关键词: 柚子皮, 黄酮类化合物, 超声波法

Abstract: Pomelo peel contains many kinds of active ingredients, such as pecitin, dietary fiber, essential oil, polysaccharide and flavonoids, which has high medicinal and edible value. Reasonable development, utilization and deep processing using pomelo peel as material, could not only reduce the environment pollution, but also create good economic and social benefits. This experiment extracted flavonoids from the pomelo peel using the ultrasonic method, and studied the influence factors in the process of pomelo peel flavonoids extraction. Through the single factor and orthogonal experiment method to study the optimal extraction technological parameter, results showed that the optimal parameters were as follows: ethanol concentration was 80%, ultrasonic treatment time was 30 min, soaking temperature was 60℃, solid to liquid ratio was 1:25, and the yield of flavonoid was 4.63%.

Key words: pomelo peel, flavonoid, ultrasonic-assisted