Removal of toxic aristolochic acid components from Aristolochia plants by supercritical fluid extraction
Publication in refereed journal

香港中文大學研究人員

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摘要This study aimed to assess the feasibility of using supercritical fluid extraction (SFE) to remove the major aristolochic acid components from two Aristolochia herbs, Fructus Aristolochiae and Caulis Aristolochiae manshuriensis. Four operating parameters, viz., vessel pressure (P), vessel temperature (T), mole fraction (X) of entrainer (absolute ethanol) in supercritical carbon dioxide and extraction mode (EM) were investigated for their impact on the AA extraction. Statistical analysis revealed that the extraction mode and the mole fraction of entrainer were the only two dominant factors governing the AA extraction. For a 1-g powdered sample of 100-120 mesh size which had been pretreated with 2 mL absolute ethanol for 12 h, the removal of AA-I and AA-II from the two Aristolochia plants was best carried out in dynamic mode using a vessel pressure of 194 bar, vessel temperature of 50 degrees C, entrainer concentration of 0.2 mole fraction, and extraction time of 4 h. The removal rates of AA-I and AA-II were respectively 65.2% and 59.1% from Fructus Aristolochiae, and 81.3% and 81.2% from Caulis Aristolochiae manshuriensis. (C) 2010 Elsevier B.V. All rights reserved.
著者Liang QY, Chow AHL, Wang YT, Tong HHY, Zheng Y
期刊名稱Separation and Purification Technology
出版年份2010
月份5
日期11
卷號72
期次3
出版社ELSEVIER SCIENCE BV
頁次269 - 274
國際標準期刊號1383-5866
電子國際標準期刊號1873-3794
語言英式英語
關鍵詞Aristolochic acid (AA); Caulis Aristolochiae manshuriensis; Fructus Aristolochiae; Supercritical fluid extraction (SFE)
Web of Science 學科類別Engineering; Engineering, Chemical; ENGINEERING, CHEMICAL

上次更新時間 2020-17-09 於 00:49