...
首页> 外文期刊>Journal of Agricultural and Food Chemistry >Black rice (Oryza sativa L. indica) pigmented fraction suppresses both reactive oxygen species and nitric oxide in chemical and biological model systems
【24h】

Black rice (Oryza sativa L. indica) pigmented fraction suppresses both reactive oxygen species and nitric oxide in chemical and biological model systems

机译:黑米(Oryza sativa L. indica)色素部分在化学和生物模型系统中同时抑制了活性氧和一氧化氮

获取原文
获取原文并翻译 | 示例
           

摘要

Anthocyanins, present in fruits and vegetables as natural colorants, have been well characterized to possess bioactive properties. Anthocyanin components extracted from black rice (Oryza sativa L. indica) separated by gel filtration and identified using LC-MS were cyanidin 3-glucoside and peonidin 3-glucoside. A standardized extract of black rice pigmented fraction (BRE) containing known proportions of cyanidin 3-glucoside and peonidin 3-glucoside exhibited marked antioxidant activities and free radical scavenging capacities in a battery of in vitro model systems. Significant (p < 0.05) prevention of supercoiled DNA strand scission induced by reactive oxygen species (specifically, peroxyl radical and hydroxyl radicals) and suppression of the oxidative modification of human low-density lipoprotein was obtained with BRE. In addition, BRE reduced (p < 0.05) the formation of nitric oxide by suppressing inducible nitric oxide synthase expression in murine macrophage RAW264.7 cells, without introducing cell toxicity. The results of this study show that black rice contains anthocyanin pigments with notable antioxidant and anti-inflammatory properties for potential use in nutraceutical or functional food formulations.
机译:作为天然着色剂存在于水果和蔬菜中的花色苷已被很好地表征为具有生物活性。通过凝胶过滤分离并通过LC-MS鉴定的从黑米(Oryza sativa L.indica)中提取的花青素成分为花青素3-葡糖苷和peonidin 3-葡糖苷。在一组体外模型系统中,含有已知比例的花青素3-葡萄糖苷和peonidin 3-葡萄糖苷的黑米色素馏分(BRE)的标准化提取物表现出显着的抗氧化活性和自由基清除能力。用BRE可以显着(p <0.05)预防由活性氧(特别是过氧自由基和羟基自由基)引起的超螺旋DNA断裂,并抑制了人类低密度脂蛋白的氧化修饰。此外,BRE通过抑制鼠巨噬细胞RAW264.7细胞中可诱导的一氧化氮合酶表达而减少了(p <0.05)一氧化氮的形成,而没有引起细胞毒性。这项研究的结果表明,黑米中含有花青素色素,其花青素具有显着的抗氧化剂和抗炎特性,可潜在地用于营养保健品或功能性食品配方中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号