采用水提醇沉法,通过单因素和正交试验,对提取黄鳞多孔菌粗多糖的最佳方法进行了筛选,并采用DPPH法对其抗氧化能力进行了测定。结果表明,提取黄鳞多孔菌粗多糖最佳工艺条件为微波时间4 min,料液比1∶45,提取次数2次,粗多糖的得率达到39.42 mg·g-1。当黄鳞多孔菌粗多糖溶液浓度为0.8 mg·m L-1时,抗氧化活性为42.86%,且提取液中粗多糖的含量与抗氧化活性成正比。 Water extraction alcohol precipitation method, through single factor and orthogonal test, the best method for extracting crude polysaccharide polysaccharide was screened, and its antioxidant capacity was determined by DPPH method. The results showed that the optimum extraction conditions were as follows: microwave time 4 min, solid-liquid ratio 1:45, extraction times 2 times and crude polysaccharide yield 39.42 mg · g-1. When the crude polysaccharide concentration of Pycnoporus sp. Was 0.8 mg · m L-1, the antioxidant activity was 42.86%, and the crude polysaccharide content in the extract was proportional to the antioxidant activity.