[Objective] The aim of the study was to investigate extraction optimization and antioxidant activity of polyphenol in okra flower in order to enhance extraction efficiency and developing value of okra flower. [Method]...[Objective] The aim of the study was to investigate extraction optimization and antioxidant activity of polyphenol in okra flower in order to enhance extraction efficiency and developing value of okra flower. [Method] Optimization of supersonic assisted extraction of phenolic compound in okra flower was investigated using uniform design methodology, and its antioxidant activity was analyzed including reducing power and the capacity of scavenging superoxide anion radicals（O-2·）. [Result]The optimal process parameters of supersonic assisted extraction were as follows：ratio of sample to solvent of 1：35, ethanol concentration of 55%, supersonic time of22 min, and in the extraction condition the experimental yield of phenolic compound was 4.28%. Moreover, phenolic compound in okra flower exhibited stronger antioxidant activities, reducing power of 0.2 mg/ml extraction fluid reached 0.672 and the rate of scavenging O-2· was 13.13%. [Conclusion] The optimization of extraction technology of phenolic compound in okra flower is simple and reliable, the result contributes to the development of phenolic compound in okra flower.展开更多
基金Supported by Science and Technology Project of Guangdong Province(No.2014B040404027)Science and Technology Project of Gaozhou City(No.2014005)~~
文摘[Objective] The aim of the study was to investigate extraction optimization and antioxidant activity of polyphenol in okra flower in order to enhance extraction efficiency and developing value of okra flower. [Method] Optimization of supersonic assisted extraction of phenolic compound in okra flower was investigated using uniform design methodology, and its antioxidant activity was analyzed including reducing power and the capacity of scavenging superoxide anion radicals（O-2·）. [Result]The optimal process parameters of supersonic assisted extraction were as follows：ratio of sample to solvent of 1：35, ethanol concentration of 55%, supersonic time of22 min, and in the extraction condition the experimental yield of phenolic compound was 4.28%. Moreover, phenolic compound in okra flower exhibited stronger antioxidant activities, reducing power of 0.2 mg/ml extraction fluid reached 0.672 and the rate of scavenging O-2· was 13.13%. [Conclusion] The optimization of extraction technology of phenolic compound in okra flower is simple and reliable, the result contributes to the development of phenolic compound in okra flower.
