苹果皮制备苹果多酚联产果胶的工艺研究  

Study on sequential extraction of polyphenol and pectin from apple peel

作　　者：王小宏 李宁[2] 韩瑞[2] 孟永宏[2] 邓红[2] 郭玉蓉[2] 仇农学[2] 

机构地区：[1]天水长城果汁集团有限公司,甘肃天水741024 [2]陕西师范大学食品工程与营养科学学院,陕西西安710062

出　　处：《食品工业科技》2013年第19期201-206,共6页Science and Technology of Food Industry

基　　金：甘肃省科技计划(1009NTGE032);陕西省科技统筹计划(2011KTCQ02-04);农业部苹果体系(CARS-28)项目资助

摘　　要：以干燥的苹果皮为原料,对其同时生产苹果多酚、果胶的新工艺进行了研究。苹果多酚采用超声波辅助提取法,确定其最优料液比1∶20(g/mL),提取温度63℃,提取液乙醇浓度60%,提取时间58min,后选用树脂法吸附分离纯化苹果皮多酚,探讨了静态、动态条件下树脂吸附、洗脱苹果皮多酚的特性及条件,在此条件下多酚的提取量高达18.29mg/g,多酚纯度达到52.56%;然后采用离子交换树脂辅助酸解法提取苹果皮果胶,确定最佳工艺条件为:树脂用量为11%,pH1.3,提取时间2.0h,提取温度75℃,料液比1∶24(g/mL),随后对果胶液超滤浓缩,冷冻干燥,此条件下果胶得率高达26.26%。从苹果皮中连续提取和分离多酚、果胶的工艺具有良好的工业化生产潜力,应用前景广阔。The new method of sequential producing polyphenol and pectin from dried apple peel was researched.The polyphenol extraction experiment showed that the polyphenol yield rate got to 18.29mg/g when apple peel were extracted with 20 times volume of 60% ethanol solution at 63℃ and 58min in ultrasonic bath, and the content of polyphenol was 52.56% purified with LX-36 absorption resin.Subsequently,extraction of pectin was performed with ion exchange resin-assisted protocol at resin content 11 %, pHi.3,2.0h,75℃, solid-liquid ratio 1：24 （g/mL） ,and ultimately the yield of pectin got to 26.26% after ultra filtration.The sequential extraction could take full advantage of apple nutrition and have a good potential for industrial production.

关 键 词：苹果皮 多酚 果胶 

分 类 号：TS255.44[轻工技术与工程—农产品加工及贮藏工程]