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中国精品科技期刊2020
刘长霞, 马长水, 邢宇斌. 壳聚糖硬脂酸盐制备新方法及其结构性能研究[J]. 食品工业科技, 2017, (08): 276-279. DOI: 10.13386/j.issn1002-0306.2017.08.045
引用本文: 刘长霞, 马长水, 邢宇斌. 壳聚糖硬脂酸盐制备新方法及其结构性能研究[J]. 食品工业科技, 2017, (08): 276-279. DOI: 10.13386/j.issn1002-0306.2017.08.045
LIU Chang-xia, MA Chang-shui, XING Yu-bin. The new preparation method of chitosan stearate and its structure properties[J]. Science and Technology of Food Industry, 2017, (08): 276-279. DOI: 10.13386/j.issn1002-0306.2017.08.045
Citation: LIU Chang-xia, MA Chang-shui, XING Yu-bin. The new preparation method of chitosan stearate and its structure properties[J]. Science and Technology of Food Industry, 2017, (08): 276-279. DOI: 10.13386/j.issn1002-0306.2017.08.045

壳聚糖硬脂酸盐制备新方法及其结构性能研究

The new preparation method of chitosan stearate and its structure properties

  • 摘要: 以固体壳聚糖醋酸盐为原料,水为反应介质,制备了壳聚糖硬脂酸盐。通过红外光谱、X-射线衍射、电子扫描显微镜等对壳聚糖硬脂酸盐的结构进行表征,并考察了其油脂吸附性能。实验结果表明:壳聚糖硬脂酸盐的制备适宜条件为:原料物质的量比1:1,反应温度7075℃,反应时间30 min;产品微观结构表面粗糙、多空隙;在弱酸和中性条件下,壳聚糖硬脂酸盐的油脂吸附量比壳聚糖提高35倍,不受介质pH影响。新壳聚糖硬脂酸盐制备方法无需调节反应介质pH,无有机溶剂,反应快,产品易抽滤、洗涤,产率达85%以上,便于规模生产。 

     

    Abstract: Chitosan stearate was prepared by using solid chitosan acetate as raw material and water as the reaction medium.The structure of chitosan stearate samples was characterized by the FT-IR, XRD and SEM and oil adsorption capacity of the production was determined. The results indicated that the optimal preparation conditions of the ionic compound of chitosan stearate were 1 : 1 of molar ratio for raw materials, 70 ~ 75 ℃ of temperature and 30 minutes reaction time. The production showed rough surface and porous microstructure.The oil adsorption capacity of chitosan stearate was determined under different p H conditions.The results showed that the environmental p H almost didn't affect on the oil adsorption capacity of chitosan seterate.The chitosan seterate showed better oil adsorption capacity, which was about 3 ~ 5 times higher than that of the plain chitosan under weak acid and neutral conditions.Chitosan stearate prepared by this method was easily filtered and washed, and the yield reached over 85%. The method was environmental without organic solvent, convenient and immediate without p H adjustment and suitable to volume production.

     

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