Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture

Abstract. The aim of this study was to compare conditions for the production of high levels of PUFA, EPA and DHA in cultured microalgae for larval bivalve feeding stages. It assessed fatty acid composition by gas chromatography for Isochrysis galbana Parke (T-ISO) and 2 species of Chaetoceros, C. gr...

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Autores principales:	González,Fidelina, Sáez,Katia, Vega,María Eliana, Bizama,Berenice, Becerra,José, Lépez,Irene, Hernández,Víctor, Silva,Mario
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2019
Materias:	Microalgae fatty acids eicosapentaenoic acid
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572019000100091
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spelling	oai:scielo:S0718-195720190001000912019-07-31Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch cultureGonzález,FidelinaSáez,KatiaVega,María ElianaBizama,BereniceBecerra,JoséLépez,IreneHernández,VíctorSilva,Mario Microalgae fatty acids eicosapentaenoic acid Abstract. The aim of this study was to compare conditions for the production of high levels of PUFA, EPA and DHA in cultured microalgae for larval bivalve feeding stages. It assessed fatty acid composition by gas chromatography for Isochrysis galbana Parke (T-ISO) and 2 species of Chaetoceros, C. gracilis Pantocsek and C. constrictus Gran. Species were studied in batch cultures, at the beginning of stationary growth phase with different irradiance and 2 levels of nitrogen content for Chaetoceros sp., and constant irradiance with 5 concentrations of sodium nitrate for I. galbana in an F/2 medium. Isochrysis galbana produced higher levels of linolenic acid and docosahexaenoic acid than eicosapentaenoic acid (EPA) at low N-nitrate concentrations; however, fatty acids increased notably with surplus N-nitrate, above F/2 medium content. Low irradiance and normal concentration of nitrates in the batches of Chaetoceros gracilis species produced a greater EPA content. C. constrictus, a diatom isolated from phytoplankton samples, presented higher levels of EPA and DHA at low levels of nitrogen and low irradiance.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.54 n.1 20192019-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572019000100091en10.22370/rbmo.2019.54.1.1569
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Microalgae fatty acids eicosapentaenoic acid
spellingShingle	Microalgae fatty acids eicosapentaenoic acid González,Fidelina Sáez,Katia Vega,María Eliana Bizama,Berenice Becerra,José Lépez,Irene Hernández,Víctor Silva,Mario Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture
description	Abstract. The aim of this study was to compare conditions for the production of high levels of PUFA, EPA and DHA in cultured microalgae for larval bivalve feeding stages. It assessed fatty acid composition by gas chromatography for Isochrysis galbana Parke (T-ISO) and 2 species of Chaetoceros, C. gracilis Pantocsek and C. constrictus Gran. Species were studied in batch cultures, at the beginning of stationary growth phase with different irradiance and 2 levels of nitrogen content for Chaetoceros sp., and constant irradiance with 5 concentrations of sodium nitrate for I. galbana in an F/2 medium. Isochrysis galbana produced higher levels of linolenic acid and docosahexaenoic acid than eicosapentaenoic acid (EPA) at low N-nitrate concentrations; however, fatty acids increased notably with surplus N-nitrate, above F/2 medium content. Low irradiance and normal concentration of nitrates in the batches of Chaetoceros gracilis species produced a greater EPA content. C. constrictus, a diatom isolated from phytoplankton samples, presented higher levels of EPA and DHA at low levels of nitrogen and low irradiance.
author	González,Fidelina Sáez,Katia Vega,María Eliana Bizama,Berenice Becerra,José Lépez,Irene Hernández,Víctor Silva,Mario
author_facet	González,Fidelina Sáez,Katia Vega,María Eliana Bizama,Berenice Becerra,José Lépez,Irene Hernández,Víctor Silva,Mario
author_sort	González,Fidelina
title	Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture
title_short	Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture
title_full	Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture
title_fullStr	Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture
title_full_unstemmed	Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture
title_sort	effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572019000100091
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Effect of nitrate and irradiance on fatty acid production in microalgae cultivated for feeding larvae and broodstock conditioning in batch culture

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