Drying methods of resveratrol extracted from Polygonum cuspidatum were studied.The best method is vacuum frozen-drying method with recovering rate of 97.28%.

• 通过对虎杖白藜芦醇的提取物干燥方法的比较研究；筛选出真空冷冻干燥为虎杖白藜芦醇的最佳干燥方法；其回收率达97.；28%25。