ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)

Microalgae are capable of producing biomolecules that have a wide variety of applications in agriculture, food industry, and medicine. In this study, three process variables are evaluated in order to determine its incidence on biomass and exopolysaccharides production. The effect of light intensity,...

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Autores principales:	Nancy M. CÓRDOBA-CASTRO, Andrés M. MONTENEGRO-JARAMILLO, Rosa E. PRIETO, Gloria E. GONZÁLEZ-MARIÑO
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2012
Materias:	Algae <I>Scenedesmus</I> exopolysaccharides process parameters experimental design. Food processing and manufacture TP368-456 Pharmaceutical industry HD9665-9675
Acceso en línea:	https://doaj.org/article/8cde12b4f0ce475c8a555b414c2d8e3d
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spelling	oai:doaj.org-article:8cde12b4f0ce475c8a555b414c2d8e3d2021-11-19T04:12:56ZANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)0121-40042145-2660https://doaj.org/article/8cde12b4f0ce475c8a555b414c2d8e3d2012-04-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/vitae/article/view/10867https://doaj.org/toc/0121-4004https://doaj.org/toc/2145-2660Microalgae are capable of producing biomolecules that have a wide variety of applications in agriculture, food industry, and medicine. In this study, three process variables are evaluated in order to determine its incidence on biomass and exopolysaccharides production. The effect of light intensity, agitation and carbon concentration on Scenedesmus obliquus (UTEX 393) growth and expolysaccaharides production is evaluated using 23 factorial design through the screening methodology. The simultaneous effect of level variation for three different experimental variables is examined in the present study in three levels for each parameter (Light intensity: 80, 130, 180 μE m-2 s-1, Agitation: 0, 600, 1200 rpm, carbon concentration 0, 2, 4% v/v Air-CO2). Specific growth rate and the exopolysaccharides concentration are the selected response variables. Results show that the optimal conditions for the two response variables correspond to the maximum levels of the three experimental variables (180 μE m-2 s-1, 4% air-CO2, and 1200 rpm), obtaining a specific growth rate of 0.64 d-1 and a exopolysaccharides concentration of 24.7 mg L-1. A significant interaction between the variables is observed, which has direct effects on cellular growth and exopolysaccharides production. The EPS production is facilitated by the turbulent flow (agitation maximum level), which is associated with a higher availability and better distribution of energy sources (light) and carbon dioxide. The validation of polynomials models verifies the relevance of the analysis performed. Nancy M. CÓRDOBA-CASTROAndrés M. MONTENEGRO-JARAMILLORosa E. PRIETOGloria E. GONZÁLEZ-MARIÑOUniversidad de AntioquiaarticleAlgae<I>Scenedesmus</I>exopolysaccharidesprocess parametersexperimental design.Food processing and manufactureTP368-456Pharmaceutical industryHD9665-9675ENVitae, Vol 19, Iss 1 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Algae <I>Scenedesmus</I> exopolysaccharides process parameters experimental design. Food processing and manufacture TP368-456 Pharmaceutical industry HD9665-9675
spellingShingle	Algae <I>Scenedesmus</I> exopolysaccharides process parameters experimental design. Food processing and manufacture TP368-456 Pharmaceutical industry HD9665-9675 Nancy M. CÓRDOBA-CASTRO Andrés M. MONTENEGRO-JARAMILLO Rosa E. PRIETO Gloria E. GONZÁLEZ-MARIÑO ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)
description	Microalgae are capable of producing biomolecules that have a wide variety of applications in agriculture, food industry, and medicine. In this study, three process variables are evaluated in order to determine its incidence on biomass and exopolysaccharides production. The effect of light intensity, agitation and carbon concentration on Scenedesmus obliquus (UTEX 393) growth and expolysaccaharides production is evaluated using 23 factorial design through the screening methodology. The simultaneous effect of level variation for three different experimental variables is examined in the present study in three levels for each parameter (Light intensity: 80, 130, 180 μE m-2 s-1, Agitation: 0, 600, 1200 rpm, carbon concentration 0, 2, 4% v/v Air-CO2). Specific growth rate and the exopolysaccharides concentration are the selected response variables. Results show that the optimal conditions for the two response variables correspond to the maximum levels of the three experimental variables (180 μE m-2 s-1, 4% air-CO2, and 1200 rpm), obtaining a specific growth rate of 0.64 d-1 and a exopolysaccharides concentration of 24.7 mg L-1. A significant interaction between the variables is observed, which has direct effects on cellular growth and exopolysaccharides production. The EPS production is facilitated by the turbulent flow (agitation maximum level), which is associated with a higher availability and better distribution of energy sources (light) and carbon dioxide. The validation of polynomials models verifies the relevance of the analysis performed.
format	article
author	Nancy M. CÓRDOBA-CASTRO Andrés M. MONTENEGRO-JARAMILLO Rosa E. PRIETO Gloria E. GONZÁLEZ-MARIÑO
author_facet	Nancy M. CÓRDOBA-CASTRO Andrés M. MONTENEGRO-JARAMILLO Rosa E. PRIETO Gloria E. GONZÁLEZ-MARIÑO
author_sort	Nancy M. CÓRDOBA-CASTRO
title	ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)
title_short	ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)
title_full	ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)
title_fullStr	ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)
title_full_unstemmed	ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)
title_sort	analysis of the effect of the interactions among three processing variables for the production of exopolysaccharides in the microalgae <i>scenedesmus obliquus</i> (utex 393)
publisher	Universidad de Antioquia
publishDate	2012
url	https://doaj.org/article/8cde12b4f0ce475c8a555b414c2d8e3d
work_keys_str_mv	AT nancymcordobacastro analysisoftheeffectoftheinteractionsamongthreeprocessingvariablesfortheproductionofexopolysaccharidesinthemicroalgaeiscenedesmusobliquusiutex393 AT andresmmontenegrojaramillo analysisoftheeffectoftheinteractionsamongthreeprocessingvariablesfortheproductionofexopolysaccharidesinthemicroalgaeiscenedesmusobliquusiutex393 AT rosaeprieto analysisoftheeffectoftheinteractionsamongthreeprocessingvariablesfortheproductionofexopolysaccharidesinthemicroalgaeiscenedesmusobliquusiutex393 AT gloriaegonzalezmarino analysisoftheeffectoftheinteractionsamongthreeprocessingvariablesfortheproductionofexopolysaccharidesinthemicroalgaeiscenedesmusobliquusiutex393
_version_	1718420506210729984

ANALYSIS OF THE EFFECT OF THE INTERACTIONS AMONG THREE PROCESSING VARIABLES FOR THE PRODUCTION OF EXOPOLYSACCHARIDES IN THE MICROALGAE <I>Scenedesmus obliquus</I> (UTEX 393)

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