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  5. 台灣株Theissenia cinerea醱酵液之生物活性成分研究
 
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台灣株Theissenia cinerea醱酵液之生物活性成分研究

Other Title
Studies on the bioactive constituents of the fermented broth of Theissenia cinerea isolated in Taiwan
Type
thesis
Date Issued
2010-06-30
Author(s)
李亮欣
Advisor
李宗徽
Subjects
系所名稱:生藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:李宗徽
共同指導教授:
口試委員:李慶國;陳逸民
中文關鍵字:真菌;誘導型一氧化氮合成酶Theissenia cinerea;theissenoic acid;theissenoxide;theissenolactone A;theissenolactone B;theissenolactone C
Abstract
在曹 (2009) 的研究中,利用抑制一氧化氮合成酶 (inducible nitric oxide synthase, iNOS)的活性平台來篩選單離自本土的真菌,藉以找尋出具有抗發炎活性的真菌株,發現Theissenia cinerea (#89091602) 的醱酵培養液,對於離體RAW264.7細胞產生一氧化氮的活性,具有顯著的抑制作用。後續本研究中選擇以麥芽抽取物 (malt extract) 為培養基加以擴大培養後,針對醱酵液所含代謝產物進行一系列的分析、分離、純化與結構解析,計分離出9個化合物,分別為:theissenoic acid (1)、theissenoxide (2)、theissenolactone A (3)、theissenolactone B (4)、theissenolactone C (5)、5-hydroxymethylfurfural (6)、bis-2,5-hydroxymethylfuran (7)、succinic acid (8) 和tyrosol (9),其中1 - 5是過去未曾報導過的新化合物。在細胞毒殺活性上,4和5對於A549肺腺癌細胞具有中等強度的毒殺作用,其GI50分別為14.90與47.92 μM,此外,在iNOS的抑制實驗中,在100 ?慊/mL的濃度下,同樣發現4與5對RAW264.7有100%的毒殺作用,至於其劑量與活性間的相關性有待進一步探究。
URI
https://203.71.86.71/handle/123456789/13461

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