河南农业科学2012，Vol.41Issue(11)：117-120,4.
芍药花粉提取物的抗氧化能力研究
Study on Antioxidant Capacity of Peony Pollen Extracts
摘要
Abstract
To explore antioxidant activity of the extracts from peony pollen,and to reveal the experimental and theoretic basis for exploitation of peony pollen in natural antioxidant and cosmetics applications,the extracts were prepared from peony pollen by different volume fraction of ethanol, and the contents of flavonoids and polyphenols were determined. Antioxidant capacities of different extracts were evaluated by DPPH and hydroxy free radicals elimination methods. Also, the relations between their contents and antioxidant activities were analyzed. The extracts had certain scavenging effects on DPPH and hydroxy free radicals,and also the scavenging capability was enhanced with the increase of concentration. Under the high concentration(0. 8 g/L),the 70% ethanol extract gave the best result of elimination of the DPPH free radical, scavenging rate achieving 79. 88%. The elimination of the hydroxyl free radical of 30% ethanol extract was the strongest, achieving 93. 82%. The contents of flavonoids and polyphenols in 70% ethanol extract were superior to the others obviously. 70% ethanol was ideal solvent to prepare the extract from peony pollen. There was a remarkable linearity between antioxidant capacities and the contents of flavonoids, but the relation was not close between antioxidant capacities and polyphenols.关键词
芍药/花粉提取液/抗氧化能力/DPPH自由基/羟自由基Key words
peony/pollen extract/antioxidant capacity/DPPH free radical/hydroxy free radical分类
农业科技引用本文复制引用
黄海霞,张亚坤,张丹丹,冯蒙,安梦晓..芍药花粉提取物的抗氧化能力研究[J].河南农业科学,2012,41(11):117-120,4.基金项目
河南科技大学SRTP项目(No2010182) （No2010182）
