文献类型：期刊文献

英文题名：Preparation of κ-carrageenan oligosaccharides by photocatalytic degradation: Structural characterization and antioxidant activity

作者：Li, Ziyu[1];Cheong, Kit -Leong[1];Song, Bingbing[1];Yin, Huan[1];Li, Qian[1];Chen, Jing[1];Wang, Zhuo[1];Xu, Baojun[2];Zhong, Saiyi[1,3,4]

机构：[1]Guangdong Ocean Univ, Coll Food Sci & Technol, Guangdong Prov Engn Technol Res Ctr Seafood, Guangdong Prov Engn Lab Marine Biol Prod,Guangdong, Zhanjiang 524088, Peoples R China;[2]BNU HKBU United Int Coll, Dept Life Sci, Food Sci & Technol Programme, Zhuhai 519087, Peoples R China;[3]Dalian Polytech Univ, Collaborat Innovat Ctr Seafood Deep Proc, Dalian 116034, Peoples R China;[4]Guangdong Ocean Univ, Shenzhen Res Inst, Shenzhen 518108, Peoples R China

年份：2024

卷号：22

外文期刊名：FOOD CHEMISTRY-X

收录：SCI-EXPANDED(收录号：WOS:001218593900001)、、EI(收录号：20241315811618)、Scopus(收录号：2-s2.0-85188520197)、WOS

基金：This research project is supported by the Guangdong Basic and Applied Basic Research Foundation (2023A1515010005) , Special Funds for Universities in Guangdong Province in the Key Areas of Biomedicine and Health (2023ZDZX2025) , Guangdong Ocean University College Student Innovation Team Project (CXTD2023005) , and the Innovative Team Program of High Education of Guangdong Province (2021KCXTD021) .

语种：英文

外文关键词：kappa-Carrageenan; Photodegradation; Oligosaccharide; Structural characterization; Antioxidant activities

外文摘要：To accurately, efficiently, and environmentally prepare carrageenan oligosaccharides, we have developed a method that uses H2O2 and TiO2 as catalysts for the photodegradation of kappa-carrageenan (KC). The photodegradation of KC was monitored using various amounts of TiO2 and H2O2 and different concentrations of KC via HPLC and it could decrease the average molecular weight of KC into 1.6 kDa within 2 h. Further research under optimal conditions. As a control, the effects of UV, UV/H2O2, UV/TiO2, and H2O2/TiO2 treatments were studied. In contrast, UV/H2O2/TiO2 treatments showed a coordinated effect. The effect of degradation on the structure of KC was investigated by FT-IR, XRD, and there was no obvious remotion of sulfate groups. Furthermore, oral administration of KCO prolonged the healthy lifespan of nematodes induced by ultraviolet stress and significantly regulated oxidative stress. This study suggests that the precise preparation and application of KCO may be beneficial.