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.
The seeds of six okra varieties namely Tomi, GB2/04Ab, GB9/04La, GB4/04BB, GB8/04KB and Indiana were analysed for their oil content during fruits maturation. Mature seeds of this vegetable were characterized for their masses, density, physical properties and composition of lipids. The results indicated that lipids increased with maturation process. GB2/04Ab variety had the most elevated lipid level at maturity (22.55 ± 0.15%) and GB4/04BB the least elevated one (13.52 ± 0.08%). Mature seeds had a high density. The iodine value increased from 52.67 ± 1.25 mg I 2 /100 g (Tomi) to 102.17 ± 0.49 mg I 2 /100 g (Indiana). GB2/04Ab had the lowest peroxide value of 2.16 ± 1.92 meq O 2 /kg and Indiana, the lowest saponification value (137.7 ± 2.75 mg/g). The fatty acids identified were capric, lauric, palmitic, myristoleic, stearic, oleic, linoleic and behenic acids. However, saturated fatty acids proportion was more important than unsaturated one varying respectively from 58.07% to 70.96% and from 29.04% to 41.93%. Therefore, okra mature seeds oil is stable to autoxidation.
Objectives: The aim of the study is to evaluate the use of local flours in supplementary feeding for 6 to 24 month old children in relation to their nutritional status in Abidjan.Methods: A cross-sectional survey was conducted on 480 mother-child couples in twelve maternal and child protection centers located in four municipalities in Abidjan. Questionnaires focused on the economic characteristics of mothers, the frequency of use of local flours, sources of local flours, ingredients used for flour production. The local composite flours mainly consumed by the children were sampled for biochemical analysis.Results: Our of the 480 mothers, 73% had an income-generating activity and 27% had no activity, 10% of them were students. About 13% of the mothers with income-generating activities use only local flours, 10% of them mainly use industrial flours and 50% alternately use local flours and industrial flours. All mothers used cereals for flour production, 1% of the mothers used cassava and 98.54% used soya flour as supplement. The local flour mainly consumed, "Anango baka" with two variants, was unbalanced as far as its nutrient composition is concerned. The nutritional status of the children surveyed showed that stunting was the most widespread form of malnutrition with a prevalence of 17.9%. Conclusion:The three local composite flours used by the mothers showed a poor nutritional value. A high rate of chronic malnutrition has been reported for 6 to 24 month old children visiting maternal and child protection centers located in Abidjan.
Sweet potato (Ipomea batatas) leaves are among the leafy vegetables most consumed by Ivorian population. In order to preserve iron and folic acid, and to eliminate phytates, a study of optimization of water cooking of these leaves was conducted. Response surface methodology was employed to describe the effects of cooking time and leaf quantity on iron, folic acid and phytate contents of sweet potato leaves using a central composite design. Response surfaces and isoresponse curves were plotted to visualize areas of interest (optimal points). Results showed that the experimental data were adequately fitted into the second-order polynomial model. Cooking time had significant effects (P < .05) on folic acid and phytate contents. The effect of leaf quantity was significant (P < .01) on the three response variables. In addition, the optimal points were located in areas of the experimental domain where iron and folic acid contents were high. Therefore, three optimal conditions for water cooking (cooking time, leaf quantity) were identified: (10 min, 400 g), (7.93 min, 300 g) and (22.07 min, 441.4 g). Under these conditions, iron and folic acid contents (mg/100 g) were: (49.17, 12.58), (37.00, 16.27) and (48.77, 11.26), respectively. These results could be exploited to formulate iron and folic acid supplementation products from sweet potato leaves.
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