陕西师范大学学报（自然科学版）Issue(3)：98-103,6.DOI:10.15983/j.cnki.jsnu.2015.03.136
3种葱属蔬菜水提物、醇提物与多糖的抗氧化活性研究
Antioxidant activities of water extract,ethanol extract and polysaccharides among three Allium species
摘要
Abstract
After water extract,ethanol extract and polysaccharides,three Allium species,inclu-ding A.fistulosum and A.ascalonicum,contents of polysaccharides in these three Allium spe-cies were determined by phenol-sulfuric acid method,and their antioxidant activities were evalua-ted by ABTS (2,2′-azino-bis (3-ethyl-benzothiazoline-6-sulfonic acid)diammonium salt)and DP-PH (1,1-diphenyl-2-picrylhydrazyl)assays.Average contents of polysaccharides in A.tuberos-um,A.fistulosum and A.ascalonicum were 11.40%,22.57% and 15.97%,respectively.Both ABTS· + and DPPH radical-scavenging capacities were dose dependent,and mathematical model based on dose-effect relationship had high goodness of fit.Antioxidant activities of water extract, ethanol extract were significantly better than those of polysaccharides.The three species exhibi-ted different antioxidant capacities.Among them,antioxidant activities of A.tuberosum were higher.EC50 values of ABTS ·+ radical-scavenging capacity of water extract,ethanol extract and polysaccharides from A.tuberosum were 27.46,15.58,2.05×10 3 ,respectively,and EC50 values of DPPH radical-scavenging capacity were 66.41,25.48,3.16×10 7 ,respectively.In particular, ABTS+ radical-scavenging capacity of ethanol extract was relatively close to that of vitamin C(Vc).To sum up,antioxidant activities of ethanol extract and water extract from A.tuberosum were relatively high,which showed great potential for exploitation and utilization.关键词
抗氧化活性/葱属蔬菜/水提物/醇提物/多糖Key words
antioxidant activity/Allium/water extract/ethanol extract/polysaccharides分类
轻工纺织引用本文复制引用
李璐,姚美,张华峰,陈文杰,黎梅雨..3种葱属蔬菜水提物、醇提物与多糖的抗氧化活性研究[J].陕西师范大学学报（自然科学版）,2015,(3):98-103,6.基金项目
陕西省科技合作计划项目（2014SJ-01）；陕西师范大学勤助科研创新基金项目 （）
