乙醇水溶液浸出棉籽粕中棉籽糖的实验研究  

Studies on Leaching Raffinose From Cottonseed Meal With the Solvent of Ethanol-water

作　　者：戴卫东[1] 汪守建[1] 卢伯南[1] 钱礼华[1] 

机构地区：[1]淮海工学院化学工程学院,江苏连云港222005

出　　处：《当代化工》2008年第5期471-473,477,共4页Contemporary Chemical Industry

基　　金：淮海工学院自然科学基金(Z2004046)

摘　　要：分别考察了不同浓度的乙醇水溶液、浸取温度、浸出时间和料液比的操作工艺条件对棉籽糖浸取率的影响。结果表明,低浓度的乙醇水溶液、较高的温度、较长的浸出时间、较大的料液比有利于棉籽糖的浸出。较佳的操作条件为:乙醇溶液浓度为80%,提取温度为55℃,浸出时间为2.5h,提取料液比为1:12(W/V),棉籽糖的浸出率可达90%以上。Raffinose is soluble in water, acetone, ethanol-water solution and other polar soutions. Protein of cottonseed meal is also dissolved. Therefore, ethanol-water solution was chosen as a solvent to leach raffinose of cot- tonseed meal. The leaching rate of raffmose were investigated under different ethanol concentrations in ethanol-water solution,leaching temperature,extraction time and cottonseed-meal/ sovent ratio. The results showed that lower concentrations of ethanol-water, higher temperature, longer time, larger cottonseed-meal/solvent ratio comduce to increasing raffinose leaching yield. Better operating conditions was ethanol concentration of 80%, temperature of 55 ℃ extraction, time of 2.5h extraction, solid-liquid ratio of 1：12. The extraction rate of raffinose was to 90%.

关 键 词：棉籽粕 棉籽糖 浸出 乙醇溶液 

分 类 号：TQ645.9[化学工程—精细化工]