Gao Liwei, Zhao Xinjie, Zhao Xiangzhong
School of Food Sciences and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
Int J Anal Chem. 2022 Aug 4;2022:7811014. doi: 10.1155/2022/7811014. eCollection 2022.
paramylon (EGP) is a polymeric polysaccharide composed of linear -1,3 glucan. The water insolubility of EGP severely limits its application. This work aimed to improve the functional characteristics of EGP by hydrogen peroxide (HO) degradation and carboxymethylated modification. The results showed that the crystallinity of EGP degraded by HO and carboxymethylated modification decreased by 14% and 46%, and the thermal degradation temperature was significantly descending in a crystallinity-dependent manner. In addition, the results showed that HO degradation and carboxymethylation significantly improved the adsorption capacity of EGP for oil, dyes, and metal ions, and their water solubility increased by 9% and 85%. This result will provide a valuable theoretical basis for the development and utilization of EGP.
副淀粉（EGP）是一种由线性β-1,3-葡聚糖组成的聚合多糖。EGP的水不溶性严重限制了其应用。这项工作旨在通过过氧化氢（H₂O₂）降解和羧甲基化修饰来改善EGP的功能特性。结果表明，经H₂O₂降解和羧甲基化修饰的EGP的结晶度分别降低了14%和46%，热降解温度以结晶度依赖的方式显著下降。此外，结果表明，H₂O₂降解和羧甲基化显著提高了EGP对油、染料和金属离子的吸附能力，其水溶性分别增加了9%和85%。这一结果将为EGP的开发利用提供有价值的理论依据。
