English  |  正體中文  |  简体中文  |  Items with full text/Total items : 94286/110023 (86%)
Visitors : 21693814      Online Users : 656
RC Version 6.0 © 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: http://asiair.asia.edu.tw/ir/handle/310904400/1997


    Title: 葡萄與葡萄細胞乙醇萃取物對抑制酪胺酸?活性之效能評估
    The inhibitory effects of ethanol extracts from fresh grape and grape cell on mushroom tyrosinase activity
    Authors: 薛煜彬
    Contributors: 生物科技學系碩士班
    Date: 2008
    Issue Date: 2009-10-13 06:35:43 (UTC+0)
    Publisher: 亞洲大學
    Abstract: 在生物體內,當酪胺酸酶分解某些受質,如: L-3,4-dihydroxyphenylalanine (L-dopa)可導致黑色素的形成。本研究分別探討巨峰葡萄(Vitis vinifera L.kyoho)與紅地球葡萄(Vitis vinifera L. red globe)之葡萄皮、葡萄籽,以及葡萄癒傷組織細胞、紅地球葡萄籽細胞之乙醇萃取物對酪胺酸酶分解 L-dopa 活性的影響,以評估葡萄與葡萄細胞做為皮膚保養品的可行性。本實驗中酪胺酸酶活性以分解 L-dopa 在分光光度計 475 nm 下所偵測 dopachrome 的生成量為指標。實驗數據指出,葡萄籽與葡萄皮都具有抑制酪胺酸酶分解 L-dopa 的作用。巨峰葡萄籽與葡萄皮的乙醇萃取物對酪胺酸酶的抑制作用並無明顯的差異;但紅地球葡萄籽乙醇萃取物的抑制作用則遠高於其葡萄皮。故就二種葡萄整體而言,可知巨峰葡萄的乙醇萃取物之抑制作用較紅地球葡萄為佳。此外,二種葡萄細胞的乙醇萃取物僅有些微抑制酪胺酸酶活性的效果,其抑制率為 8.96 ~ 30.61 %。在酵素動力學上,各種抑制物皆對酪胺酸酶的抑制形態皆現混合型抑制作用。
    Appears in Collections:[生物科技學系] 博碩士論文

    Files in This Item:

    File Description SizeFormat
    1997.doc24KbMicrosoft Word297View/Open
    index.html0KbHTML375View/Open


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


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