摘要:
分别选择玉米淀粉(CS)、马铃薯淀粉(PS)和高直链玉米淀粉(HAMS)为主体,大蒜在高速剪切混合处理过程中形成的大蒜素为客体,探讨了淀粉-大蒜素的包合物(CS-A、PS-A和HAMS-A)的形成条件及其理化性质和抑菌活性。结果表明,CS、PS和HAMS分别在淀粉与大蒜(干基)质量比为1:2、1:6、1:2,高速剪切混合处理40、60、40 min时,所制备的包含物中大蒜素的含量较高。碘结合实验表明,3种淀粉与大蒜素发生包合作用的强弱次序为HAMS-A>PS-A>CS-A。经高速剪切混合处理后所形成的包合物,淀粉颗粒体积溶胀,结晶度降低,没有呈现V型结晶结构。3种包合物热稳定性大小次序为HAMS-A>PS-A>CS-A。通过对3种包合物的抗菌活性评价表明,3种包合物抑菌活性大小次序为HAMS-A>PS-A>CS-A。该研究可为大蒜素的高效利用及淀粉基大蒜素微胶囊的开发提供技术支撑。
Abstract:
In this work,corn starch(CS),potato starch(PS)and high amylose maize starch(HAMS)were selected(respectively)as hosts,and allicin formed in the process of high-speed blending of garlic was as guest,the complexation between starch and allicin were investigated based on high-speed blending method. The physicochemical properties and antibacterial activity of these inclusions(CS-A,PS-A,and HAMS-A)were investigated. When the mass ratio of starch to garlic(dry base)was 1:2(CS),1:6(PS)and 1:2(HAMS),and the corresponding treating time was 40,60 and 40 min,the contents of allicin in produced inclusions were higher. The results of iodine binding experiment showed that the order of forming complexation of these starches was:HAMS>PS>CS. All formed complexes showed that the starch granules swelled,their degree of crystallinity was decreased,and no V-type crystalline structure was observed. The order of thermal stability of these starch-allicin complexes was:HAMS-A > PS-A > CS-A. The order of antimicrobial activity of these complexes was:HAMS-A > PS-A > CS-A. Therefore,this study could provide technical support for the efficient utilization of allicin and the development of starch based allicin microcapsules.