頁籤選單縮合
題 名 | Antioxidant Activities and Polyphenol Contents of Six Folk Medicinal Ferns used as “Gusuibu”=骨碎補類藥材之六種民俗藥用蕨類植物的抗氧化活性及其多酚類組成 |
---|---|
作 者 | 張宏祺; 黃冠中; 郭昭麟; 吳啟瑞; 蔡新聲; | 書刊名 | Botanical Studies |
卷 期 | 48:4 2007.10[民96.10] |
頁 次 | 頁397-406 |
分類號 | 378.13 |
關鍵詞 | 抗氧化活性; 骨碎補; 藥用蕨類; 多酚類組成; 清除自由基活性; 還原力; Antioxidant activity; Gusuibu; Medicinal fern; Polyphenols contents; Radical scavenging activity; Reducing capacity; |
語 文 | 英文(English) |
中文摘要 | 在傳統中草藥系統中,共有六種藥用蕨類植物被當做骨碎補類藥材,主要用於治療“骨”相關的疾病,但卻尚未有相關的科學研究進行綜合性的評估。本研究,分析這六種植物之乙醇及水萃取物的總抗氧化能力、清除 DPPH 自由基能力、還原力、總多酚類、總黃酮類、總黃酮醇類、總縮合單寧及原花青素類成分,結果顯示這六種來源植物間有極大的差異。大部分的水萃取物比乙醇萃取物具有較高的抗氧化潛力及較多的多酚類含量。比較六種來源植物之乙醇萃取物或水萃取物、兩者之間的還原力及清除DPPH 自由基能力,在 EC50的數據上均顯示具有顯著的差異性。海州骨碎補的水萃取物具有最高的總抗氧化活性 (1.27 mM TEAC)。總抗氧化活性與總多酚類成分間具有極高的相關係數(水粗萃物 R²=0.971及乙醇粗萃物 R²=0.981)。 |
英文摘要 | In the traditional Chinese system of medicine, the folk remedy "Gusuibu," renowned for its therapeutic effects on bone is sourced from six different ferns. However, no scientific investigation has been carried out so far, to evaluate the comparative values of these sources. In the present report, ethanol and aqueous extracts of these six sources were characterized for their antioxidant, scavenging activities, reducing power, total polyphenols, flavonols, flavonoids, condensed tannins, and proanthocyanidin contents. Results showed wide variation among the six sources. Most samples in aqueous extracts had higher antioxidant potencies and polyphenol contents than the ethanol extracts, indicating that the aqueous preparation of "Gusuibu" is more potent than the ethanol one. EC50 values of reducing capacities, and scavenging activities against DPPH radicals showed significant variation among the six sources, within ethanol or aqueous extracts and between the two solvents. The maximum (1.27) Trolox Equivalent Antioxidant Capacity (TEAC) was recorded in aqueous extract of fern Davallia mariesii. The correlation coefficient (R²) values of TEAC and total polyphenol contents showed a higher correlation (aqueous extract, R²=0.971; ethanol extract, R²=0.981). |
本系統中英文摘要資訊取自各篇刊載內容。