辛烯基琥珀酸酯化淀粉微凝胶的制备及特性研究：通过油包水（W/O）反相微乳液法用于装载和释放表没食子儿茶素没食子酸酯。
Preparation and characterization of octenyl succinylated starch microgels via a water-in-oil (W/O) inverse microemulsion process for loading and releasing epigallocatechin gallate.
机构信息
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China; Department of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China.
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
出版信息
Food Chem. 2021 Sep 1;355:129661. doi: 10.1016/j.foodchem.2021.129661. Epub 2021 Mar 23.
Corn starch (CS), octenyl succinic anhydride modified corn starch (OSCS) and shells (OSC) microgels have been prepared using water-in-oil (W/O) inverse microemulsions for loading and releasing of epigallocatechin gallate (EGCG). The structural and morphological properties of CS, OSCS, and OSC microgels were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Transmission electron microscopy (TEM), and Thermogravimetric analysis (TGA). The strong hydrogen bonds between starch molecules in the W/O system and interplay between hydroxyl groups of EGCG and oxygen atoms of starch microgels were formed. OSC microgel showed low average particle size and weak thermal stability with an irregular shape and a typical V-type crystalline structure. Encapsulation efficiency (EE) and clearance rate of 2,2-diphenyl-1-picrylhydrazyl (DPPH) for EGCG were ranged between 41.78 and 63.89% and 75.53-85.37%, respectively, when absorbed into OSCS and OSC microgels, the values which were higher than that of CS microgel. Further, OS starch microgels (particularly OSC) modulated the slow release of EGCG into simulated gastrointestinal tract conditions and therefore could be proposed as an encapsulating agent for loading polyphenols.
采用油包水（W/O）反相微乳液法制备了玉米淀粉（CS）、辛烯基琥珀酸酐改性玉米淀粉（OSCS）和壳聚糖（OSC）微凝胶，用于负载和释放表没食子儿茶素没食子酸酯（EGCG）。通过傅里叶变换红外（FTIR）光谱、X 射线衍射（XRD）、透射电子显微镜（TEM）和热重分析（TGA）对 CS、OSCS 和 OSC 微凝胶的结构和形态特性进行了表征。在 W/O 体系中，淀粉分子之间形成了强氢键，同时 EGCG 的羟基和淀粉微凝胶的氧原子之间也存在相互作用。OSC 微凝胶具有较低的平均粒径和较弱的热稳定性，呈现不规则形状和典型的 V 型结晶结构。当 EGCG 被吸收到 OSCS 和 OSC 微凝胶中时，其包封效率（EE）和 2,2-二苯基-1-苦基肼（DPPH）清除率分别在 41.78%至 63.89%和 75.53%至 85.37%之间，这些值高于 CS 微凝胶。此外，OS 淀粉微凝胶（特别是 OSC）能够调节 EGCG 在模拟胃肠道条件下的缓慢释放，因此可以作为负载多酚的包封剂。
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