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投稿时间：2017-11-13
投稿时间：2017-11-13
中文摘要: 分析无硫澄清工艺的清汁、糖浆与白砂糖理化指标，并通过T检验分析这些物料理化指标与亚硫酸法的差异显著性。同时分析无硫澄清工艺过程Ca3（PO4）2、CaCO3及单宁钙协同CaCO3等沉淀物微观结构及吸附蔗汁胶体、色素效果，探讨无硫澄清的除杂脱色原理。结果表明，无硫澄清工艺清汁和糖浆在纯度、色值、还原糖含量等指标T检验p值均大于0.05，而清汁浊度、糖浆电导灰分及浊度的p值小于0.05，表明无硫澄清工艺与亚硫酸法工艺清汁、糖浆在纯度、色值、还原糖含量等关键指标无显著差异，在清汁浊度、糖浆浊度与电导灰分存在显著性差异；所煮制白砂糖不含SO2，色值为46 IU，浊度21 MAU，水分0.07%，电导灰分0.024%，色值与浊度明显优于亚硫酸法（色值62 IU，浊度38 MAU，表明无硫澄清工艺完全可以满足一级白砂糖生产的工艺要求，且在色值与混浊度更具有优势。从扫描电子显微镜图可知，纯水体系生成的CaCO3、Ca3（PO4）2和单宁钙沉淀具有明显的晶体结构，晶体间存在许多空隙，且在蔗汁体系生成CaCO3、Ca3（PO4）2及单宁钙沉淀晶体间绝大多数空隙已全部或大部分被填充，特别单宁钙，空隙数量已显著减少，甚至观察不到，表明上述沉淀物生成时会同步吸附混合汁的胶体、色素等形成共沉淀，从而将它们除去，胶体去除率与脱色率达到46.17%和50.61%，优于亚硫酸法，这可由清汁、糖浆及白砂糖紫外全波扫描图证实。
Abstract:Abstract：Qualities of clear juice，syrup and white granulated sugar of sulfur-free clarification process were prepared and determined，the removal rates of colloid and pigment in sugarcane juice by Ca3（PO4）2，CaCO3and tannin calcium cooperated with CaCO3generated during sulfur-free clarification process were analyzed，and the microstructure of these precipitates was studies by scanning electron microscope T analysis between sulfur-free clarification process and sulfitation process showed that p values of apparent purity（AP），color value，reducing sugar content of clear juice and syrup were higher than 0.05，whereas the p values of clear juice turbidity and syrup conductivity ash and turbidity were lower than 0.05，which indicated that the difference of AP，color value，reducing sugar content of clear juice and syrup were not significant，but the difference of juice turbidity，syrup conductivity ash content and turbidity were significant.The quality of clear juice and syrup both met with the requirements to produce white granulated sugar.The white granulated sugar of sulfur-free clarification process contained no SO2，and color was 46 IU，turbidity was 38 MAU，moisture content was 0.07%，ash content was 0.024%，all quality indicators could meet with requirements of national first-grade white granulated sugar standard，color value and turbidity were obviously better than that of sulfitation process（color 62 IU，turbidity 38 MAU）.Figure SEM showed that CaCO3，Ca3（PO4）2and tannin calcium in pure water had obvious crystal structure，there were many gaps between the crystals，whereas，the voids of these precipitates were filled in with the presence mixed juice，especially tannin calcium，the void had been significantly reduced，even not observed，which indicated that the pigments and colloid matters were absorbed by the precipitates form simultaneously，and precipitate together，resulted in removal of colloid and pigment.The removal rates of colloid pigments were 46.17%and 50.61%，better than that of sulfitation process，which was confirmed by UV fulllength wave scan.
文章编号：201821021 中图分类号： 文献标志码：
基金项目:广西科技计划项目（桂科AB16380005）；广西科技计划项目（桂科AB17195069）
| 作者 | 单位 |
| 王福佳，谢彩锋，马英群，程芳，杭方学，陆海勤 | （1.广西南宁东亚糖业集团，广西南宁530028；2.广西大学轻工与食品工程学院，广西南宁530004；3.广西蔗糖产业协同创新中心，广西南宁530004；4.中国科技开发院广西分院，广西南宁530012） |
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