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  5. 臺灣特有種植物之抗光老化活性系列探討—山枇杷
 
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臺灣特有種植物之抗光老化活性系列探討—山枇杷

Other Title
A series of studies on the anti-photoaging activity in Taiwanese endemic plants—Eriobotrya deflexa
Type
thesis
Date Issued
2011-07-08
Author(s)
郭香君
Advisor
李美賢
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:李美賢
共同指導教授:
口試委員:郭悅雄 ;張溫良;徐鳳麟;侯文琪
中文關鍵字:山枇杷;人類皮膚纖維母細胞;抗光老化
Abstract
山枇杷 (Eriobotrya deflexa (Hemsl.) Nakai) 薔薇科 (Rosaceae)枇杷屬 (Eriobotrya) 常綠喬木,為台灣特有種植物,分布於台灣全島低、中海拔闊葉林中。本論文乃將山枇杷葉以 95% 乙醇萃取,分別以正己烷、乙酸乙酯、正丁醇及水進行部份劃分,其中乙酸乙酯層及正丁醇層萃取物,經由各種管柱層析方法進行分離純化,於乙酸乙酯層得到 5 個化合物,正丁醇層得到 8 個化合物,經理化及光譜相關數據與參考文獻比對後,確認構造為 7 個 flavonol glycosides 化合物:(1)、(2)、(3)、(4)、(5)、(6) 及 (9) ﹔1 個 flavone 化合物:(10) ﹔以及 2 個 caffeoyl 衍生之化合物:(7) 及 (8),其中有 3 個 flavonol glycosides 化合物:(3)、(5) 及 (8) 同時存在於兩層萃取物中。進而以高效液相層析-固相萃取-核磁共振 (LC-SPE-NMR) 進行分析,於乙酸乙酯層分析出含有 5 個 flavonol glycosides:(2)、(3)、(5)、(6)和 (9) 以及 5 個含有 p-coumaryl 基團化合物 ﹔於正丁醇層經管柱層析前處理,分析出含有 1 個 flavonol glycosides 化合物:(9)、1 個 caffeoyl 衍生之化合物、2 個含有 p-coumaryl 基團 及 2 個含有 caffeoyl 基團的化合物。進而以人類皮膚纖維母細胞,經紫外線 B 照射來誘導細胞大量分泌基質金屬蛋白酶 (MMPs),利用 MMP-1 做為抗光老化活性指標。結果顯示:在低細胞毒性下,化合物 (1)、(2)、(5) 及 (7) 於 100 μM 時,具有較明顯之抑制作用。
URI
https://203.71.86.71/handle/123456789/13462

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