菊芋菊糖脱色工艺的优化

张超，栾兴社，钟传青，王书燕

摘要：研究了5种树脂对菊芋（Jerusalem artichoke）菊糖溶液中色素脱除效果，通过单因素试验和正交试验对其脱色条件进行优化。结果表明，采用树脂D3520，在pH 6、40 ℃下，菊芋菊糖溶液的脱色率可达到80.51%，菊糖保留率为70.49%，树脂对菊芋菊糖中色素的吸附为单分子吸附，符合Langmuir吸附等温式，其吸附动力学符合扩散方程。

关键词：菊芋（Jerusalem artichoke）菊糖；脱色；树脂；吸附平衡；吸附动力学

中图分类号：TS202 文献标识码：A 文章编号：0439-8114（2013）05-1137-04

Optimization of Decoloration Technology of Inulin Oligosaccharide

ZHANG Chao，LUAN Xing-she，ZHONG Chuan-qing，WANG Shu-yan

（School of Municipal and Environmental Engineering， Shandong Jianzhu University， Jinan 250101， China）

Abstract： The decoloration effects of five kinds of resin on inulin（Jerusalem artichoke） oligosaccharides were investigated； and the decoloration technology was optimized by single factor test and orthogonal experiment. The results showed that adsorption effect of D3520 resin was the best. The optimum decoloration parameters were temperature 40 ℃ and pH 6. The decoloration rate was 80.51%， while the polysaccharides retention rate was 70.49%. The adsorption of pigment in inulin oligosaccharides was accord with single molecule adsorption and Langmuir isotherms equation， the adsorption dynamics was accord with diffusion equation.

Key words： inulin（Jerusalem artichoke） oligosaccharide； decoloration； resin； adsorption equilibrium； adsorption dynamic