中文摘要：

为了提高黄秋葵花中多酚的提取效率及其开发利用价值,以黄秋葵花为材料,采用均匀试验设计优化黄秋葵花中多酚的超声波辅助浸提工艺,同时考察其还原力和超氧阴离子自由基（O2^-·）清除能力。结果表明：超声波辅助提取黄秋葵花中多酚的最优工艺为：料液比1∶35,乙醇浓度55%,超声时间22min,在此工艺条件下多酚的提取得率为4.28%。所得的黄秋葵花多酚具有较强的抗氧化性,0.2mg/m L样液的总还原力达到0.672,超氧阴离子自由基清除率为13.13%。因此,采用超声辅助提取黄秋葵花多酚提取工艺稳定可行,为黄秋葵花的进一步开发利用奠定基础。

英文摘要：

In order to enhance extraction efficiency and utility value of phenolic compound in okra flower, optimization of supersonic assisted extraction were studied by uniform design methodology, simultaneously, antioxidant properties of okra flower phenolic compound were investigated including reducing power and the capacity of scavenging superoxide anion radicals （O2^- · ）. Results showed that the optimal process parameters of supersonic assisted extraction in okra flower were as follows ： the rate of sample to solvent was 1 ： 35, the ethanol concentration was 55%, the supersonic time was 22 min, and under this optimal process the extraction rate of phenolic compound was 4.28%. Moreover, phenolic compound obtained okra flower had stronger antioxidant properties, reducing power of 0.2mg/mL extraction fluid reached 0.672 and the rate of scavenging O2·^- was 13.13%. Therefore the extraction technology of polyphenol from okra flower is stable and applicable, the result contributed to the development and utilization of polyphenol from okra flower.