Poster Topical Area: Dietary Bioactive Components
Location: Hall D
Poster Board Number: 266
Objective: The aim of the present study was to estimate the dietary intake of total polyphenols and polyphenol classes, and to identify the main food sources of polyphenols in Mexican adults.
Methods: Dietary data from the Mexican National Survey of Health and Nutrition 2012 (ENSANUT 2012) was analyzed. Food frequency questionnaires were collected from 3357 adults (18-90 years), at the national level. Additionally, a polyphenol food composition database was created using Phenol-Explorer and USDA databases, and extended using polyphenol retention factors and food recipes. Data is presented as median (25th and 75th percentile), polyphenol intake between genders was compared using Mann-Whitney U test, P-value <0.05 was considered statistically significant.
Results: Median intakes were: total polyphenols, 232 (95, 566) mg/day; flavonoids, 110 (46, 217) mg/day; phenolic acids, 49 (20, 175) mg/day; lignans, 1.76 (0.05, 5.60) mg/day and stilbenes 0.01 (0.00, 0.12) mg/day. Total polyphenol intake was significantly higher in the male population (n=1366), 258 (113, 583) mg/day than in the female population (n=1991); 211 (88, 543) mg/day, (P<0.005). The main food sources of total polyphenols were: coffee (49%), fruit & vegetables (30%) and fruit juices (6%); for flavonoids: fruit & vegetables (66%), fruit juices (13%), alcoholic beverages (8%) and for phenolic acids: coffee (82%), pastries & bread (5%) and fruits & vegetables (5%). The food items; orange and tangerine, apple and pear, strawberries, and grapefruit accounted for the major food sources within the fruit group. Food items; green leafy vegetables, onion, carrots, and nopal (cactus) accounted for the major food sources within the vegetables group.
Conclusion: Results showed a low dietary intake of total polyphenols and polyphenol classes. Main food sources were similar to previous reports from Europe, USA and Brazil where coffee, fruits and fruits juices are the major contributors of dietary polyphenols. Further studies are needed to assess if the polyphenol dietary intake is related to sociodemographic and lifestyle factors, in this population group.
Monica Castro Acosta
Universidad Autonoma de Sinaloa
Culiacan, Sinaloa, Mexico