High-efficiency cell disruption and astaxanthin recovery from Haematococcus pluvialis cyst cells using room-temperature imidazoliumbased ionic liquid/water mixtures 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies
年/卷/期
2019 / 274 /
页码
120-126
ISSN号
0960-8524
作者单位
Korea Inst Energy Res, Climate Change Res Div, Daejeon 34129, South Korea;Pusan Natl Univ, Sch Chem & Biomol Engn, Busan 46241, South Korea;Korea Inst Energy Res, Climate Change Res Div, Daejeon 34129, South Korea;Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea;Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea;Korea Inst Energy Res, Climate Change Res Div, Daejeon 34129, South Korea;Korea Inst Energy Res, Climate Change Res Div, Daejeon 34129, South Korea;Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea;Korea Inst Energy Res, Climate Change Res Div, Daejeon 34129, South Korea;
作者
Choi, Sun-A;Oh, You-Kwan;Lee, Jiye;Sim, Sang Jun;Hong, Min Eui;Park, Ji-Yeon;Kim, Min-Sik;Kim, Seung Wook;Lee, Jin-Suk;
摘要
Energy-saving, high-efficiency cell disruption is a critical step for recovery of thermolabile antioxidant astaxanthin from Haematococcus pluvialis cyst cells of rigid cell-wall structure. In this study, as room-temperature green solvents, 10 types of 1-ethyl-3-methylimidazolium([Emim])-based ionic liquids (ILs) were compared and evaluated for their abilities to disrupt H. pluvialis cyst cells for astaxanthin/lipid extraction. Among the 10 ILs tested, 3 [Emim]-based ILs with HSO4, CH3SO3, and (CF3SO2)(2)N anions were selected based on astaxanthin/lipid extraction performance and synthesis cost. When pretreated with IL/water mixtures, intact cyst cells were significantly torn, broken or shown to release cytoplasmic components, thereby facilitating subsequent separation of astaxanthin/lipid by hexane. However, excess IL pretreatments at high temperature/IL dosages and longer incubation times significantly deteriorated lipid and/or astaxanthin. Under optimized mild conditions (6.7% (v/v) IL in water solution, 30 degrees C, 60 min), almost complete astaxanthin recoveries (> 99%) along with moderate lipid extractions (similar to 82%) could be obtained.
机翻摘要
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关键词/主题词
Haematococcus pluvialis cyst;Ionic liquid;Astaxanthin extraction;Lipid extraction;Cell disruption;
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