水黃皮Pongamia pinnata (Linn.) Pierre ex Merr是屬於豆科的植物，在台灣、中國大陸南部、印度、澳洲熱帶地方均有分布。文獻記載顯示具抗發炎及止潰瘍所造成的疼痛、具有抗菌、抗濾過性病毒及具抗熱病的藥理活性。在我們持續致力於化妝品天然原料的開發研究中，最近發現水黃皮葉之萃取物具有抗氧化活性。本研究以抗氧化活性導向進行水黃皮葉之活性成份研究,分離出的活性成分並經由光譜分析確定其結構。

In our contining search for natural source ingredient from Chinese

medicinal herbs,was found that extracts of Pongamia pinnata showed

the significant antioxidant activity.

In this study ,the active constituent of Pongamia pinnata ,was

isolated by process of antioxidant activity assay and column chromato-

graphy. The structure was established by the spectroscopic methods and

its activity was also achieved.

摘要．．．．．．．．．．．．．．．．．．．．．．．．．．．
Abstract．．．．．．．．．．．．．．．．．．．．．．．．．．
第一章 緒論．．．．．．．．．．．．．．．．．．．．．．．1
第一節 前言．．．．．．．．．．．．．．．．．．．．．．．1
第二節 植物介紹．．．．．．．．．．．．．．．．．．．．．2
第三節 水黃皮之相關文獻．．．．．．．．．．．．．．．．．4
第二章 文獻資料．．．．．．．．．．．．．．．．．．．．．13
第一節 自由基之介紹．．．．．．．．．．．．．．．．．．．13
第二節 抗氧化劑的介紹．．．．．．．．．．．．．．．．．．16
第三節 黃酮類的結構特性．．．．．．．．．．．．．．．．．19
第三章 活性試驗．．．．．．．．．．．．．．．．．．．．．23 第一節 UV光吸收測定．．．．．．．．．．．．．．．．．．23
第二節 抗氧化DPPH活性測定部分．．．．．．．．．．．．．23
第三節 總酚類化合物含量測定．．．．．．．．．．．．．．．25
第四章 儀器設備、試藥與溶劑．．．．．．．．．．．．．．．29
第五章 結果與討論．．．．．．．．．．．．．．．．．．．．31
第一節 樣品的前處理流程．．．．．．．．．．．．．．．．．31
第二節 水黃皮葉部各分層萃取流程．．．．．．．．．．．．．32
第三節 水黃皮葉部乙酸乙酯層之活性分離流程．．．．．．．．35
第六章 結構鑑定．．．．．．．．．．．．．．．．．．．．．43
第七章 結論．．．．．．．．．．．．．．．．．．．．．．．60
參考文獻．．．．．．．．．．．．．．．．．．．．．．．．．61
圖表附錄．．．．．．．．．．．．．．．．．．．．．．．．．．．
表2-1 活性氧物質的種類．．．．．．．．．．．．．．．．．13
表2-2 酚類化合物成份主要分類．．．．．．．．．．．．．．20
表2-3 黃酮類化合物之分類．．．．．．．．．．．．．．．．．21
表2-4 各種類別黃酮的抗氧化特性．．．．．．．．．．．．．．22
圖3-1 50% EtOH、95% EtOH、水三層初萃物清除自由基能力．．26
圖3-2 50％ EtOH、95％ EtOH、可溶層初萃物UV吸收圖．．．27
表3-1 50% EtOH、95% EtOH、水三層初萃物UV吸收位置．．．27
圖3-3 50% EtOH、95% EtOH、水三層初萃物總酚類化合物含量之比較．．．．．．．．．．．．．．．．．．．．．．．．．．．28
表5-1水黃皮葉部的前處理流程．．．．．．．．．．．．．．．31
圖5-1 EA、n-BuOH、水各可溶層的抗氧化活性測試．．．．．．32
圖5-2 EA、n-BuOH、水各可溶層的UV吸收圖．．．．．．．．．33
表5-2 EA、n-BuOH、水各可溶層的UV吸收值．．．．．．．．33
圖5-3 EA、n-BuOH、水各可溶層的總酚類含量．．．．．．．．34
表5-3 水黃皮葉部管柱層析分離過程．．．．．．．．．．．．35
圖5-4 各沖堤層初萃取物清除自由基的百分率．．．．．．．．37
圖5-5 各沖堤層初萃取物的UV吸收圖．．．．．．．．．．．39
表5-4 4：1 沖堤層與2：1 沖堤層的EC50值．．．．．．．．39
圖5-6 各沖堤層的UV吸收光譜圖．．．．．．．．．．．．．41
圖5-7 逆相管柱層析各沖堤層之UV吸收光譜圖．．．．．．．42

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