類黃酮化合物抗氧化的研究

制藥工程論文編號:ZY094    論文字數:12671,頁數:30

目  錄
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1  類黃酮的定義 1
 1.2  理化性質.....................................................1
 1.2.1通性....................................................1
 1.2.2黃酮類化合物的鑒別與結構測定............................2
 1.3  黃酮類物質在醫學，食療保健和食品工業中的應用價值.............7
 1.4黃酮類物質的抗氧化性......................................8
2. 實驗部分...........................................................11
 2.1  實驗內容.....................................................11
 2.2  實驗方法.....................................................12
 2.2.1還原力..................................................12
 2.2.2 超氧陰離子自由基........................................13
 2.2.3 羥基自由基的生成和清除實驗..............................14
3. 結果與討論...........................................................16
 3.1  實驗數據.......................................................16
 3.1.1還原力....................................................16
 3.1.2 超氧陰離子自由基.........................................18
 3.1.3 羥基自由基的生成和清除實驗...............................21
 3.2  數據結論........................................................23
4．總結與展望............................................................24
 3.1  實驗總結........................................................24
 3.2  實驗展望........................................................24
致謝.....................................................................25
參考文獻.................................................................26

摘要：類黃酮是一類天然的酚類化合物，以C6-C3-C6基本構造，分為黃酮（Flavone）、黃酮醇（Flavonols）、異黃酮、黃烷酮、原花色素、查兒酮。他是植物合成的一種次生代謝產物，它以結合態(黃酮苷)或自由態(黃酮苷元)形式存在于蔬菜和茶葉等許多食源性植物中.目前已知化學結構的有6000多種。近年來由于發現黃酮類化合物具有人體保健與疾病治療功能受到普遍重視， 如類黃酮可軟化血管、抗癌、抗氧化及消除體內自由基等。類黃酮系天然存在于蔬菜、水果、茶葉及葡萄酒等飲料中的多酚抗氧化劑。
 本次實驗以桑色素（morin），柚皮素（naringenin）和白楊黃素（chrysin）為研究對象，利用還原力, 超氧陰離子自由基和羥基自由基礎的生成和清除抗氧化模型，研究類黃酮化合物的抗氧化活性。
 
關鍵詞：類黃酮；抗氧化性；吸光度

Abstract：Flavonoids are a group of more than 6000 polyphenolic compounds that occur naturally in foods of plant origin. These compounds possess a common phenylbenzopyrone structure (C6-C3-C6), and they are categorized according to the saturation level and opening of the central pyranring, into flavonesflavanols, isoflavones, flavonols, flavanones, and flavanonols. It’s a phytosynthesis secondary metabolite, existing in vegetables, tea and many other food-borne plants in the form of its bond (flavonoids glycoside) or free state (flavonoids million). In recent years, the discovery flavonoids with human health and disease treatment of functional are to be universal. Flavonoids might soften the blood vessel, had the anticancer, antioxidant activities and eliminated free radical.Flavonoids are the natural polyphenol antioxidants in drink, vegetables, fruit, tea and grape wine.
 In this paper, morin, naringenin and chrysin are researched antioxidant activity, using the reducing power, superoxide anion radical and hydroxyl radical models.

Keywords：Flavonoid; Antioxygenation; Absorbance