Departament of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Brazil.
Departament of Chemical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Eur J Nutr. 2018 Mar;57(2):617-627. doi: 10.1007/s00394-016-1348-0. Epub 2016 Nov 21.
Epidemiological studies have remarked the beneficial role that polyphenols may have in the elderly population such as cancer and cardiovascular disease prevention. This is particularly relevant considering the global tendency of population aging. Data on polyphenol intake in the elderly population are scarce and usually provide partial information-only for some polyphenol classes. The aim of this study was to estimate the intake of polyphenols and its major dietary contributors in the population of Viçosa.
A cross-sectional population-based survey including 620 elderly was conducted in Viçosa, Brazil. Food intake was estimated by recall of habitual consumption (RHC). Polyphenol intake was calculated by matching food consumption data from the RHC with the polyphenol content in foods listed in the Phenol-Explorer database.
The average total polyphenol intake was 1198.6 mg/day (533.7 mg/day as aglycone). The main polyphenol classes were phenolic acids (729.5 mg/day) and flavonoids (444.7 mg/day). The main dietary contributors for total polyphenols were coffee (45.8%), beans (32.8%) and polenta (1.3%). A total of 292 polyphenols divided in 14 classes and 23 subclasses were found. The individual compounds with the highest intake were isomers of chlorogenic acid (i.e., 5-caffeoylquinic acid, 4-caffeoylquinic acid and 3-caffeoylquinic acid) among hydroxycinnamic acids that largely originated from coffee.
The data reported here can be used to evaluate the association between the amount and type of ingested polyphenols and health outcomes in epidemiological studies in order to eventually establish nutritional recommendations.
流行病学研究表明，多酚可能对老年人具有有益作用，如预防癌症和心血管疾病。考虑到全球人口老龄化的趋势，这一点尤其重要。关于老年人多酚摄入量的数据很少，并且通常仅提供一些多酚类别的部分信息。本研究旨在估计维索萨老年人的多酚摄入量及其主要饮食来源。
在巴西维索萨进行了一项基于人群的横断面研究，共纳入 620 名老年人。通过习惯性消费回忆（RHC）估计食物摄入量。通过将 RHC 中的食物消费数据与 Phenol-Explorer 数据库中列出的食物中的多酚含量相匹配，计算多酚摄入量。
平均总多酚摄入量为 1198.6mg/天（以糖苷形式摄入 533.7mg/天）。主要的多酚类包括酚酸（729.5mg/天）和类黄酮（444.7mg/天）。总多酚的主要饮食来源是咖啡（45.8%）、豆类（32.8%）和玉米粥（1.3%）。共发现 292 种多酚，分为 14 类和 23 个亚类。羟基肉桂酸中异构体（即 5-咖啡酰奎宁酸、4-咖啡酰奎宁酸和 3-咖啡酰奎宁酸）的摄入量最高，这些异构体主要来源于咖啡。
这里报告的数据可用于评估流行病学研究中摄入的多酚数量和类型与健康结果之间的关系，最终为制定营养建议提供依据。
