College of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province 266109, China.
Zhucheng Xingmao Corn Developing Co., Ltd, Weifang, Shandong Province, 262200, China.
Int J Biol Macromol. 2020 May 1;150:644-653. doi: 10.1016/j.ijbiomac.2020.02.130. Epub 2020 Feb 13.
Debranching modifications of waxy corn starch with pullulanase can generate short-chain amylose or debranched starch (DBS), which is easy to recrystallize. Herein, we firstly investigated the regulation of recrystallization behaviors of DBS by studying the interactions between DBS and emulsifiers, polyphenols, and fatty acids. Sodium dodecyl sulfate at the 3.0% level had strong interactions with DBS. When the concentration of epigallocatechin gallate was 15%, the enthalpy change (ΔH) of DBS was close to 0 J/g and the relative crystallinity of DBS was 0, clearly indicating the strong interactions between epigallocatechin gallate and DBS. When the concentration of caproic acid, caprylic acid, and capric acid increased from 0 to 20.0%, the ΔH of DBS decreased from 11.38 ± 0.01 to 3.90 ± 0.63, 1.39 ± 0.21, and 3.98 ± 0.83 J/g, respectively. The interactions between emulsifiers, polyphenols, and fatty acids and DBS could affect physiochemical properties of DBS in varying degrees.
用普鲁兰酶对蜡质玉米淀粉进行支链修饰可以生成短链直链淀粉或支链淀粉（DBS），它很容易再结晶。在此，我们首先通过研究 DBS 与乳化剂、多酚和脂肪酸之间的相互作用，研究了 DBS 再结晶行为的调节。十二烷基硫酸钠在 3.0%的水平上与 DBS 具有很强的相互作用。当表没食子儿茶素没食子酸酯的浓度为 15%时，DBS 的焓变（ΔH）接近 0 J/g，DBS 的相对结晶度为 0，这清楚地表明表没食子儿茶素没食子酸酯与 DBS 之间存在强烈的相互作用。当己酸、辛酸和癸酸的浓度从 0 增加到 20.0%时，DBS 的ΔH 分别从 11.38 ± 0.01 降低至 3.90 ± 0.63、1.39 ± 0.21 和 3.98 ± 0.83 J/g。乳化剂、多酚和脂肪酸与 DBS 之间的相互作用会在不同程度上影响 DBS 的理化性质。
