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yzdjyj鐵桿木蟲(chóng) (正式寫(xiě)手)
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[求助]
求把中文摘要翻譯成英文,謝謝!
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| 本文采用乙醇浸提、大孔樹(shù)脂純化制備烏飯樹(shù)葉提取物,考察其在不同體系中的抗氧化活性,并對(duì)提取物的主要成分進(jìn)行HPLC分析。結(jié)果表明,烏飯樹(shù)葉提取物具有較高的抗氧化能力,其清除DPPH自由基能力與Vc相當(dāng),總抗氧化能力、還原力、抗脂質(zhì)過(guò)氧化能力和清除羥自由基能力與待測(cè)物濃度存在明顯的量效關(guān)系。HPLC結(jié)果表明烏飯樹(shù)葉提取物中主要存在異槲皮苷、槲皮素和山奈酚等3種黃酮類化合物,其含量分別為267.8,61.6和98.0mg/g。 |

捐助貴賓 (著名寫(xiě)手)
商家已經(jīng)主動(dòng)聲明此回帖可能含有宣傳內(nèi)容| In this paper, we prepared the vaccinium bracteatum leaf extract using methods of ethanol extraction and macroreticular resin purification, explored the antioxidant activity of vaccinium bracteatum leaf extract in different systems, and conducted HPLC analysis on the major components of the extract. The results show that the vaccinium bracteatum leaf extract is of high antioxidant activity, and equals Vc in terms of the ability in scavenging DPPH free radical, and in addition, the total antioxidant capacity, reducing power, anti-lipid peroxidation ability,free radical scavenging ability are in apparent dose-effect relationship with the concentration of the sample. HPLC analysis results indicate the major components of the vaccinium bracteatum leaf extract are flavonoids compounds including isoquercitrin (267.8mg/g), quercetin (61.6mg/g), and kaempferol (98.0mg/g). |
鐵桿木蟲(chóng) (正式寫(xiě)手)

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