Shanghai Engineering Research Center of Food Microbiology, School of Medical Instruments and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
Carbohydr Polym. 2021 Jun 15;262:117661. doi: 10.1016/j.carbpol.2021.117661. Epub 2021 Jan 16.
In this work, structural characteristics of TSPs treated by high-pressure homogenization (HPH) and their effects on physicochemical properties of corn starch were analyzed. HPH induced monosaccharides change, Gal/Glc ratio decrease from 0.32 to 0.25, and molecular weight (M) decrease from 10.55 to 4.47 × 10 Da through damaging glycosidic linkages in the backbone and side-chain of TSPs. Furthermore, 90 MPa homogenized TSP (higher Gal removal) showed inhibitory effects on starch paste retrogradation, and TSPs with a lower M (homogenized at 60 and 90 MPa) could limit water precipitation during the long-term storage. Moreover, M and Gal/Glc ratio were the major factors for the determined effects of TSPs on physicochemical properties of corn starch. The results could provide new insights into the relationship between TSP structure and their effects on the physicochemical properties of starch.
在这项工作中，分析了经过高压均质处理（HPH）的 TSP 的结构特征及其对玉米淀粉理化性质的影响。HPH 通过破坏 TSP 主链和侧链中的糖苷键，导致单糖发生变化，Gal/Glc 比例从 0.32 降低至 0.25，分子量（M）从 10.55 降低至 4.47×10 Da。此外，90 MPa 均质化的 TSP（Gal 去除率更高）对淀粉糊的回生具有抑制作用，而 M 较低的 TSP（在 60 和 90 MPa 下均质化）可以在长期储存过程中限制水分沉淀。此外，M 和 Gal/Glc 比例是 TSP 对玉米淀粉理化性质影响的主要因素。该结果可为 TSP 结构与其对淀粉理化性质影响之间的关系提供新的见解。
