Plus de 50 % du riz local contaminé : L'alerte choc des experts sur des risques de cancer du foie
Some locally grown rice consumed in Dakar contains aflatoxin contamination levels exceeding permitted limits. This was revealed by a monitoring program conducted in the regions of Dakar, Thiès, and Kaolack, the results of which were presented this Wednesday, July 22nd, at the Fann Hospital Poison Control Center. Faced with this finding, specialists are raising the alarm about this highly carcinogenic toxin, which can contribute to the development of liver cancer, and are calling for an urgent strengthening of food safety monitoring.
Professor Amadou Diop, President of the Senegalese National Codex Committee, explained that this study is part of efforts to strengthen the national food safety system. Rice was specifically targeted because of its central role in the Senegalese diet. "Since rice is one of the most consumed foodstuffs, the aim was to assess the extent to which the product we consume is contaminated by aflatoxins," he emphasized.
In total, 200 rice samples were collected from restaurants and suppliers in the three pilot regions and then analyzed by the accredited laboratory of the Food Technology Institute (ITA). The results revealed that 30 samples, or 22.6%, had aflatoxin levels exceeding regulatory limits. Even more concerning, all cases of non-compliance were recorded exclusively in Dakar, while no exceedances were detected in the samples from Thiès and Kaolack. According to Professor Diop, locally grown rice is the most affected, with samples taken at the TILÈNE and Petersen markets revealing more than 50% contaminated.
Aflatoxins are mycotoxins secreted by fungi of the genus Aspergillus , capable of contaminating cereals during harvest or storage. "These contaminants are known to be carcinogenic and are suspected of contributing to liver cancer, a disease that already constitutes a major public health problem in Senegal," the researcher warned.
The expert, however, urges caution against drawing hasty conclusions. Since the study was limited to three pilot regions, he recommends expanding the mapping to obtain a comprehensive overview at the national level, particularly in the country's major rice-growing areas. "This monitoring must be extended to production zones and this system made sustainable to guarantee effective public health protection," argued Professor Amadou Diop.
The report's authors also recommend strengthening the national food safety system, revising the strategic plan in place since 2018, and intensifying inspections throughout the distribution chain. Pending these institutional adjustments, the chair of the National Codex Committee urges households to exercise extreme caution: "It is essential to remain vigilant regarding the quality of the products consumed and to strictly adhere to good hygiene, washing, cooking, and handling practices. Vigilance should not be limited to aflatoxins alone, but should extend to all food contaminants."
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