Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/28699
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 18034/20233 (89%)
Visitors : 23347414      Online Users : 472
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/28699


    Title: Simultaneous Extraction and Quantitation of Oleanolic Acid and Ursolic Acid from Scutellaria barbata D. Don by Ultrasound-Assisted Extraction and High-Performance Liquid Chromatography
    Authors: Yang, Yu-Chiao
    Wei, Ming-Chi
    Lian, Fan-Yu
    Huang, Ting-Chia
    Contributors: 環境工程與科學系
    藥物科技研究所
    Keywords: Heat-reflux extraction
    High-performance liquid chromatography
    Oleanolic acid
    Scutellaria barbata D
    Don
    Ultrasound-assisted extraction
    Ursolic acid
    Date: 2014-04
    Issue Date: 2015-05-06 21:25:38 (UTC+8)
    Publisher: Taylor & Francis Inc
    Abstract: A modified ultrasound-assisted extraction (MUAE) method and an HPLC technique were developed to identify and quantify simultaneously the amount of oleanolic acid (OA) and ursolic acid (UA) in Scutellaria barbata D. Don. The optimal conditions for MUAE were observed when the particle size was 0.2-0.5mm, the duty cycle was 75%, the extraction temperature was 55 degrees C, the ratio of solvent to raw material was 12.0:1 (mL:g), the ethanol concentration was 60%, and the extraction time was 25min. Compared to the traditional extraction method, MUAE reduced the extraction time, extraction temperature, and solvent consumption and achieved superior yields of OA and UA. Furthermore, the combined MUAE-HPLC method was successfully applied for the first time to investigate and compare the amounts of OA and UA in samples obtained from different geographical regions.
    Relation: Chemical Engineering Communications, v.201 n.4, pp.482-500
    Appears in Collections:[Dept. of Pharmacy] Periodical Articles
    [Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML1980View/Open


    All items in CNU IR are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback