<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Freshwater zooplankton, which is commonly used as a starting fish feed, has a low content of essential compounds such as carotenoids. The possibility of increasing the productivity of carotenogenic yeast, <italic>Rhodotorula glutinis</italic>, for further bioencapsulation of zooplankton <italic>Daphnia magna</italic> is shown. An association of a UV irradiated yeast strain with lactic acid bacteria was cultivated for this purpose. This permitted intensifying the carotenogenesis of yeast, and the content of â-carotene increased by 1.7 times, and that of torularodine by 2.3 times compared with the native monoculture. The use of the association of microorganisms as a feed substrate in the cultivation of <italic>Daphnia magna</italic> provided both an increase in the carotenoid content in the investigated crustaceans more than 8 times, and their biomass by 2.5 times compared with the standard feed of <italic>Saccharomyces cerevisiae</italic>.</p></abstract>

Freshwater zooplankton, which is commonly used as a starting fish feed, has a low content of essential compounds such as carotenoids. The possibility of increasing the productivity of carotenogenic yeast, Rhodotorula glutinis, for further bioencapsulation of zooplankton Daphnia magna is shown. An association of a UV irradiated yeast strain with lactic acid bacteria was cultivated for this purpose. This permitted intensifying the carotenogenesis of yeast, and the content of â-carotene increased by 1.7 times, and that of torularodine by 2.3 times compared with the native monoculture. The use of the association of microorganisms as a feed substrate in the cultivation of Daphnia magna provided both an increase in the carotenoid content in the investigated crustaceans more than 8 times, and their biomass by 2.5 times compared with the standard feed of Saccharomyces cerevisiae.

Application of an association of yeast and lactic acid bacteria to bioencapsulate carotenoids in <italic>Daphnia magna</italic> (Straus, 1820)

Department of Biochemistry and Biotechnology

Yuriy Fedkovych Chernivtsi National University

Fisheries & Aquatic Life

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of an association of yeast and lactic acid bacteria to bioencapsulate carotenoids in  (Straus, 1820)

Freshwater zooplankton, which is commonly used as a starting fish feed, has a low content of essential compounds such as carotenoids. The possibility of...

Application of an association of yeast and lactic acid bacteria to bioencapsulate carotenoids in Daphnia magna (Straus, 1820)

Published Online: Jan 29, 2021

Page range: 225 - 233

Received: Oct 07, 2019

Accepted: Dec 14, 2020

DOI: https://doi.org/10.2478/aopf-2020-0027

Keywords
enriched live feed, essential compounds, lactic acid bacteria, zooplankton

© 2020 Liliia Vasina et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of an association of yeast and lactic acid bacteria to bioencapsulate carotenoids in Daphnia magna (Straus, 1820)

Published Online: Jan 29, 2021

Page range: 225 - 233

Received: Oct 07, 2019

Accepted: Dec 14, 2020

DOI: https://doi.org/10.2478/aopf-2020-0027

Keywordsenriched live feed, essential compounds, lactic acid bacteria, zooplankton

© 2020 Liliia Vasina et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
enriched live feed, essential compounds, lactic acid bacteria, zooplankton