Extraction Technology and Antioxidant Activity of Total Flavonoids in Huai Chrysanthemum

With fresh Huai chrysanthemum as raw material,rutin as reference and aluminum nitrate as a reagent,extraction conditions of totoal flaconoids in Huai chrysanthemum by othjrogonal design were optimized.Ultrasonic extraction and bath deposition were used to extract total flavonoids in Huai chrysanthemum,influences of single factor on extraction rates of total flaconoids were studied, and the best extraction-conditions of flavonoids were confirmed.Iodometric method was used to investigate the oxidation resistance on lard.The extracted total flavonoids by bath deposition used A_1B_1C_3 combination as optimal extraction conditions,and extraction rate was 109.74mg/g.The extracted total flavonoids by ultrasonic extraction used A_2B_2C_2 combination as optimal extraction conditions,and extraction rate was 114.47mg/g.The experimental results show that ultrasonic extraction is better than the bath deposition extraction method,and Huai chrysanthemum flavonoids have the antioxidant capacity on lard.