Abstract
BackgroundPolyphenol intake assessment is a first step for evaluating relationships between polyphenols and health-related outcomes. Ningxia Hui Autonomous Region is one of the minority areas in China, which is primarily consists of arid, dry desert.ObjectivesThis study was to make assessment about phenolics intake by university students from Ningxia of China.MethodsThis study employed data from a cross-sectional survey conducted from February to June 2018 in Ningxia Hui Autonomous Region of Northwest China. A total of 413 undergraduate students (143 boys, 270 girls), mean age 20.6 years, participated in the study. Food-frequency consumption and anthropometric measurements were included in the survey. According to phenol-explorer website, the amount of different classes of phenolic compounds were established. Statistics analyses were conducted with IBM SPSS 20.0.ResultsProfile of the student subjects showed low weight (19.1%), overweight (6.8%) and obesity (0.5%). The mean value about phenolics intake was 1378 mg/day. The main polyphenols consumed were flavonoids (58.7% of total polyphenols), followed by phenolic acids (38.1%). Vegetables, fruits and cereals products were the most consumed foods, while infusions and sugar products were lower. Fruit was the main food sources of total polyphenols, especially apple (22.95%), orange juice (19.03%) and apple juice (3.93%).ConclusionsThis is the first study on the polyphenol intake of university students in Ningxia of China. The present results will be benefit for further investigation on the role of polyphenol intake against disease occurrence for this adults group.
Highlights
Polyphenol intake assessment is a first step for evaluating relationships between polyphenols and health-related outcomes
This is the first study on the polyphenol intake of university students in Ningxia of China
Flavonoids are divided into six subfamilies including flavanols, flavanones, flavones, flavonols, isoflavones, and anthocyanidins according to the degree of oxidation of the oxygenated heterocycle which forms part of flavonoids structure [10]
Summary
Polyphenol intake assessment is a first step for evaluating relationships between polyphenols and health-related outcomes. Traditional nutrition intervention has changed reasonably with food to provide health benefits and further prevent deficiencies occurrence. Some food components, such as phenolics as the nonnutrients in traditional nutrition science could provide health benefits. Dietary polyphenols are divided into four major classes, including phenolic acids, flavonoids, stilbenes and lignans, which are comprised of > 500 different compounds with different structures in habitual human diets. One previous study invested the work about dietary polyphenol intake of 36,037 adult subjects in Europe (including Denmark, France, Germany, Greece, Italy, Norway, Spain, Sweden, the Netherlands, and the UK), their results showed that factors such as sociodemographic, anthropometric as well as lifestyle were associated with the various intake of polyphenols [12]
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