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  4. v-Carotene extraction from Dunaliella salina by supercritical CO2
 
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2021
Journal Article
Title

v-Carotene extraction from Dunaliella salina by supercritical CO2

Abstract
This paper reports the results of supercritical carbon dioxide (scCO2) extraction of v-carotene from Dunaliella salina as potential alternative to conventional organic solvent extraction. In pilot-scale scCO2 experiments, the pressure, temperature, and co-solvent concentration were varied. The supercritical extraction at 500 bar, 70 °C, and 10 wt% ethanol as co-solvent yielded in the highly efficient pigment recovery of over 90%. Techno-economic assessment demonstrated higher energy consumption for the scCO2 extraction that was compensated by lower solvent costs. Thus, comparable pigment production costs to the reference extraction with n-hexane were estimated for the scCO2 process. Due to the green solvent properties of scCO2 and ethanol, this approach is highly promising for extraction of algal biomass in industrial scale.
Author(s)
Ludwig, K.
Rihko-Struckmann, L.
Brinitzer, Gordon
Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB  
Unkelbach, G.  
Sundmacher, K.
Journal
Journal of applied phycology  
Open Access
DOI
10.1007/s10811-021-02399-y
Language
English
Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB  
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