苹果渣果胶树脂吸附静态与动态脱色工艺研究  

Study on decolorization technology of static and dynamic adsorption of apple pomace pectin using resin

作　　者：韩瑞[1] 邓红[1] 周文珊[1] 郭玉蓉[1] 

机构地区：[1]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》2010年第6期254-258,共5页Science and Technology of Food Industry

基　　金：陕西师范大学优秀科技预研项目(200802020);农业部现代苹果产业体系(nycytx-08)

摘　　要：以XDA-7大孔树脂为吸附剂,研究了苹果渣果胶的脱色工艺。分别探讨了在静态与动态条件下,XDA-7型树脂对苹果渣果胶的吸附脱色能力。实验结果表明:XDA-7树脂对果胶提取液有较好的吸附脱色效果,损失率较低,静态脱色的最佳工艺参数为:XDA-7树脂用量14g/100mL(果胶液),pH1.0,温度40℃,时间630min,脱色率为36.17%,损失率为3.70%;动态脱色的最佳工艺参数为:流速4.5BV/h,处理量2.5BV,上柱液pH1.0,温度35℃,脱色率为61.66%,损失率为3.05%。在最佳动态工艺条件下脱色的果胶提取液经醇沉和冷冻干燥后,其成品色泽符合QB2484-2000标准。The decolorization processing of apple pomace pectin was studied using XDA- 7 macroporous adsorption resin as adsorbent.The static and dynamic adsorption process conditions on decolorization capacity of the resin for pectin were discussed separately.The experimental results showed that-XDA-7 resin had a better decolorization absorption effects for apple pomace pectin and a lower loss rate.The static decolorization process parameters were as followsresin dosage 14g/100mL（ protein solution）, pH 1.0,temperature40℃, decoloration time 630rain,the decolorization rate was 36.17% and the loss rate was 3.70%.The dynamic decolorization process parameters were as follows： the velocity 4.5 BV/h, process load 2.5 BV, pH of column liquid 1.0, temperature35 ℃, the decolorization rate was up to 61.66% and the loss rate was only 3.05%.The product＇ s color of pectin was fit in with the QB2484-2000 standards through the treatment of ethanol precipitation and freeze -drying processing.

关 键 词：苹果渣 果胶 大孔吸附树脂 脱色 

分 类 号：TS201.1[轻工技术与工程—食品科学]