# Estimation of Antioxidant Consumption in an Adolescent Population from a School in Pachuca de Soto, Mexico: A Cross-Sectional Study by Convenience Sample

## TL;DR

This study estimates antioxidant intake in Mexican adolescents and finds that cereals and fruits are the main sources of antioxidants in their diet.

## Contribution

The study provides new data on antioxidant consumption in Mexican adolescents using a convenience sample.

## Key findings

- The estimated daily intake of total phenolic compounds was 1484.01 mg GAE/person.
- Cereals and fruits were the primary contributors to antioxidant intake.
- A significant positive correlation was found between total phenolic compounds and antioxidant capacity.

## Abstract

Background: Adolescence is a critical stage for establishing lifelong dietary habits and preventing non-communicable diseases through adequate intake of bioactive compounds. Numerous studies have thoroughly examined the antioxidant profile of traditional diets such as the Mediterranean diet. In contrast, current research provides limited insights into the antioxidant properties of foods typically consumed by Mexican adolescents. Objective: So, this study aimed to quantify the total phenolic compound (TPC) content and antioxidant capacity (AC) of frequently consumed foods and to estimate dietary intake in Mexican adolescents. Methodology: The selected food groups were identified based on their frequency of consumption by 15% or more of the adolescent population, considering those that have demonstrated a sufficient quantity of antioxidants. It was analyzed TPC and ABTS•+ and DPPH• to determine the antiradical activity of the analyzed samples. Results: The estimated daily intake of TPC was 1484.01 mg GAE/person, while AC intake was 345.67 mg AAE/person (ABTS•+) and 5399.14 µmol TE/person (DPPH•). Cereals and fruits were the major contributors to total antioxidant intake, while the contribution of leafy vegetables and nuts was relatively low. The statistical analysis revealed a significant positive correlation between TPC and AC. The results of the study indicate the antioxidant potential of the adolescent diet. Conclusions: Despite certain limitations, the values obtained from the study are comparable to those of other studies that employed similar methodologies. Consequently, promoting the early consumption of fresh plant-based foods rich in antioxidants, such as polyphenols, which can enhance the dietary profile and contribute to adolescents’ long-term health, constitutes a significant area of research.