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https://doi.org/10.30827/digib...
Doctoral thesis . 2020 . Peer-reviewed
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Análisis de microcistinas RR y LR en el cultivo de microalgas hipersalinas

Authors: Ruiz Alamillo, Mercedes;

Análisis de microcistinas RR y LR en el cultivo de microalgas hipersalinas

Abstract

El objetivo de este trabajo fue desarrollar, validar y aplicar la metodología de análisis mediante Cromatografía líquida de alta resolución (HPLC) para la determinación de la presencia de las microcistinas LR y RR en agua de cultivos de microalgas hipersalinas. Para ello se evaluaron los cultivos de la empresa Biothesan SLU, ubicada en la salina continental de la Malahá (Granada) durante el periodo de mayo a julio de 2.017 coincidiendo con los procesos de mayor proliferación, tanto de microalgas como de cianobacterias, en los tanques de almacenamiento de agua. Durante el periodo de experimentación se recogieron muestras de agua los días 20 de mayo, 26 de junio y 20 de julio, así como muestras de la biomasa existente para su caracterización taxonómica. Las muestras de agua fueron almacenadas a -20ºC en el Departamento de Química Analítica para su posterior procesado y análisis, y las muestras biológicas conservadas en la cámara de cultivos del Departamento de Botánica, ambos de la Universidad de Granada. Las muestras que se llevaron al departamento de Botánica se fijaron con Lugol para su posterior conteo. Las muestras biológicas fueron contadas y clasificadas taxonómicamente mediante microscopia. Las muestras de agua fueron analizadas en el Departamento de Química Analítica para evaluar la posible presencia de microcistinas, tarea que constituido el grueso de este trabajo. En el trabajo se discutió la metodología aplicada para la detección de toxinas como parte de los mecanismos de calidad y seguridad alimentaria que la empresa debe implantar para comercializar la producción de microalgas para consumo humano. Respecto de la hipótesis de partida previa a la realización de este trabajo se confirma la no presencia en el agua de las microcistinas LR y RR por encima de los límites de detección establecidos en el trabajo.

The objective of this work was to develop, validate and apply an analytical methodology using high performance liquid chromatography (HPLC) for the determination of the presence of microcystins LR and RR in water samples from cultures of hypersaline microalgae. In order to do so, we evaluated the biotypes of the company Biothesan SLU, located in the continental salt marsh of the Malahá (Granada) during the period from May to July of 2,017 coinciding with the processes of greater proliferation of both microalgae and cyanobacteria in the storage tanks of water. During the experiment period water samples were collected on May 20, June 26 and July 20, as well as samples of the existing biomass for its taxonomic characterization. The water samples were stored in the Department of Analytical Chemistry at -20ºC for further processing and analysis, and the biological samples preserved in the chamber of cultures of the Department of Botany, both of the University of Granada. The samples that were taken to the Department of Botany were fixed with Lugol for later counting. The biological samples were counted and classified by taxonomic microscopy. The water samples were analyzed in the Analytical Chemistry Department, a task that constituted the bulk of this work. The work discussed the methodology applied for the detection of toxins as part of the mechanisms of quality and food safety that the company must implement to commercialize the production of microalgae for human consumption. Regarding the starting hypothesis prior to the accomplishment of this work, the concentration of microcystins LR and RR in the water samples analized is below the limits of detection established for the method.

Universidad de Granada. Máster Universitario Oficial en Avances en Calidad y Tecnología Alimentaria, curso 2016-2017

Universidad de Granada. Grupo: Calidad química analítica alimentaria ambiental y clínica (FQM302)

Biothesan S.L.U. (La Malahá, Granada)

Country
Spain
Related Organizations
Keywords

Microcistinas, Microorganismos, Microalgas, Toxinas de las algas, Cromatografía líquida, Agua de mar

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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bronze
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