Study on the Extraction Method of Flavonoid Compounds in Orychragmusviolaceus and its Antioxidation

The aim was to study the extraction method of flavonoid compounds in Orychragmusviolaceus and its antioxidation.The optimum extraction method was obtained through extracting the flavonoid compounds from Orychragmusviolaceus with 3 kinds of methods and comparing their extraction rates and contents.The antioxidation of flavonoid compounds in Orychragmusviolaceus was also studied.Among 3 kinds of extraction methods,the extracts by microwave-assisted extraction with 70% ethanol solution had lightest color,most flavonoid compounds,being 86.30 mg/g and highest extraction rate,being 16.8%.Its extracting conditions were as follows:70% ethanol solution,ratio of solid to solution of 1 g∶10 ml,microwave power at 600 W and for 4 min.The antioxidation capacities of extractions by 3 kinds of methods on lard were microwave-assisted extraction with 70% ethanol solution alcohol quench method water extraction.The microwave-assisted extraction with 70% ethanol solution was better extraction method.The flavonoid compounds in Orychragmusviolaceus had stronger antioxidation effect on lard and had dose-effect relationship with the concentration of flavone solution.