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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/27807

    標題: Comparison of modified ultrasound-assisted and traditional extraction methods for the extraction of baicalin and baicalein from Radix Scutellariae
    作者: Yang, Yu-Chiao
    Wei, Ming-Chi
    Huang, Ting-Chia
    Lee, Suen-Zone
    Lin, Shiow-Shyung
    貢獻者: 環境工程與科學系
    關鍵字: Radix Scutellariae
    Ultrasound-Assisted Extraction
    日期: 2013-02
    上傳時間: 2014-05-26 10:44:28 (UTC+8)
    出版者: Elsevier Science Bv
    摘要: An attempt was made in this study to extract baicalin and baicalein from Radix Scutellariae using modified ultrasound-assisted extraction (UAE), and these results were compared to a commonly used heat reflux extraction (HRE) procedure. The best results were obtained when working at an ultrasonic frequency of 40 kHz, a power of 185W, an ultrasound cycle of 79% (intermittent sonication), a mean particle size of 0.355 mm, a ratio of solvent to raw material of 10:1 (mL/g), an extraction time of 20 min and three cycles. The optimum extraction temperature and ethanol concentration differ for different flavanone compounds. The extraction of baicalin and baicalein were most efficient at temperatures of 60 and 30 degrees C, respectively, with ethanol concentrations of 40 and 50% (v/v), respectively. Compared with HRE, the modified UAE method reduced the extraction time, the extraction temperature and the solvent consumption. Moreover, UAE achieved superior baicalin and baicalein yields, is a potential method for industry. (c) 2012 Elsevier B.V. All rights reserved.
    關聯: Industrial Crops And Products, v.45 pp.182-190
    Appears in Collections:[環境工程與科學系(所)] 期刊論文

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