2 research outputs found

    Characterization of Waste From Attiéké Factory: Case of Azito Village (Abidjan, Côte d’Ivoire)

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    The control of the anaerobic digestion of cassava residues from attiéké factories requires their characterization to offer a better working environment to attiéké producers. This study concerns at first the quantity of solid residues of cassava, dough of crushed cassava and other waste generated by the process of attiéké production. The second aspect concerns the determination of some physicochemical parameters (COD, TKN, pH, COD/TKN). These two aspects were realized thanks to the use of a bag in synthetic fibers, a dynamometric steelyard with dial of diameter 17 cms, and the use of a gradual can of capacity 20 L. The results of this study showed that an average quantity of 1.53 tonne of manioc handled (treated) generates 1.14 m3 of effluents and 0.16 tonne of solid waste per day. These effluents are acid with a pH ranged between 2.54 and 4.80. So they have on average a DCO of 58.79 g/L for 0,71 g/L of nitrogen. All these parameters help control the optimal conditions of anaerobic digestion of cassava effluents in the manufacturing process of attiéké

    Caractérisation De Quelques Légumes-Feuilles Les Plus Consommés Dans La Ville De Daloa (Centre-Ouest, Côte d’Ivoire)

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    L’objectif de cette Ă©tude a consistĂ© de recenser Ă  travers une enquĂŞte, les diffĂ©rentes espèces de lĂ©gumes-feuilles les plus consommĂ©s dans la ville de Daloa. Ensuite, dĂ©terminer quelques paramètres physico-chimiques, nutritionnels, antinutritionnels et antioxydants de ces lĂ©gumes-feuilles. L’enquĂŞte menĂ©e auprès de la population a permis d’identifier quatre lĂ©gumes-feuilles (,Ipomoea batatas L., Colocasia esculenta L., Spinacia oleracea L.et Manihot esculenta Crantz) qui ont Ă©tĂ© les plus consommĂ©s. Dix-neuf (19) paramètres regroupĂ©s en quatre (04) grands groupes [physico-chimiques (pH, aciditĂ©, humiditĂ© et degrĂ© Brix), composĂ©s biochimiques (fibres, lipides, protĂ©ines, glucides totaux, valeur Ă©nergĂ©tique, fer et calcium), composĂ©s antioxydants (vitamine C, flavonoĂŻde et polyphĂ©nols totaux) et composĂ©s antinutritionnels (oxalates, phytates, Oxalates/Calcium et Phytates/Fer)] ont fait l’objet d’analyse dans ces lĂ©gumes-feuilles. Les analyses effectuĂ©es indiquent des valeurs de pH (6,22 ± 0,02 Ă  6,67 ± 0,01) ; de taux d’humiditĂ© (78,02 ± 0,25 Ă  93,75 ± 0,12 %) et de cendre (0,79 ± 0,01 Ă  0,95 ± 0,01 %). Les minĂ©raux sont importants avec des teneurs en Fer (15,07 ± 0,24 Ă  40,06 ± 0,07 mg/100g) et en Calcium (111,02 ± 0,29 Ă  246,28 ± 0,67 mg/100g). Les analyses biochimiques indiquent de fortes teneurs en glucides (71,26 ± 0,25 Ă  90,85 ± 0,12 %), en protĂ©ines (1,82 ± 0,12 Ă  5,22 ± 0,18 %) et en fibres (0,55 ± 0,07 Ă  10,00 ± 0,14 %), mais de faibles teneurs en lipides (0,29 ± 0,02 Ă  0,69 ± 0,04 %). L’analyse des antioxydants a rĂ©vĂ©lĂ© que la teneur en polyphĂ©nol (107,28 ± 0,74 Ă  195,34 ± 0,96 mg/100g) est supĂ©rieure Ă   celle de la vitamine C (22,92 ± 0,72 Ă  40,83 ± 0,72 mg/100g) et Ă  celle des flavonoĂŻdes (2,38 ± 0,32 Ă  7,73 ± 0,20 mg/100g) quel que soit le lĂ©gume Ă©tudiĂ©. L’analyse des composĂ©s antinutritionnels a rĂ©vĂ©lĂ© une teneur Ă©levĂ©e en oxalates (44,20 ± 1,27 Ă  64,75 ± 0,52 mg/100g) et en phytates (48,65 ± 0,87 Ă  65,75 ± 0,65 mg/100g) dans les quatre lĂ©gumes-feuilles. En somme, ces lĂ©gume-feuilles pourraient constituer un complĂ©ment alimentaire important, car ils sont une bonne source de minĂ©raux, de fibres, de glucides, de protĂ©ine et de composĂ©s antioxydants. The objective of this study was to identify through a survey, the different species of leafy vegetables most consumed in the city of Daloa. Then, to determine some physico-chemical, nutritional, antinutritional and antioxidant parameters of these leafy vegetables. The survey conducted among the population identified four leafy vegetables (,Ipomoea batatas L., Colocasia esculenta L., Spinacia oleracea L.and Manihot esculenta Crantz) that were the most consumed. Nineteen (19) parameters grouped into four (04) major groups [physico-chemical (pH, acidity, moisture and Brix degree), biochemical compounds (fiber, lipids, proteins, total carbohydrates, energy value, iron and calcium), antioxidant compounds (vitamin C, flavonoid and total polyphenols) and anti-nutritional compounds (oxalates, phytates, Oxalates/Calcium and Phytates/Iron)] were analyzed in these leafy vegetables. The analyses performed indicate values for pH (6.22 ± 0.02 to 6.67 ± 0.01); moisture content (78.02 ± 0.25 to 93.75 ± 0.12%) and ash (0.79 ± 0.01 to 0.95 ± 0.01%). Minerals are important with Iron (15.07 ± 0.24 to 40.06 ± 0.07 mg/100g) and Calcium (111.02 ± 0.29 to 246.28 ± 0.67 mg/100g) contents. Biochemical analyses indicate high levels of carbohydrates (71.26 ± 0.25 to 90.85 ± 0.12%), protein (1.82 ± 0.12 to 5.22 ± 0.18%) and fiber (0.55 ± 0.07 to 10.00 ± 0.14%), but low levels of lipids (0.29 ± 0.02 to 0.69 ± 0.04%). Antioxidant analysis revealed that polyphenol (107.28 ± 0.74 to 195.34 ± 0.96 mg/100g) is higher than vitamin C (22.92 ± 0.72 to 40.83 ± 0.72 mg/100g)  and flavonoids (2.38 ± 0.32 to 7.73 ± 0.20 mg/100g) in all vegetables. The analysis of anti-nutritional compounds revealed high levels of oxalates (44.20 ± 1.27 to 64.75 ± 0.52 mg/100g) and phytates (48.65 ± 0.87 to 65.75 ± 0.65 mg/100g) in all four leafy vegetables. In summary, these leafy greens could be an important dietary supplement because they are a good source of minerals, fibre, carbohydrates, protein and antioxidant compounds
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