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Journal of Toxicology
Volume 2014, Article ID 376503, 8 pages
Research Article

Sanitary Risks Connected to the Consumption of Infusion from Senna rotundifolia L. Contaminated with Lead and Cadmium in Cotonou (Benin)

1Interfaculty Centre of Training and Research in Environment for Sustainable Development (CIFRED), University of Abomey-Calavi (UAC), Jéricho, 03 BP 1463 Cotonou, Benin
2Department of Physiology/Pharmacology, Faculty of Science, University of Lomé (UL), BP 1515, Lomé, Togo
3Laboratory of Applied Research in Biology (LARBA), Genie Environment Department of Polytechnic University (EPAC), University of Abomey-Calavi (UAC), 01 BP 526 Cotonou, Benin
4National Programme for Malaria Control (PNLP), Ministry of Health, Akpakpa, 01 BP 882 Cotonou, Benin
5Laboratory of Toxicology and Applied Hygiene/UFR of Pharmaceutical Sciences, 146 Street Léo Saignat, 33076 Bordeaux Cedex, France
6Laboratory Pierre Pagney: Climate, Water, Ecosystem and Development (LACEEDE), Faculty of Arts and Human Sciences, University of Abomey-Calavi, 03 BP 1122 Cotonou, Benin
7Department of Biochemistry and Cellular Biology, University of Abomey-Calavi (UAC), 01 BP 526 Cotonou, Benin

Received 13 July 2013; Revised 27 October 2013; Accepted 11 November 2013; Published 29 January 2014

Academic Editor: Orish Ebere Orisakwe

Copyright © 2014 S. A. Montcho et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This study carried out an assessment of sanitary risks connected to the consumption of Senna rotundifolia Linn. contaminated with lead and cadmium. This plant was collected and analyzed by atomic absorption spectrophotometry. The results revealed a contamination of plants from markets of Dantokpa, Vossa, and Godomey with heavy metals. Senna from Vossa was higher in cadmium and lead levels (Pb: 2.733 mg/kg ± 0.356 mg/kg; Cd: 0.58 mg/kg ± 0.044 mg/kg) compared to the two other places (Pb: 1.825 mg/kg ± 0.133 mg/kg, Cd: 0.062 mg/kg ± 0.015 mg/kg and Pb: 1.902 mg/kg ± 0.265 mg/kg, Cd: 0.328 mg/kg ± 0.024 mg/kg), respectively, for Dantokpa and Godomey. In terms of risk assessment through the consumption of Senna, the values recorded for lead were nine times higher with children and six times higher with adults than the daily permissive intake (Pb: 3.376 × 10−2 mg/kg/day for children and 2.105 × 10−2 mg/kg/day for adults versus 3.6 × 10−3 mg/kg/day for DPI). With respect to cadmium, there was no significant difference between the recorded values and the DPI (Cd: 1 × 14 10−3 mg/ kg/day for children and Cd: 0.71 × 10−3 mg/ kg/day for adults versus Cd: 1 × 10−3 mg/kg/day for adults). This exposure of the population to lead and cadmium through the consumption of antimalarial healing plants could pose public health problems.