淀粉纳米晶的制备及特性研究——球磨结合酸水解法。
Preparation and characterization of starch nanocrystals combining ball milling with acid hydrolysis.
机构信息
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
出版信息
Carbohydr Polym. 2018 Jan 15;180:122-127. doi: 10.1016/j.carbpol.2017.10.015. Epub 2017 Oct 5.
Waxy maize starch was mechanically treated with a planetary ball mill. X-ray diffraction analysis was employed to determine the optimal ball milling time. After ball milling, the pretreated starch was hydrolyzed with HSO. The hydrolysates were obtained and their relative crystallinity, morphology, and particle size were estimated by X-ray diffraction analysis, atomic force microscopy, and nanoparticle size analyzer, respectively. The results revealed that it is possible to obtain starch nanocrystals (SNCs) after a combination of ball milling and 3days of HSO hydrolysis with a yield of 19.3wt% with a shape similar to those acquired by the conventional procedure after 5days of sulfuric acid hydrolysis, with a yield of 15.8wt%. Round-edge SNCs with an average diameter of approximately 31nm were observed. The results revealed that by controlling some parameters, certain mechanical processing methods considered unsuitable could also be applied to the preparation of SNCs.
蜡质玉米淀粉经行星球磨机进行机械处理。采用 X 射线衍射分析确定最佳球磨时间。球磨后，用 HSO 对预处理淀粉进行水解。得到水解产物，通过 X 射线衍射分析、原子力显微镜和纳米粒度分析仪分别估算其相对结晶度、形态和粒径。结果表明，经过球磨和 3 天的 HSO 水解组合处理后，可以获得淀粉纳米晶（SNC），产率为 19.3wt%，形状类似于经过 5 天硫酸水解后常规方法获得的产物，产率为 15.8wt%。观察到具有平均直径约 31nm 的圆形边缘 SNC。结果表明，通过控制某些参数，某些被认为不合适的机械处理方法也可以应用于 SNC 的制备。
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