DOI: 10.1016/j.jcou.2017.04.012
Scopus记录号: 2-s2.0-85019037716
论文题名: Supercritical CO2 processing strategies for pyrethrins selective extraction
作者: Baldino L. ; Della Porta G. ; Reverchon E.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 20 起始页码: 14
结束页码: 19
语种: 英语
英文关键词: Fractional separation
; Insecticidal principles
; Supercritical CO2 extraction
Scopus关键词: Carbon dioxide
; Separation
; Extraction process
; Insecticidal principles
; Process condition
; Process strategies
; Processing strategies
; Selective extraction
; Supercritical CO
; Supercritical processing
; Extraction
英文摘要: The extraction of pyrethrins from chrysanthemum flowers has been performed using supercritical CO2 (SC-CO2) extraction coupled to fractional separation, with the aim of producing complete and selective extraction of these insecticidal principles. 90 bar, 40 °C were selected as the operative conditions for a first step of extraction, to work at moderate SC-CO2 density; two separators in series operating at -10 °C and at a pressure equal to that of extraction, and 25 °C, 15 bar, were used for fractional separation, respectively. A second SC-extraction step, performed at 200 bar 40 °C, demonstrated that many undesired compounds were co-extracted at these process conditions. The comparison with liquid extraction, using petroleum ether, showed that using SC-CO2 and an exhaustive processing, 30% more pyrethrins were extracted. Using the fractional separation, the produced extracts contained about 99% w/w pyrethrins if the process was stopped after about 80 min. Another suggested duration of the extraction process can be set at about 250 min, at which about 63% w/w pyrethrins were contained in the extracted material. The adopted process strategy could be readily extended to the supercritical processing of several other materials and to the industrial scale. © 2017 Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52712
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Baldino L.,Della Porta G.,Reverchon E.. Supercritical CO2 processing strategies for pyrethrins selective extraction[J]. Journal of CO2 Utilization,2017-01-01,20