食品工业科技2018，Vol.39Issue(2)：17-21,5.DOI:10.13386/j.issn1002-0306.2018.02.004
番茄果胶和半纤维素抗氧化活性分析
Analysis of antioxidant activity of pectin and hemicellulose extracted from tomato fruit
摘要
Abstract
Water-soluble pectin (WSP),chelate-soluble pectin (CSP),sodium carbonate-soluble pectin (SSP),loosebonding hemicellulose(LH)and tight-bonding hemicellulose(TH)were extracted from tomato fruit cell wall with water,EDTA,Na2CO3,4％ and 24％ KOH.The antioxidant activity of different pectins and hemicellulose were studied,including oxygen radical absorbance capacity (ORAC),DPPH radical (DPPH ·) scavenging capacity,ABTS radical (ABTS + ·) scavenging capacity and ferric reducing antioxidant power(FRAP).It was suggested that the content of WSP(1.05 mg GalUA/g FW)was significantly higher than CSP and SSP in tomato fruit,and the content of TH (0.09 mg Glu/g FW)was significantly higher than LH(p ＜ 0.05).And different pectins and hemicellulose from tomato fruit all showed antioxidant activity in different degree,CSP' s total antioxidant activity was higher than other cell wall components with higher ORAC,DPPH· scavenging capacity and ABTS + · scavenging capacity,when the concentration was 5 mg/mL,its ORAC value was 76.4 μmol/L Trolox equivalent,and the DPPH· scavenging rate and ABTS + · scavenging rate was 61.0％ and 99.8％,respectively.But SSP,LH and TH possessed higher FRAP.Correlation analysis suggested each cell wall component was closely related with antioxidant activity.This result made a reference to comprehensive utilization of tomato fruit and the application of functional additive in food.关键词
番茄/细胞壁组分/果胶/半纤维素/抗氧化活性Key words
tomato/cell wall components/pectin/hemicellulose/antioxidant activity分类
轻工纺织引用本文复制引用
李倩倩,李武笋,桑伟娜,王丽敏,赵玉梅,曹建康..番茄果胶和半纤维素抗氧化活性分析[J].食品工业科技,2018,39(2):17-21,5.基金项目
国家重点基础研究发展计划(973计划)项目(2013CB127104) （973计划）
国家自然科学基金面上项目(31371846). （31371846）
