不同处理方法对马铃薯淀粉-月桂酸复合物和马铃薯淀粉基薄膜性能的影响。
Effects of different treatment methods on properties of potato starch-lauric acid complex and potato starch-based films.
机构信息
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China.
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China.
出版信息
Int J Biol Macromol. 2019 Mar 1;124:34-40. doi: 10.1016/j.ijbiomac.2018.11.207. Epub 2018 Nov 22.
The effects of different treatment methods on the physicochemical properties of potato starch (PS) and PS-based films were studied. The complexing indices of PS-lauric acid (LA) complexes followed the order: pullulanase debranching (PD) > ultrasound treatment (UT) > dimethyl sulfoxide heating (DSH) > Control. Light microscopy showed that PS-LA complexes exhibited irregularly shaped fragments. X-ray diffraction indicated that the diffraction intensity of the PD sample was stronger than that of the other samples. The melting enthalpies (△H) of the DSH, UT and PD samples were higher than that of the Control. PD sample had the lowest enzymatic-hydrolysis rate among all of the tested samples. PS-LA composite films showed higher tensile strength, lower elongation at break, and lower moisture permeability than native starch-based film, and the films prepared by PD method had the highest tensile strength and lowest water vapour permeability among all of the tested films.
研究了不同处理方法对马铃薯淀粉（PS）及其 PS 基膜理化性质的影响。PS-月桂酸（LA）配合物的络合指数顺序为：普鲁兰酶解枝（PD）＞超声处理（UT）＞二甲基亚砜加热（DSH）＞对照。偏光显微镜显示 PS-LA 配合物呈不规则形状碎片。X 射线衍射表明 PD 样品的衍射强度强于其他样品。DSH、UT 和 PD 样品的熔融焓（△H）均高于对照。PD 样品的酶水解率在所有测试样品中最低。PS-LA 复合膜的拉伸强度高于天然淀粉基膜，断裂伸长率和水蒸气透过率均低于天然淀粉基膜，其中 PD 法制备的 PS-LA 复合膜的拉伸强度最高，水蒸气透过率最低。
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