophic and Heterotrophic Regimes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F20%3A43901220" target="_blank" >RIV/60076658:12220/20:43901220 - isvavai.cz</a>
Alternative codes found
RIV/61388971:_____/20:00524608 RIV/60076658:12310/20:43901220 RIV/00216224:14310/20:00116084
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.jafc.9b06196" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.jafc.9b06196</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jafc.9b06196" target="_blank" >10.1021/acs.jafc.9b06196</a>

Result language
angličtina
Original language name
Selenium Incorporation to Amino Acids in Chlorella Cultures Grown in Phototrophic and Heterotrophic Regimes
Original language description
Microalgae accumulate bioavailable selenium-containing amino acids (Se-AAs), and these are useful as a food supplement. While this accumulation has been studied in phototrophic algal cultures, little data exists for heterotrophic cultures. We have determined the Se-AAs content, selenium/sulfur (Se/S) substitution rates, and overall Se accumulation balance in photo-and heterotrophic Chlorella cultures. Laboratory trials revealed that heterotrophic cultures tolerate Se doses, similar to 8-fold higher compared to phototrophic cultures, resulting in a similar to 2-3-fold higher Se-AAs content. In large-scale experiments, both cultivation regimes provided comparable Se-AAs content. Outdoor phototrophic cultures accumulated up to 400 mu g g(-1) of total Se-AAs and exhibited a high level of Se/S substitution (5-10%) with 30-60% organic/total Se embedded in the biomass. A slightly higher content of Se-AAs and ratio of Se/S substitution was obtained for a heterotrophic culture in pilot-scale fermentors. The data presented here shows that heterotrophic Chlorella cultures provide an alternative for Se-enriched biomass production and provides information on Se-AAs content and speciation in different cultivation regimes.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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