类胡萝卜素
杜氏藻
食品科学
雨生红球菌
颜料
虾青素
番茄红素
微绿球藻
光合反应器
作者
Kristin Ludwig,Liisa Rihko-Struckmann,Gordon Brinitzer,Gerd Unkelbach,Kai Sundmacher
标识
DOI:10.1007/s10811-021-02399-y
摘要
This paper reports the results of supercritical carbon dioxide (scCO2) extraction of β-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.
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