菠菜提取物抗氧化性研究

Antioxidant Activity of Spinach Extracts

摘要:

本文研究了菠菜的抗氧化性。采用不同极性溶剂对菠菜中的抗氧化性物质进行提取，测定不同极性提取物中的总酚﹑总黄酮含量及DPPH自由基清除率，发现95%乙醇提取效果最好。95%乙醇提取率为4.96%；总酚含量为39.60 µg/mg样品；总黄酮含量为17.53 µg/mg样品；终浓度0.5 mg/mL时对DPPH自由基的清除率为62.09%。

Abstract:

Antioxidant activity of spinach extracts was studied in this paper. Antioxidants from spinach were extracted by different polar organic solvent and the total phenolic compounds, total flavones and DPPH radical scavenging activity were all determined .It was found that the optimal ethanol concentration was 95%, with which the extracting ratio, content of total phenolic compounds and content of total flavones reached 4.96%, 39.60 µg/mg and 17.53 µg/mg, respectively. Besides, DPPH radical scavenging capacity was 62.09 % in 0.5 mg/mL extracts.