| 赤砂糖回溶糖浆硫酸镁—聚硅酸锌法脱色工艺及其机理研究 |
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| 引用本文： | 李慰霞,李利军,杨岚风,毛祥,程昊. 赤砂糖回溶糖浆硫酸镁—聚硅酸锌法脱色工艺及其机理研究[J]. 食品与机械, 2019, 0(2): 55-61 |
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| 作者姓名： | 李慰霞 李利军 杨岚风 毛祥 程昊 |
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| 作者单位： | 广西科技大学生物与化学工程学院;广西糖资源绿色加工重点实验室(广西科技大学);广西蔗糖产业协同创新中心;广西高校糖资源加工重点实验室(广西科技大学) |
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| 基金项目： | 国家自然科学基金（编号：31560466） |
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| 摘 要： | 以赤砂糖回溶糖浆为研究对象,研究了高pH条件下硫酸镁和两性含2%二氧化硅聚硅酸锌对回溶糖浆的脱色效果及机理。在单因素试验基础上,采用响应面分析法对脱色条件进行优化,获得最佳条件为:镁离子用量500mg/L、含2%二氧化硅的聚硅酸锌用量1.57%、pH值11、温度30℃。该条件下脱色率高达92.36%。采用扫描电子显微镜(SEM)和电位分析仪对混凝物和糖汁体系进行了表征,结果表明脱色机理为电中和吸附。
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| 关 键 词： | 硫酸镁；聚硅酸锌；脱色；絮凝；作用机理 |
| 收稿时间： | 2018-09-19 |
Technology and mechanism of decolorization for brown granulated sugar by magnesium sulfate-zinc polysilicate method |
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| LIWeixi,LILijun,YANGLanfeng,MAOXiang,CHENGHao. Technology and mechanism of decolorization for brown granulated sugar by magnesium sulfate-zinc polysilicate method[J]. Food and Machinery, 2019, 0(2): 55-61 |
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| Authors: | LIWeixi LILijun YANGLanfeng MAOXiang CHENGHao |
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| Affiliation: | College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China; Guangxi Key Laboratory of Green Processing of Sugar Resources, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China; Collaborative Innovation Center of Guangxi Sugar Industry, Nanning, Guangxi 530004, China; Key Laboratory for Processing of Sugar Resources of Guangxi Higher Education Institutes, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China |
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| Abstract: | The effect and mechanism of decolorization were studied with magnesium sulfate and amphoteric 2% polysilicate zinc on the brown granulated syrup under high pH conditions. The factors and levels of response surface analysis were determined on the basis of single factor tests. The decolorization process was optimized by response surface analysis to obtain the optimum process conditions: magnesium sulfate of 500 mg/L, dosage of 2% silica polysilicic acid zinc of 1.57%, and pH 11. Under this condition, the decolorization rate reached 92.21%. The composites and sugar juice system were characterized by scanning electron microscopy (SEM) and potential analyzer. The results showed that the decolonization mechanism was electric neutralization and adsorption. |
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| Keywords: | magnesium sulfate zinc poly-silicate decolonization flocculation mechanism |
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