The synergistic enhancement or inhibition of different molecular weight components of mannoproteins after ultrafiltration on the encapsulation
文献类型： 外文期刊
作者： Gao, Binghong 2 ; Rao, Chuanyan 1 ; Lei, Xingmeng 2 ; Li, Siqi 2 ; Huang, Xiaochuan 1 ; Liu, Yanlin 2 ; Ye, Dongqing 1 ;
作者机构： 1.Guangxi Acad Agr Sci, Guangxi Key Lab Fruits & Vegetables Storage Proc T, Nanning 530007, Peoples R China
2.Northwest A&F Univ, Coll Enol, Xianyang 712100, Peoples R China
关键词： Ultrafiltration; Different molecular weight; Synergistic effect
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）
ISSN： 0141-8130
年卷期： 2024 年 283 卷
页码：
收录情况： SCI
摘要： This study investigated the effects of molecular weight regulation on mannoproteins (MPs) in encapsulating both monomeric and oligomeric proanthocyanidins (MOPC). To achieve this, two different conformations of MPs were fractionated by ultrafiltration into two main molecular weight components. The results indicated that regulating molecular weight through ultrafiltration altered the conformation of MPs chains, which in turn affected the intermolecular forces with MOPC. Specifically, the interactions among the different molecular weight components of MPs formed a cross-linking network. High molecular weight components provided external support to this network, while low molecular weight components contributed to internal stabilization. The dense, flexible, and irregular coil structure of MPs facilitated the entry of MOPC into the internal spaces of the cross-linking network. Additionally, protein unfolding into a more stable beta-sheet structure further stabilized MPs' crosslinking network, enhancing its capacity to encapsulate MOPC. The presence of more hydrophobic regions and positive charges within the proteins increased the number of binding sites for MOPC. This study aimed to identify the primary structural forms of MPs with potent initial bitter inhibition capabilities on MOPC, and a proposed ultrafiltration method was introduced to modify the triple helix structure of polysaccharide, offering a foundational theoretical framework for enhancing the functional attributes of current or prospective MPs. Additionally, the mixed regulation of polysaccharides with varying conformations was also beneficial for guiding the production of high-efficiency polysaccharide products.
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