联合提取分离苹果渣果胶和多酚工艺优化(英文)  

Optimization of combined extraction and separation of pectins and polyphenols from apple pomace

作　　者：王鸥[1] 魏颖[2] 张迪[1] 周峰[1] 籍保平[1] 

机构地区：[1]中国农业大学食品与营养工程学院,北京100083 [2]中国食品发酵工业研究院,北京100027

出　　处：《农业工程学报》2012年第23期286-292,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：National Key Technology R&D Program for the 12th five-year plan (Project NO. 2011BAD08B03-01)

摘　　要：为研究从苹果渣中联合提取和分离果胶和多酚的最优工艺条件,该文利用酸提法从干燥的苹果渣中提取果胶和多酚,并利用疏水性大孔树脂进行分离。结合一种基于区间数多决策属性的评价方法优化提取分离过程。提取参数为果胶的产量和多酚的产量;分离参数包括:多酚吸附率、果胶吸附率和果胶的色泽变化。经优化后,提取的最优性条件为:pH值2.0,温度95℃,提取时间1.5h和料液比1:20(g/mL)。果胶、多酚物质的平均提取得率为196.49和10.98mg/g,分别占单一提取产率的92.28%和85.92%。经优化得出:最佳的大孔树脂是XDA-5。根据最优分离条件可得到提取液中98.32%果胶和92.15%多酚。结果表明,多属性决策理论的评价方法应用在提取分离苹果渣是可行的,可减少试验量。In order to investigate the optimal process conditions for the combined recovery of pectins and polyphenols from apple pomace of apple juice by-product, the dried apple pomace was extracted with acid method and separated by a hydrophobic styrene macroporous resin. The factors affecting extraction yield, including pH value, temperature, extracting time and solid/liquid ratio were analyzed to optimize the co-extraction technologies. The evaluation index included extraction rate on the yield of pectins and polyphenols, and separation rate on the polyphenol adsorption, pectin adsorption and pectin chroma. The different extraction technologies and six macroporous resins were evaluated using the method of multiple attribute decision making （MADM） algorithm based on interval number. The optimal conditions of combined extraction were obtained with pH value 2.0, temperature 95~C, time 1.5 h and solid/liquid ratio 1：20 （g/mL）. The mean pectin and polyphenol yields were 196.49 and 10.98 mg/g respectively, which possessing 92.28% and 85.92% of the highest single extraction yields. The optimal macroporous resin was XDA-5 for separation. According to the optimal separation conditions, the recovery of pectins and polyphenols were 98.32% and 92.15% of extraction sample. The results showed that application of MADM in the technology optimization can provide a reference for industrial production of recovery pectins and polyphenols from apple pomace simultaneously.

关 键 词：优化 提取 分离 大孔树脂 多酚 果胶 苹果渣 多属性决策理论 

分 类 号：X705[环境科学与工程—环境工程]