文献类型：期刊文献

英文题名：Effects of Steam Explosion-Assisted Extraction on the Structural Characteristics, Phenolic Profile, and Biological Activity of Valonea

作者：Tong, Zhenkai[1,2,3,4,5] Li, Wenjun[1,3,4,5] Jiang, Jianxin[2] Wang, Chengzhang[1,3,4,5]

第一作者：Tong, Zhenkai

通信作者：Wang, CZ[1];Wang, CZ[2];Wang, CZ[3];Wang, CZ[4]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, State Key Lab Efficient Utilizat Forest Food, Nanjing 210042, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Key Lab Biomass Energy & Mat, Nanjing 210042, Peoples R China;[4]Natl Forestry & Grassland Adm, Key Lab Chem Engn Forest Prod, Nanjing 210042, Peoples R China;[5]Jiangsu Coinnovat Ctr Efficient Proc & Utilizat, Int Innovat Ctr Forest Chem & Mat, Nanjing 210042, Peoples R China

年份：2025

卷号：14

期号：23

外文期刊名：FOODS

收录：;Scopus(收录号：2-s2.0-105024583952);WOS:【SCI-EXPANDED(收录号:WOS:001635110900001)】；

基金：This study was supported by Jiangsu Province Agricultural Science and Technology Independent Innovation Fund (Grant No. CX(23)1030).

语种：英文

外文关键词：steam explosion; total polyphenols; valonea; antioxidant activity; anti-inflammatory activity

摘要：Valonea, a natural product from Quercus variabilis, is rich in bioactive phenolic compounds; however, its compact physical structure restricts the efficient extraction of these components, limiting its high-value applications. To address this issue, the present study examined the influence of steam explosion (SE) pretreatment on the physical structure, phenolic profile, and bioactivity of valonea and identified optimal processing parameters. Under optimal conditions (1.0 MPa and 10 min), the content of total polyphenols increased by 63.1%, reaching 553.0 mg/g extract, while gallic acid and ellagic acid concentrations increased by 380.6% and 1280.0%, respectively. Electrospray ionization mass spectrometry identified 12 major phenolic constituents, providing a compositional basis for the observed bioactivities. The extract exhibited strong antioxidant and anti-inflammatory properties, confirming that SE not only augments phenolic content but also preserves or enhances the functional quality of the extract. As an efficient and environmentally friendly pretreatment technology, SE substantially improves the bioavailability and activity of phenolics in valonea. Thus, this study offers a reliable strategy for the high-value utilization of valonea in fields such as pharmaceuticals, functional foods, and animal feed.