BioChem - DOS

Ultrasound as an alternative technology to extract carotenoids and lipids from Heterochlorella luteoviridis

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Jaeschke, Dé bora Pez; Rech, Rosane; Marczak, Ligia Damasceno Ferreira; Mercali, Giovana Domeneghini

<P><B>Abstract</B></P> <P>The present work evaluated the use of ultrasound as a pre-treatment to lipid and carotenoid extraction from the microalgae <I>Heterochlorella luteoviridis</I>. The pre-treatment was performed in the presence of ethanol (25%, v/v) with the ultrasound intensity varying from 0 to 100% (435kJkg<SUP>&minus;1</SUP>). After the pre-treatment, a diffusive step was performed in order to evaluate different ethanol concentrations (50&ndash;75%, v/v). The results regarding carotenoid extraction showed that there is an optimal extraction region: 40&ndash;80% of ultrasound intensity and 60&ndash;75% of ethanol concentration. The lipid extraction was not influenced by the ultrasound pre-treatment and increased with the increase of ethanol concentration.</P> <P><B>Highlights</B></P> <P> <UL> <LI> An alternative carotenoid and lipid extraction method from microalgae was studied. </LI> <LI> Ultrasound was evaluated as a pre-treatment to the extraction. </LI> <LI> Ethanol at different concentrations was evaluated as extraction solvent. </LI> <LI> The methodology showed to be attractive for carotenoid extraction. </LI> </UL> </P>

2017

Elsevier

publisher-specific-oa

0960-8524

224

pp.753-757

10.1016/j.biortech.2016.11.107

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART77034380

Microalgae; Pigments; Fatty acids; Ethanol