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題名 | Effect of an Osmanthus fragrans Flower Beverage on the Antioxidant Activity in Healthy Individuals=桂花飲料對健康受試者抗氧化能力的影響 |
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作者 | 李國玉; 蔡侑澄; 洪千雅; Li, Kuo-yu; Tsai, Yu-cheng; Hung, Chien-ya; |
期刊 | 臺灣農業化學與食品科學 |
出版日期 | 20130200 |
卷期 | 51:1 2013.02[民102.02] |
頁次 | 頁7-16 |
分類號 | 463.84 |
語文 | eng |
關鍵詞 | 桂花; 桂花飲料; 抗氧化能力; 總抗氧化能力; 麩胱甘肽; Osmanthus fragrans; Flower beverage; Antioxidant activity; Oxygen radical absorbance capacity; Glutathione; |
中文摘要 | 本研究評估富含總多酚及強抗氧化能力的桂花飲料,對於調節健康受試者血漿中抗氧化狀態的效果。將20個健康志願者隨機分成三組:低劑量桂花飲料(LD,1 g乾燥桂花以1,000 mL沸水浸泡20分鐘)、高劑量桂花飲料(LD,2 g乾燥桂花以1,000 mL沸水浸泡20分鐘),及控制組(1,000 mL沸水),連續飲用七天後,測試血漿中總抗氧化能力(ORAC)、GSH、GSSG、GSH/GSSG ratio、GPx及SOD等抗氧化活性之變化。結果顯示,高劑量組受試者顯著提高血漿中ORAC(35.4%, p < 0.01)、GSH(18.9%, p < 0.01)、GSH/GSSG ratio(52.7%, p < 0.05)及GPx(90.7%, p < 0.01),而GSSG(21.9%, p < 0.05)顯著降低,SOD則無顯著變化。本結果證實飲用高抗氧化能力的桂花飲料連續七天,具有提高健康受試者抗氧化防禦能力方面的假說。 |
英文摘要 | This study evaluated the ability of an Osmanthus fragrans flower beverage, high in polyphenols and antioxidants, to modulate the plasma antioxidant status in healthy subjects. The hypothesis that Osmanthus fragrans flower beverage supplementation would upregulate antioxidant parameters (ORAC, GSH, GSSG, GSH/GSSG ratio, GPx and SOD) in adults was tested. Twenty healthy volunteers were randomly assigned to receive one of the followings for 7 days: low-dose Osmanthus fragrans flower beverage (LD, brewing 1 g of dry Osmanthus fragrans flower in 1,000 mL of boiling water for 20 min), high-dose flower beverage (HD, brewing 2 g of dry Osmanthus fragrans flower in 1,000 mL of boiling water for 20 min) and control (1,000 mL of water only). The result showed a highly significant increase of plasma ORAC (35.4%, p < 0.01), GSH (18.9%, p < 0.01), GSH/GSSG ratio (52.7%, p < 0.05), and GPx (90.7%, p < 0.01) in the HD group, a significant decrease in plasma GSSG (21.9%, p < 0.05), but no difference in plasma SOD activity. These results support the hypothesis that consumption of 1 cup a day of Osmanthus fragrans flower beverage for 7 days may increase the antioxidant defenses in healthy individuals. |
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