Study on the extraction of flavonoid compound in orange peel and it's antioxidant property

The extraction conditions and antioxidation property of flavones from orange peel were studied in this paper,the extracting ratio of flavonoids was taken as the index for investigation and table L9(34) was used to conduct the orthogonal experiment,So as to select optimum extraction process of flavonoids from orange peel.Meanwhile,the antioxidant activity was studied by using thio barbituric acid(TBA) method and storage in baking oven on linoleic acid was studied with.The results showed that the optimum extraction process were as follows: 70%alcohol,extraction time 1.5 h,the solid-liquid ratio was 1:20,extraction temperature 80 ℃,that the flavonoid in orange peel was 2.689% of the dry weight;Antioxidation test showed that the flavonoids in orange peel had a stronger ability what could effectively inhibit sesame oil and lard oil autoxidation,exhibits a favorable antioxidant activity.It provided scientific basis for using orange peel to produce medicinal components of flavones.