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Vegetables are usually consumed raw. This implied best hygienic conditions from the harvest to the processing because of the gastro-enteritis that they could provoke. This study was conducted with the aim to appreciate microbiological quality of raw tomatoes, endives and ready-to-eat products sold in markets. Samples were taken randomly in two markets of Abidjan. A microbiological analysis was done in order to identify and enumerate faecal coliforms, Escherichia coli, Enterococcus and Pseudomonas. A decontamination treatment based on washing samples with running water and sodium hypochlorite solution I° chlorymetric was also applied to tomatoes and endives. The results indicated that, for tomatoes and endives, the average load was 1.5.10 4 CFU/g of Enterococcus, 1.3.10 3 CFU/g of Pseudomonas and 1.7.10 2 CFU/g of faecal coliforms. In ready-to-eat products, the load was 9.3.10 1 CFU/g for Enterococcus, l.03.10 1 CFU/g for Pseudomonas and 9.9.10 1 CFU/g for faecal coliforms. The disinfection with a sodium hypochlorite solution l° chlorymetric reduced Enterococcus and faecal coliforms load to 98% and Pseudomonas load to 97% as compared to the washing with running water in which Enterococcus was only reduced to 80%, faecal coliforms to78% and Pseudomonas to 73%. Escherichia coli were isolated in 28 samples as follow: 15 stumps from endives (54%), 10 stumps from tomatoes (36%) and 3 stumps from ready-to-eat products (10%). Results showed that before consumption, vegetables need to be washed, cleaned and disinfected. This will avoid sanitary hazard.

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Les blooms de cyanobactéries surviennent dans les eaux de surface, en particulier dans les eaux où les conditions physiques et les charges en éléments nutritifs sont favorables à leur prolifération. L'objectif de ce travail a été de déterminer les principaux paramètres physico-chimiques favorisant l'efflorescence des cyanobactéries dans le Sud-Est de la Côte d'Ivoire. La distribution des cyanobactéries et le déterminisme de leur développement ont été étudiés de juin à octobre sur la lagune Aghien, les retenues d'Adzopé et d'Agboville. Les paramètres physico-chimiques ont été mesurés et la composition ainsi que la densité des cyanobactéries ont été réalisés. Le niveau de turbidité, la température, la quantité de phosphates, la quantité de nitrite et la quantité de phosphore sur les sites sont les facteurs déterminants l'abondance des cyanobactéries sur les sites. Un maximum de 39,4x10 6 cellules/ml a été rencontré au mois d'octobre. Les genres dominants sont Microcystis (40%), Anabaena (plus de 14%), Aphanocapsa (10%) et Oscillatoria (8%) dans les milieux étudiés. Ce sont en effet des genres potentiellement toxiques. De plus, pendant la période d'échantillonnage des blooms à Microcystis en juin, les associations Microcystis-Planktothrix en juillet et Microcystis-Anabeana en septembre, ont été observés. La prolifération des cyanobactéries dans les plans d'eau étudiés est sous le contrôle de l'hypereutrophisation à travers la concentration en nutriment mais aussi des paramètres physiques. © 2017 International Formulae Group. All rights reserved.Mots clés : Cyanobactéries, lagune Aghien, déterminisme, prolifération, Côte d'Ivoire.Determination of the proliferation of toxic cyanobacteria in Côte d'Ivoire ABSTRACT Cyanobacteria blooms occur in surface waters, especially in waters where physical conditions and nutrient loads are favourable for their proliferation. The aim of this work was to determine the main physicochemical parameters favoring the efflorescence of the cyanobacteria in the South-East of Côte d'Ivoire. The distribution of cyanobacteria and the determinism of their development were studied from June to October on the Aghien lagoon, the Adzopé and Agboville reservoirs. Physico-chemical parameters were measured and also the composition and density of the cyanobacteria. The level of turbidity, temperature, quantity of J. COULIBALY-KALPY et al. / Int. J. Biol. Chem. Sci. 11(1): 266-279, 2017 267 phosphates, amount of nitrite and amount of phosphorus are factors determining the abundance of cyanobacteria at the sites. A maximum of 39.4x10 6 cells / ml was encountered in October. The dominant genera are Microcystis (40%), Anabaena (more than 14%), Aphanocapsa (10%) and Oscillatoria (8%) in the studied area. These are indeed potentially toxic genera. In addition, during sampling period, blooms of Microcystis in June, the Microcystis-Planktothrix associations in July and Microcystis-Anabeana in September were observed. The proliferation of cyanobacteria in the studied water bodies is under the control of h...