食品科学 ›› 2012, Vol. 33 ›› Issue (24): 152-155.doi: 10.7506/spkx1002-6630-201224031

• 工艺技术 • 上一篇    下一篇

玫瑰黄酮的提取及其清除DPPH自由基活性研究

杨虎,张生堂,高国强*   

  1. 兰州工业研究院,甘肃 兰州 730050
  • 收稿日期:2011-11-15 修回日期:2012-11-20 出版日期:2012-12-25 发布日期:2012-12-12
  • 通讯作者: 高国强 E-mail:gaogong506@126.com

Extraction and DPPH Radical Scavenging Activity of Flavonoids from Rose Flower Buds

YANG Hu,ZHANG Sheng-tang,GAO Guo-qiang   

  1. Lanzhou Industry Research Institute, Lanzhou 730050, China
  • Received:2011-11-15 Revised:2012-11-20 Online:2012-12-25 Published:2012-12-12

摘要:

采用正交试验研究玫瑰黄酮的最佳提取条件,同时以VC和VE为对照,评价玫瑰黄酮清除1,1-二苯基苦基苯肼(DPPH自由基)的能力。结果表明玫瑰黄酮最佳的提取条件为:乙醇体积分数60%、液料比15:1、浸提温度40℃、提取时间1.5h,此时玫瑰黄酮提取率为40.87%、DPPH自由基清除率为88.28%。玫瑰黄酮对DPPH自由基有明显的清除作用,其对DPPH自由基的清除能力小于VC大于VE。玫瑰黄酮、VC和VE清除DPPH自由基的半数抑制浓度IC50分别为12.50、7.00mg/L和13.95mg/L。

关键词: 玫瑰黄酮, 提取, 正交试验, 自由基, 1,1-二苯基苦基苯肼

Abstract:

The purpose of this study was to optimize conditions for the extraction of flavonoids from rose flower buds and to explore the DPPH radical scavenging capacity of flavonoids from rose flower buds using vitamin C and vitamin E as controls. We established the optimal extraction conditions as follows: 60% ethanol as an extraction solvent at a solvent-to-solid ratio of 15:1 (mL/g), 40 ℃ and an extraction duration of 1.5 h. The extraction yield of flavonoids under the optimized conditions was 40.87% and the obtained extract revealed a DPPH radical scavenging rate of 88.28%. Its DPPH radical scavenging activity was inferior to that of VC but superior to that of VE and the IC50 values of these three antioxidants were 12.50, 7.00 mg/L and 13.95 mg/L, respectively.

Key words: rose flavonoids, extract, orthogonal array design, free radical, 1,1-diphenyl-2-picrylhydrazyl (DPPH)

中图分类号: