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  5. 兩種真菌醱酵液之生物活性成分研究
 
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兩種真菌醱酵液之生物活性成分研究

Other Title
Chemical investigation of the fermented broths of Theissenia rogersii and Stilbohypoxylon elaeicola
Type
thesis
Date Issued
2010-06-24
Author(s)
張雅雯
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:李水盛;蕭哲志
中文關鍵字:真菌;誘導型一氧化氮合成酶Theissenia rogersii;Stilbohypoxylon elaeicola;elaeicolaside;elaeicolactone
Abstract
利用抑制一氧化氮合成酶的活性分析平台來篩選真菌培養株,藉以篩檢出具有抗發炎活性的真菌株,發現某些真菌株的醱酵培養液或菌絲體萃取物,對於RAW264.7細胞的產生一氧化氮具有顯著的抑制作用。遂選定:Theissenia rogersii(#92031201)及Stilbohypoxylon elaeicola(#173)兩株進行其活性成分研究。在選擇以麥芽抽取物(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分析與分離,計獲得12個化合物,分別為: 2,5-dihydroxymethylfuran(1)、pycnidione(2)、maltol(3)、tyrosol(4)、hymatoxin K(5)、hymatoxin L(6)、elaeicolactone(7)、5-hydroxymethylfurfural(8)、elaeicolasdie A(9)elaeicolaside B(10)、elaeicolaside C(11)和 elaeicolaside D(12),其中屬於倍半萜之化合物7,及屬於二萜糖苷的化合物9、10及12,皆為新化合物。在100 μM的濃度下,10對於RAW264.7細胞的產生一氧化氮具有顯著的抑制活性且不具細胞毒性。此外,2及10對於A549肺腺癌細胞具有強的毒殺作用,其GI50分別為5.25 nM及9.79 μM。
URI
https://203.71.86.71/handle/123456789/13134

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