菊芋菊糖脫色工藝的優化

張超，欒興社，鐘傳青，王書燕

摘要：研究了5種樹脂對菊芋（Jerusalem artichoke）菊糖溶液中色素脫除效果，通過單因素試驗和正交試驗對其脫色條件進行優化。結果表明，采用樹脂D3520，在pH 6、40 ℃下，菊芋菊糖溶液的脫色率可達到80.51%，菊糖保留率為70.49%，樹脂對菊芋菊糖中色素的吸附為單分子吸附，符合Langmuir吸附等溫式，其吸附動力學符合擴散方程。

關鍵詞：菊芋（Jerusalem artichoke）菊糖；脫色；樹脂；吸附平衡；吸附動力學

中圖分類號：TS202 文獻標識碼：A 文章編號：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