en
Scientific article
Open access
English

Contamination Levels of Toxic Metals in Marketed Vegetable (Amaranthus Viridis) at Kinshasa, Democratic Republic of the Congo

Published inFood Science and Nutrition, vol. 7, no. 087
Publication date2021
Abstract

The contamination of food chain by toxic metals constitutes a major concern worldwide because of human health potential risks. Amaranthus viridis (A. viridis) is one of the most consumed vegetables in South Asian and Sub-Saharan African countries. However, the accumulation of pollutants, such as toxic metals in this plant is still little investigated. Consequently, this research investigates the level of toxic metals in A. viridis collected from four major markets of Kinshasa, Capital City of the Democratic Republic of the Congo, according to the seasonal variation in order to determine potential health risk for the consumers. The results revealed high metal concentrations in edible leaf vegetables during both dry and wet seasons. Metal concentration reaching the values (in mg kg-1) of 3.6 (Cr), 1.5 (Co), 29.7 (Cu), 348.2 (Zn), 1.7 (As), 1.5 (Cd), 18.3 (Pb) and 0.2 (Hg). Except for Cu, the analyzed metal concentrations in leafy vegetables exceeded the permissible levels set by Food and Agriculture Organization/World Health Organization (FAO/WHO) for human consumption. Given the level of toxic metals in A. viridis leaf according to the regulation of FAO/WHO, human health consequences are likely to occur on continuous vegetable consumption. Our results recommend implementation of measures and efforts to improve the quality of this most consumed vegetable in order to minimize potential health risk for the consumers.

Keywords
  • Amaranthus viridis
  • Food analysis
  • Food consumption
  • Food quality
  • Human health risk assessment
  • Toxic metals
  • Vegetable contamination
Funding
  • Autre - Departement F.-A. Forel
Citation (ISO format)
NGWEME, Georgette N et al. Contamination Levels of Toxic Metals in Marketed Vegetable (Amaranthus Viridis) at Kinshasa, Democratic Republic of the Congo. In: Food Science and Nutrition, 2021, vol. 7, n° 087. doi: 10.24966/FSN-1076/100087
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal2470-1076
252views
115downloads

Technical informations

Creation05/04/2021 10:53:00 AM
First validation05/04/2021 10:53:00 AM
Update time03/16/2023 12:31:01 AM
Status update03/16/2023 12:31:01 AM
Last indexation01/17/2024 1:09:18 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack