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首页> 外文期刊>The British Journal of Nutrition >Effect of plant foods and beverages on plasma non-enzymatic antioxidant capacity in human subjects: a meta-analysis.
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Effect of plant foods and beverages on plasma non-enzymatic antioxidant capacity in human subjects: a meta-analysis.

机译：植物食品和饮料对人类受试者血浆非酶抗氧化能力的影响：一项荟萃分析。

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Non-enzymatic antioxidant capacity (NEAC) represents a sensitive biomarker measuring the in vivo antioxidant potential of vegetable foods. To evaluate the effectiveness of plant-derived foods and beverages on the plasma non-enzymatic antioxidant system, we analysed all literature published upto May 2010. Data were extracted by two authors independently, and the effect size was summarised using standardised mean differences by a random-effects model. For the analysis, eighty-eight studies were included, reporting a total number of 122 interventions and involving 2890 subjects. There was overall evidence of the effectiveness of fruit, vegetables, dietary patterns based on plant foods, red wine and tea in increasing plasma NEAC. No changes were found for chocolate and fruit juices. We observed an overall effect size three times higher in subjects with risk factors when compared with healthy subjects. Total radical-trapping antioxidant parameter, oxygen radical absorbance capacity and ferric-reducing antioxidant power methods showed a similar increase in plasma NEAC following dietary supplementation, whereas Trolox equivalent antioxidant capacity did not respond to dietary supplementation. Data from the present meta-analysis show that plant-derived foods represent an effective strategy to enhance an endogenous antioxidant network in humans. This is particularly evident in the presence of oxidative stress-related risk factors
机译：非酶抗氧化能力（NEAC）代表一种敏感的生物标记，可测量蔬菜食品的体内抗氧化能力。为了评估植物性食品和饮料对血浆非酶抗氧化剂系统的有效性，我们分析了截至2010年5月的所有文献。两位作者独立提取数据，并使用标准化均值差通过随机总结了效应量效果模型。为了进行分析，纳入了88项研究，报告了总共122项干预措施，涉及2890名受试者。总体而言，水果，蔬菜，以植物性食物为基础的饮食方式，红酒和茶对提高血浆NEAC的有效性。没有发现巧克力和果汁的变化。与健康受试者相比，我们观察到具有危险因素的受试者的总体效应大小高出三倍。补充膳食后，总自由基捕获抗氧化剂参数，氧自由基吸收能力和还原铁的抗氧化剂能力方法显示血浆NEAC的增加类似，而Trolox等效抗氧化剂能力对膳食补充没有反应。来自当前荟萃分析的数据表明，植物性食品是增强人类内源性抗氧化剂网络的有效策略。这在存在与氧化应激相关的危险因素时尤其明显

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