ORIGINAL RESEARCH article
Front. Nutr.
Sec. Food Chemistry
Volume 12 - 2025 | doi: 10.3389/fnut.2025.1559287
This article is part of the Research TopicCombating Food Fraud: Multidisciplinary Approaches to Enhance Food Safety and AuthenticityView all articles
Adulteration and Quality Assessment of Tomato Paste: A Study of the Lebanese Market
Provisionally accepted
Fatima Habib1
Salma Khazaal1Elie Bou Yazbeck1
Espérance Debs2
Suhair Sunoqrot3
Nicolas LOUKA4
Nada El Darra1*- 1Faculty of Health Sciences, Beirut Arab University, Beirut, Lebanon
- 2Department of Biology, Faculty of Arts and Sciences, University of Balamand, El-Koura, North Governorate, Lebanon
- 3Al-Zaytoonah University of Jordan, Amman, Amman, Jordan
- 4Faculté des sciences, Université Saint-Joseph, Beirut, Lebanon
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Food adulteration has emerged as a significant global issue, impacting consumer health and fair-trade practices. This study aimed to evaluate the quality and potential adulteration with starch in tomato paste products available in the Lebanese market. A total of 41 local and imported tomato paste samples, without starch declarations, were collected from the Lebanese market and analyzed for starch usage and various quality parameters (total soluble solids, Bostwick consistency, viscosity, titratable acidity, color, and dry matter content), as well as compliance with Libnor and Codex Alimentarius standards. Results revealed that 37% of samples failed to meet starch usage standards, and 27% did not comply with the required total soluble solids (>24%), while all samples complied with acidity standards (<7%). Compliant samples had significantly higher values for total soluble solids, acidity, dry matter, and color compared to non-compliant ones (p < 0.01). A comparison of local and imported tomato paste products showed no significant differences in physicochemical properties, color, shelf life, or price, with parameters being similar across samples. Among local samples, 48% did not comply with the starch usage standard, and 26% failed to meet the required total soluble solids level. In contrast, imported samples adhered to starch usage standards, although 30% did not comply with TSS levels. This study highlights the prevalence of adulteration in local and imported tomato paste products in Lebanon and calls for further enforcement measures to ensure consumer protection and fair trade.
Keywords: tomato paste, Food adulteration, quality parameters, starch usage, Total soluble solids, Bostwick consistency, Titratable acidity, Color
Received: 12 Jan 2025; Accepted: 31 Mar 2025.
Copyright: © 2025 Habib, Khazaal, Bou Yazbeck, Debs, Sunoqrot, LOUKA and El Darra. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Nada El Darra, Faculty of Health Sciences, Beirut Arab University, Beirut, -5020, Lebanon
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