活性炭吸附棉籽糖液中色素的工艺研究  

Adsorption technology study of pigment from raffinose solution by active carbon

作　　者：戴卫东[1] 钱礼华[1] 汪守建[1] 

机构地区：[1]淮海工学院化学工程学院,连云港222005

出　　处：《食品科技》2009年第9期213-216,共4页Food Science and Technology

基　　金：淮海工学院自然科学基金项目(Z2004046)

摘　　要：经过超滤浓缩的棉籽糖液还有较高的游离棉酚和类酚色素，使得棉籽糖结晶困难，并影响棉籽糖产品的最终色泽。为了提高棉籽糖产品的质量，对超滤后浓缩的棉籽糖液，采用活性炭脱色。分别考察了活性炭的用量（1％～6％）、吸附温度（20～70℃）、滤液的pH值（4．0～6．5）、吸附时间（1．0～3．5h）等对脱色效果的影响。结果表明，较大的活性炭用量、较高的温度、酸性的滤液、一定的脱色时间有利于提高脱色效果。确定较好的操作工艺条件为：活性炭添加量4％～5％、脱色温度50～60℃、pH值4．0～5．0、脱色时间2h以上，脱色率可到达85％以上，且脱色液中几乎检测不到游离棉酚的存在。A adsorption method to decolorize raffinose solution was used by active carbon. Decolorzing effect were investigated under actived carbon amount 1% -6%, adsorption temperature 20 -70 ℃, pH4.0 -6.5, adsorption 1.0-3.5 h conditions. The results showed that larger amount of activated carbon, higher temperature, acidity in the filtrate, longer time was conductive to decolorization. The better operating conditions were as follows： the amount of activated carbon 4%-5%, the temperature 50-60 ℃, the pH 4.0-5.0, the adsorption time over 2 hours. The decolorization rate could be more than 85%, and the free gossypol could not be detected in the raffinose solution.

关 键 词：棉籽糖液 活性炭 吸附 脱色 棉酚 

分 类 号：TQ645.9[化学工程—精细化工]