EFFECT OF IONIC STRENGTH ON FORMATION AND MICROSTRUCTURE OF SELF-ASSEMBLY GLOBULIN NANOFIBRILS AND GELS
文献类型: 外文期刊
作者: Zhang, Y. H. H. 1 ; Huang, L. H. 2 ; Ting, S. X. 1 ; Wang, S. Y. 1 ; Lin, Y. S. 1 ;
作者机构: 1.Sericulture & Agri Food Res Inst GAAS, Guangdong Key Lab Agr Prod Proc, Guangzhou 510610, Guangdong, Peoples R China
2.Guangzhou City Polytech, Dept Food, Guangzhou 510405, Guangdong, Peoples R China
关键词: Rice bran globulin;Nanoscale fibrils;Ionic strength;Microstructure;Electrostatic screening
期刊名称:DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES ( 影响因子:0.963; 五年影响因子:1.047 )
ISSN: 1842-3582
年卷期: 2014 年 9 卷 3 期
页码:
收录情况: SCI
摘要: Self-assembly of globulin fibrils as nanoscale material exhibited unique properties. To gain insight into the effect of various electrostatic screening on the aggregates and gels structure of rice bran globulin(RBG), a kinetic process of rice bran globulin(RBG) turbidity and gelation were performed. The absorbance of solutions and required time of gelation are all reveal significant differences at various ionic strengths. AFM images showed the assembling morphology of RBG fibrils, a string beads transformed to branched cluster, when electrostatic repulsive forces attenuated gradually with increasing ionic strength The gel strength increased with increasing ionic strength and protein concentration. A simulated phase diagram had been drawn, according to the actual state and color of solution and gel. A dense granular structure of gel network was observed, and a more intensive structure present at low ionic strength. A hypothetical pathway for possible RBG gel formation was promoted understanding of nano-structure.
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