文献类型：期刊文献

英文题名：Pulsed ultrasound-assisted deep eutectic solvent-mediated stabilization and bioactivity enhancement of hydrolysable tannins from chestnut (Castanea mollissima) burrs

作者：Xue, Xingying[1,2,3] Qi, Zhiwen[1] Zhou, Hao[1] Tao, Ran[1] Li, Wenjun[1] He, Qin[4] Lei, Jiandu[2] Wang, Chengzhang[1]

第一作者：Xue, Xingying;薛兴颖

通信作者：Qi, ZW[1];Wang, CZ[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Key Lab Dev & Utilizat Forest Food Resources, Nanjing 210042, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Nanjing Forestry Univ, Int Innovat Ctr Forest Chem & Mat, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[4]Nanjing Agr Univ, Coll Life Sci, Key Lab Microbiol Engn Agr Environm, Minist Agr, Nanjing 210095, Peoples R China

年份：2026

卷号：229

外文期刊名：FOOD RESEARCH INTERNATIONAL

收录：;EI(收录号：20260419969693);Scopus(收录号：2-s2.0-105028259666);WOS:【SCI-EXPANDED(收录号:WOS:001677312700002)】；

基金：The study was supported by the National Key Research and Devel-opment Program of China (Grant No. 2022YFD2200604-3) , and the National Key Research and Development Program of China (Grant No. 2022YFD2200605) .

语种：英文

外文关键词：Castanea mollissima burrs; Hydrolysable tannins; Low-water-activity DES; Molecular interaction; Bioactivity enhancement

摘要：A pulsed ultrasound-assisted deep eutectic solvent (DES) strategy enabled high-efficiency tannin extraction from chestnut burr waste, yielding 104.40 +/- 4.31 mg TAE/g DW-2.1-fold higher than conventional aqueous extraction. Comprehensive mechanistic investigations revealed synergistic effects: DES components enhanced hydrogen bonding and electrostatic attraction with tannins, while a favorable solvation energy barrier (Delta G = -85.15 kcal/mol) facilitated extraction. Advanced spectroscopic analysis (FT-IR, HPLC-IT-TOF-MS2) demonstrated DES-induced structural stabilization of hydrolysable tannins, with key components exhibiting a 3.1-fold increase in relative abundance. Specifically, DES was found to suppress water activity while forming protective tannin-DES complexes, as evidenced by characteristic upfield 1H NMR shifts (Delta delta = -0.19 ppm) and distinct vibrational frequency changes. The sustainability of this method was validated through five successful recycling trials and comprehensive green metric assessments. DES-extracted tannins demonstrated >1.2-fold enhanced antioxidant capacity and superior antibacterial activity compared to aqueous extracts. This work establishes an innovative method for agroforestry waste valorization and advances green extraction technologies.