采用微波、超声波和常规加热回流三种不同方法提取板栗花中有效成分，通过自由基体系和亚硝酸盐体系研究板栗花粗提物的抗氧化性能。结果表明，三种提取方法获得的板栗花粗提物都具有良好的抗氧化活性，均能有效清除DPPH•和•OH，其最高清除率分别达92.8%和54.3%；3种提取物对清除亚硝酸盐及阻隔亚硝胺合成也有较好的效果，最高可达72.9%和89.9%，但对O2-•的清除作用都不明显。

The effective component was extracted from chestnut flower by three methods, including microwave, ultrasound and conventional reflux extraction. The antioxidant activities of the crude extracts were studied through free radical system and nitrite system. The results showed that all of the crude extracts of chestnut flower obtained by the three extraction methods had good antioxidant activity, which could effectively eliminate DPPH• and •OH with the maximal elimination-rate being of 92.8% and 54.3%, respectively. Besides, the three kinds of extracts could eliminate the nitrite and block the synthesis of nitrosamine with the highest elimination rate and blocking rate being of 72.9% and 89.9%, respectively, while they had little effect on the elimination of O2-•.