超声辅助离子液体提取玉米须中的多酚

Extraction of Polyphenol from Corn Silk by Ultrasonic Assisted Ion Liquid

多酚又称植物单宁,是一类植物体内能够广泛提取的多元酚化合物。玉米须中含有大量的多酚物质,提取其中的有效成分可提高玉米须的使用价值,使其在食品、医疗和保健等方面均具有可观的发展前景。文章以玉米须为原材料,采用离子液体辅助超声波法提取玉米须中的多酚化合物,并对提取工艺进行了研究。在对单因素进行考察的基础上,使用响应面法进一步确定最佳工艺条件,最终获得的最佳工艺条件为:离子液体浓度0.48 mol/L,提取时间23 min,料液比1:10,以57%乙醇为提取剂,此条件下能够得到最佳提取率为32.46μg/m L。该操作方法安全便捷、对环境无污染,是有极大推广价值的方法。

Polyphenols,also known as plant tannins,are a kind of polyphenol compounds that can be widely extracted from plants.Corn silk contain a large amount of polyphenols.Extracting the effective components from them can improve the use value of corn silk,making them have considerable development prospects in food,medical and health care.In this paper,the polyphenol compounds in corn silk were extracted by ultrasonic assisted ion liquid,and the extraction process was studied.The optimal extraction conditions were as follows:ionic liquid concentration 0.48 mol/L,extraction time 23 min,solid-liquid ratio 1:10,57% ethanol as extraction agent.Under these conditions,the optimal extraction rate was 32.46μg/mL.This method is safe,convenient and pollution-free,which is an method of great generalization value.