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投稿时间:2023-04-28
投稿时间:2023-04-28
中文摘要: 以蓝靛果花青素为原材料,评价蓝靛果花青素的体外抗氧化作用,从Nrf2-Keap1-ARE 通路关键因子的调控角度探讨蓝靛果花青素的抗氧化机制。结果表明,蓝靛果花青素对DPPH 自由基、ABTS+自由基和羟自由基的清除率分别为92.48%、99.82%、95.67%,总抗氧化能力为186.62 U/mg,蓝靛果花青素可提高H2O2 诱导Caco-2 细胞损伤的超氧化物歧化酶(superoxide dismutase,SOD)、过氧化氢酶(catalase,CAT)和谷胱甘肽过氧化物酶(glu-tathione peroxidase,GSH-Px)活性,降低丙二醛(malonyldialdehyde,MDA)水平,上调Nrf2-Keap1-ARE 通路中的核因子E2 相关因子2(nuclear factor erythroid 2-related factor 2,Nrf2)mRNA 表达量,上调血红素加氧酶l(heme oxygenase,HO-1)和醌羟基氧化还原酶l(quinone oxidoreductase 1,NQO1)mRNA 表达量,下调Kelch 样ECH 关联蛋白1(recombinant kelch Like ECH associated protein 1,Keap1)mRNA 表达量,激活细胞抗氧化酶的活性,发挥氧化损伤的保护作用,抗氧化作用与维生素C(vitamin,VC)和特丁基对苯二酚(tert-butylhydroquinone,t-BHQ)相当。
中文关键词: 蓝靛果 花青素 抗氧化活性 氧化应激 Nrf2-Keap1-ARE 信号通路
Abstract:Using Lonicera caerulea anthocyanins as raw materials,this study was evaluated the in vitro antioxidant activity and mechanism of anthocyanins from the perspective of key regulatory factors in the Nrf2-Keap1-ARE pathway. The results showed that the scavenging rates of L. caerulea anthocyanins for DPPH radicals,ABTS+ radicals,and hydroxyl radicals were 92.48%,99.82%,and 95.67%,respectively. The total antioxidant capacity was 186.62 U/mg. L. caerulea anthocyanins could increase the levels of superoxide dismutase(SOD),catalase(CAT),and glutathione peroxidase(GSH-Px)in H2O2-induced Caco-2 cell damage,reduce the level of malondialdehyde(MDA),upregulate the mRNA expression of nuclear factor erythroid 2-related factor 2(Nrf2)in the Nrf2-Keap1-ARE pathway,as well as the mRNA expression of heme oxygenase 1(HO-1)and quinone oxidoreductase 1(NQO1),and downregulate the mRNA expression of Kelch-like ECH-associated protein 1(Keap1).L.caerulea anthocyanins activated cellular antioxidant enzymes and exerted protective effects against oxidative damage,with antioxidant effects comparable to those of vitamin C(VC)and tert-butylhydroquinone(t-BHQ).
keywords: Lonicera caerulea anthocyanin antioxidant activity oxidative stress Nrf2-Keap1-ARE signaling pathway
文章编号:202419008 中图分类号: 文献标志码:
基金项目:吉林省科技发展计划项目(20200702052NC)
作者 | 单位 |
曹柏营1,杨海蛟2,侯宇3,王家利3,乔新宇1,陈英伟1,刘馨阳1 | 1.吉林工程技术师范学院生物与食品工程学院,吉林 长春 130052;2.敦煌市市场监督管理局,甘肃 敦煌 736200;3.吉林省产品质量监督检验院,吉林 长春 130103 |
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