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  3. .博碩士學位論文
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  5. 蓮蓬之天然物成分探索
 
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蓮蓬之天然物成分探索

Other Title
Exploring the ingredients from the seedpod of Nelumbo nucifera Gaertn.
Type
thesis
Date Issued
2024-06-18
Author(s)
陳百新
Advisor
李慶國
Subjects
系所名稱:藥學系碩士班
Publisher
藥學系碩士班
Description
學位別:碩士
關鍵字:蓮; 蓮蓬; 糖尿病; α-glucosidase; 成分
論文公開日期:2024-07-02
Abstract
全球超過十分之一的成年人患有糖尿病,根據統計目前糖尿病的病例大多是第2型,抑制α-glucosidase酵素是關於治療第 2 型糖尿病的其中一種方法,因此本研究利用α-glucosidase快速篩選方法來鑑定天然產物中潛在的活性物質是常見的初步研究方法。
蓮花(Nelumbo nucifera Gaertn.)是東亞各地栽培的水生植物,蓮蓬屬於蓮花中較少被利用之部位且常常被視為廢棄物處理,經過文獻探索發現蓮子、蓮花、蓮蓬的粗萃物具有抗α-glucosidase之功效,而鮮少人對蓮蓬進行成分研究,基於上述因而選定蓮蓬為研究之天然物材料,希望從中進行成分與功用之探索。
本實驗使用95%酒精萃取3次,得到蓮蓬之粗萃物並以乙酸乙酯、正丁醇、水,進行分配萃取得到三層之粗萃物,將乙酸乙酯層進行MPLC及HPLC分離純化,其得到之純物質透過核磁共振鑑定其化合物,並經文獻比對後鑑定出(13R,14ξ,17E)-podioda-7,17,21-trien-3-ol、β-sitostenone、7-ketositosterol、tyrosol、epicryptomeridiol、quercetin、protocatechuic acid、cryptomeridiol、 vomifoliol、catechin、feruloyltyramine等11個化合物。另一方面探索蓮蓬中生物活性,以500μg/ml粗萃物進行酵素抑制活性篩選,結果顯示α-glucosidase (99%)、xanthine oxidase (44%)、tyrosinase (40%)。也利用LC-MS/MS結合α-glucosidase酵素的技術進行活性成分的快篩,了解蓮蓬中對於更多對於α-glucosidase抑制的潛在活性物質。
透過系統化篩選活性實驗,相信能夠揭示蓮蓬中化合物的生物活性,更有效地利用天然資源蓮蓬,來開發治療糖尿病的新方法和保健產品。
URI
https://203.71.86.71/handle/123456789/9883

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