响应面法优化超声波辅助提取菠萝皮中黄酮

Optimizing ultrasound-assisted extraction of flavonoids from pineapple peels by response surface method

菠萝皮是菠萝加工的副产物,目前都是作为废弃物,污染环境的同时还浪费了资源。相关研究表明菠萝皮中富含黄酮类化合物。本研究以干菠萝皮渣为原料,采用超声波辅助提取菠萝皮中的总黄酮,通过响应曲面试验优化黄酮的提取条件。结果表明:各因素对提取率的影响大小为:料液比>乙醇浓度>超声功率>超声时间,确定的最佳提取工艺为:超声功率485W,超声时间26min,料液比为1∶51,乙醇浓度为44%,黄酮的提取率为2.7075%。

The pineapple peel was the waste of the pineapple processing and caused pollution of the environment. Research showed that flavoniods were rich in pineapple peel. Extraction of flavoniods from dry powder of pineapple peels by ultrasound assisted method was studied. The extraction conditions were optimized using response surface method （RSM） . The results showed ： solid-liquid ratio was the most important affecting factor, followed by ethanol concentration, followed by ultrasonic power, ultrasonic time had the weakest effect. The optimal extraction conditions were ;ultrasound power of 485W, ultrasound time 26rain, solid-liquid ratio 1 ： 51 and the ethanol concentration 44%, The yield of flavonoids were 2.7075%.