文献类型：会议论文

英文题名：Subcritical water extraction of phenolic antioxidants with improved alpha-amylase and alpha-glucosidase inhibitory activities from exocarps of Castanea mollissima Blume

作者：Liu, Xuanchi[1] Wang, Yanhui[1] Zhang, Jiachan[2] Yang, Linlin[3] Liu, Shiqi[1] Taha, Ahmed Aboueloyoun[1] Wang, Jing[4] Ma, Chao[1]

第一作者：Liu, Xuanchi

通信作者：Ma, C[1]

机构：[1]Beijing Forestry Univ, Coll Biol Sci & Biotechnol, Beijing Key Lab Forest Food Proc & Safety, Beijing 100083, Peoples R China;[2]Beijing Technol & Business Univ, Beijing Key Lab Plant Resource Res & Dev, Beijing 100048, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[4]Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Beijing 100081, Peoples R China

会议论文集：12th International Symposium on Supercritcal Fluids (ISSF)

会议日期：APR, 2018

会议地点：Antibes, FRANCE

语种：英文

外文关键词：Castanea mollissima; Subcritical water extraction; Phenolic components; Antioxidant activity; alpha-Amylase; alpha-Glucosidase

年份：2020

摘要：Herein, subcritical water extraction (SWE) technology was applied for the recovery of phenolics from chestnut exocarps. Results showed that extracts obtained by SWE had significantly higher extraction yield (Ye), total phenolic contents (TPC), as well as stronger antioxidant (AAs), alpha-amylase and alpha-glucosidase inhibitory activities than conventional techniques. The optimal temperature of SWE for reaching the highest Ye, TPC and AAs was 220 degrees C, while the strongest alpha-amylase and alpha-glucosidase inhibitory activities were observed at 120 degrees C. UPLC-MS/MS, heatmap and radar chart analysis revealed that the phenolic profiles of different extracts varied markedly with extraction methods, and SWE extract at 120 degrees C had potential application for glycemic control by non-competitively inhibiting alpha-amylase and/or alpha-glucosidase. The major components contributed to the inhibitory activities were putative chlorogenic acid and flavonoids, such as rutin and quercetin, etc. These observations suggest that SWE is a promising technology for obtaining bioactive phenolics from chestnut exocarps. (C) 2020 Elsevier B.V. All rights reserved.