Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater
Microalgae are microorganisms with the capacity to contribute to the sustainable and healthy food production, in addition to wastewater treatment. The subject of this work was to determine the potential of Scenedesmus obliquus microalga grown in brewery wastewater to act as a plant biostimulant. The...
| Main Authors: | , , , , |
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| Format: | info:eu-repo/semantics/article |
| Language: | English |
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MDPI
2020
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10835/7714 |
| _version_ | 1789406412888080384 |
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| author | Navarro López, Elvira Ruiz Nieto, Ángela Ferreira, Alice Acién Fernández, Francisco Gabriel Gouveia, Luisa |
| author_facet | Navarro López, Elvira Ruiz Nieto, Ángela Ferreira, Alice Acién Fernández, Francisco Gabriel Gouveia, Luisa |
| author_sort | Navarro López, Elvira |
| collection | DSpace |
| description | Microalgae are microorganisms with the capacity to contribute to the sustainable and healthy food production, in addition to wastewater treatment. The subject of this work was to determine the potential of Scenedesmus obliquus microalga grown in brewery wastewater to act as a plant biostimulant. The germination index of watercress seeds, as well as the auxin-like activity in mung bean and cucumber, and in the cytokinin-like activity in cucumber bioassays were used to evaluate the biostimulant potential. Several biomass processes were studied, such as centrifugation, ultrasonication and enzymatic hydrolysis, as well as the final concentration of microalgal extracts to determine their influence in the biostimulant activity of the Scenedesmus biomass. The results showed an increase of 40% on the germination index when using the biomass at 0.1 g/L, without any pre-treatment. For auxin-like activity, the best results (up to 60% with respect to control) were obtained at 0.5 g/L of biomass extract, after a combination of cell disruption, enzymatic hydrolysis and centrifugation. For cytokinin-like activity, the best results (up to 187.5% with respect to control) were achieved without cell disruption, after enzymatic hydrolysis and centrifugation at a biomass extract concentration of 2 g/L. |
| format | info:eu-repo/semantics/article |
| id | oai:repositorio.ual.es:10835-7714 |
| institution | Universidad de Cuenca |
| language | English |
| publishDate | 2020 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oai:repositorio.ual.es:10835-77142023-04-12T19:34:41Z Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater Navarro López, Elvira Ruiz Nieto, Ángela Ferreira, Alice Acién Fernández, Francisco Gabriel Gouveia, Luisa wastewater treatment Scenedesmus obliquus microalga biostimulants germination index root development Microalgae are microorganisms with the capacity to contribute to the sustainable and healthy food production, in addition to wastewater treatment. The subject of this work was to determine the potential of Scenedesmus obliquus microalga grown in brewery wastewater to act as a plant biostimulant. The germination index of watercress seeds, as well as the auxin-like activity in mung bean and cucumber, and in the cytokinin-like activity in cucumber bioassays were used to evaluate the biostimulant potential. Several biomass processes were studied, such as centrifugation, ultrasonication and enzymatic hydrolysis, as well as the final concentration of microalgal extracts to determine their influence in the biostimulant activity of the Scenedesmus biomass. The results showed an increase of 40% on the germination index when using the biomass at 0.1 g/L, without any pre-treatment. For auxin-like activity, the best results (up to 60% with respect to control) were obtained at 0.5 g/L of biomass extract, after a combination of cell disruption, enzymatic hydrolysis and centrifugation. For cytokinin-like activity, the best results (up to 187.5% with respect to control) were achieved without cell disruption, after enzymatic hydrolysis and centrifugation at a biomass extract concentration of 2 g/L. 2020-02-19T13:10:09Z 2020-02-19T13:10:09Z 2020-02-04 info:eu-repo/semantics/article 1420-3049 http://hdl.handle.net/10835/7714 en https://www.mdpi.com/1420-3049/25/3/664 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess MDPI |
| spellingShingle | wastewater treatment Scenedesmus obliquus microalga biostimulants germination index root development Navarro López, Elvira Ruiz Nieto, Ángela Ferreira, Alice Acién Fernández, Francisco Gabriel Gouveia, Luisa Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater |
| title | Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater |
| title_full | Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater |
| title_fullStr | Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater |
| title_full_unstemmed | Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater |
| title_short | Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater |
| title_sort | biostimulant potential of scenedesmus obliquus grown in brewery wastewater |
| topic | wastewater treatment Scenedesmus obliquus microalga biostimulants germination index root development |
| url | http://hdl.handle.net/10835/7714 |
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