文獻名：Preparation and characterization of octenyl succinylated starch microgels via a water-in-oil (W/O) inverse microemulsion process for loading and releasing …

作者： Wei Gao^abc，Jie Zhu^a，Pengfei Liu^ab，Bo Cui^ab，A. M. Abd El-Aty^ade

^a State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China

^b School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong 250353, China

^c Department of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China

^d Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, 12211 Giza, Egypt

^e Department of Medical Pharmacology, Medical Faculty, Ataturk University, Erzurum, Turkey

摘要：Corn starch (CS), octenyl succinic anhydride modified corn starch (OSCS) and shells (OSC_s) 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_s 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_s 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_s microgels, the values which were higher than that of CS microgel. Further, OS starch microgels (particularly OSC_s) modulated the slow release of EGCG into simulated gastrointestinal tract conditions and therefore could be proposed as an encapsulating agent for loading polyphenols.

關(guān)鍵詞：Octenyl succinylated starch；Microgels；Epigallocatechin gallate；Encapsulation efficiency；Loading；Releasing；Polyphenols