Improving antioxidant activities of water-soluble lignin-carbohydrate complex isolated from wheat stalk through prolonging ball-milling pretreatment and homogeneous extraction
作者机构：Jiangsu Co-innovation Center for Efficient Processing and Utilization of Forest ProductsNanjing Forestry UniversityNanjing 210037China International Innovation Center for Forest Chemicals and MaterialsNanjing Forestry UniversityNanjing 210037China Center for Renewable CarbonSchool of Natural ResourcesUniversity of TennesseeKnoxvilleTN 37996USA Shandong Huatai Paper Co.Ltd.Dongying 257000China School of Natural ResourcesUniversity of TennesseeKnoxvilleTN 37996USA Key Lab of Biomass Energy and MaterialInstitute of Chemical Industry of Forest ProductsChinese Academy of ForestryJiangsu ProvinceNanjing 210042China
出 版 物：《Journal of Bioresources and Bioproducts》 (生物质资源与工程（英文）)
年 卷 期：2024年第9卷第1期
页 面：113-125页
核心收录：
学科分类：07[理学] 0703[理学-化学] 0822[工学-轻工技术与工程]
基 金：support by National Natural Science Foundation of China (No.31670591) the fellowship of China Postdoctoral Science Foundation (No.2022M711229) Natural Science Foundation of Jiangsu Province (No.BK20160928) supported by the South Eastern Regional Sun Grant Centre and AgResearch at the University of Tennessee
主 题：LCC Homogeneous extraction Ball-milling Structure-antioxidation relationship Wheat straw
摘 要：Water-soluble lignin-carbohydrate complex(LCC)rich in polysaccharides exhibits benign in vitro antioxidant activities and distinguishes high biocompatibility from lignin-rich LCC and ***,the antioxidant activity of water-soluble LCCs remains to be improved and its structure-antioxidant relationship is still ***,structurally diversified water-soluble LCCs were isolated under different ball-milling pretreatment durations(4,6,8 h),extraction pathways(ho-mogeneous and heterogeneous),and isolation routines(water extracts and residues after water extraction).Their structures were characterized by wet chemistry,chromatography and *** activities were evaluated by ferric reducing antioxidant power and 1,1-diphenyl-2-picrylhydrazyl radicals scavenging rate(RDPPH).Results show that altering ball-milling duration and isolation procedures cause varied structures and antioxidant activities of the water-soluble ***,prolonging ball-milling duration to 8 hours and homogeneous extrac-tion can enhance their antioxidant activity through releasing more phenolic structures and pro-moting the extraction of high-molecular-weight LCCs via reducing mass-transfer resistance,*** a result,the RDPPH of water-soluble LCCs reaches up to 97.35%,which is associated with the arabinan content with statistical significance(P0.05).This study provides new insights into the structure-antioxidation relationship of herbaceous LCC as potential antioxidants.
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