壳聚糖/蒙脱土复合糖用澄清剂的制备工艺及优化  

Preparation technology and optimization of chitosan/montmorillonite composite as sugarcane clarifying agent

作　　者：黄承都[1,2] 艾硕 黄永春 任仙娥[1,2] 张昆明 刘纯友[1,2] HUANG Cheng-du;AI Shuo;HUANG Yong-chun;REN Xian-e;ZHANG Kun-ming;LIU Chun-you(Guangxi Key Laboratory of Green Processing of Sugar Resources(Guangxi University of Science and Technology),Liuzhou 545006;Province and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry,Nanning 530004)

机构地区：[1]广西糖资源绿色加工重点实验室(广西科技大学),柳州545006 [2]蔗糖产业省部共建协同创新中心,南宁530004

出　　处：《中国食品添加剂》2020年第4期35-41,共7页China Food Additives

基　　金：广西自然科学基金联合资助培育项目(2018GXNSFAA138107);广西高等学校高水平创新团队及卓越学者计划资助项目(桂教人〔2014〕7号)。

摘　　要：以壳聚糖(chitosan,CTS)、蒙脱土(montmorillonite,MMT)为原料进行复合改性制得糖用CTS/MMT复合澄清剂,将糖汁的脱色效果作为指标,分别考察CTS/MMT材料制备的反应温度、反应时间、壳聚糖的用量和乙酸浓度等因素对其糖汁脱色的影响,并采用正交试验进一步优化其制备工艺,获得最优条件为:反应温度40℃、反应时间4 h、壳聚糖的用量2.5 g、乙酸浓度1.5%。通过扫描电镜、红外光谱、X射线衍射和热重数据分析对CTS/MMT进行结构表征,结果证明壳聚糖较均匀分布于蒙脱土的表面,负载量为28%,CTS/MMT仍保持蒙脱土的多孔结构。Chitosan/montmorillonite(CTS/MMT)composite was prepared with chitosan solution(CTS)and montmorillonite(MMT).With the decolorization ratio of sugar juice as an index,the effects of reaction temperature,reaction time,chitosan dosage and acetic acid concentration on the decolorization of sugar juice were investigated.The optimum conditions were obtained as follows:temperature 40℃,reaction time 4h,amount of chitosan 2.5g,acetic acid concentration 1.5%.The structure of CTS/MMT composite was characterized by scanning electron microscopy,infrared spectroscopy,X-ray diffraction and thermogravimetry.The results showed that chitosan was uniformly distributed on the surface of montmorillonite with the chitosan loading amount of 28%.The CTS/MMT composite still retained the porous structure of montmorillonite.

关 键 词：壳聚糖/蒙脱土复合物 澄清剂 糖汁 脱色率 工艺优化 

分 类 号：TS244.2[轻工技术与工程—制糖工程]