Soumbara is produced in an artisanal way. This product has a relatively strong odor that is not appreciated by some consumers in Côte d'Ivoire. From surveys of women and consumers, the manufacturing technique and the motivations for consumption of soumbara were revealed. For the chemical composition, the average water content is 13.33 ± 1.52 g/100 g MF, the average value of the ash content is 4 ± 0 g/100 g MS. The total protein and lipid levels are 16.37 ± 0.71 g/100 g DM and 21.55 ± 0.46 g/100 g DM respectively. Total carbohydrates, starch and total sugars are respectively 44.33 ± 1.46 g/100 g DM, 39.82 ± 32 g/100 g DM and 0.08 ± 0.01 mg glucose /mL. Concerning the phytochemical composition, the total polyphenols and total flavonoids have respectively contents of 2.74 ± 0.01 mg Eq AG mL of extract, and 0.82 ± 0.01 mg Eq Quer/mL of extract. The study notes that the iron and potassium contents are the most important with respectively 344.43 ± 1.20 µg/g and 174.5 ± 2.71 mg/g. The consumption survey revealed that soumbara produced in Côte d'Ivoire is relatively more consumed (55.77%) than that produced in other countries (44.23%). This artisanal product is appreciated for its taste (50.97%) and its therapeutic character (37.5%) in the form of grain (68.27%), powder (23.08%) or paste (8.65%). These data show that soumbara is very rich in nutrients, polyphenols and flavonoids. These results justify the numerous uses of this ingredient, both in food and in traditional medicine.
Our study aims at improving the nutritional quality of eggplant fruits through application of organic fertilization. The study was conducted in Bingerville (located in the south of Côte d'Ivoire and west of Abidjan city), from April to August 2019. The work consisted in assessing, in a randomized complete block design, the effects of five manures on the biochemical parameters of Kalenda eggplant (Solanum melongena L.) fruits. The manures studied were T1: chicken manure, T2: chicken manure + plantain peel compost, T3: chicken manure + plantain peel potash, T4: plantain peel compost, T0: no fertilizer, T5 (positive control): NPK (10 18 18) + Urea (46% N) + Potassium sulphate (K2SO4). The results showed that fiber, protein, lipid, sodium and iron contents were not influenced by the different treatments. However, treatments T5 (NPK (10 18 18) + Urea (46% N) + Potassium sulphate (K2SO4)), T4 (plantain peel compost), T3 (chicken manure + plantain peel potash) and T2 (chicken manure + plantain peel compost) induced the highest carbohydrate and energy content of fruits. With respect to phosphorus and potassium, treatments T5 (NPK (10 18 18) + Urea (46% N) + Potassium sulphate (K2SO4)), T4 (plantain peel compost) and T3 (chicken manure + plantain peel potash) had higher phosphorus values than those of other fertilizers T2 (chicken manure + plantain peel compost), T1 (chicken manure) with an average of 27; 26.58 and 25.491 mg per 100 g FM, respectively. Plants grown on the sites fertilized with chemical treatment T5 (NPK (10 18 18) + Urea (46% N) + Potassium sulphate (K2SO4)) produced the fruits richest in potassium with an average equal to 255.16 mg per 100 g FM, followed by treatment T3 (chicken manure + plantain peel potash) (245.5 mg/100g FM). For magnesium and calcium, treatments T3 (chicken manure + plantain peel potash) and T5 (NPK (10 18 18) + Urea (46% N) + Potassium sulphate (K2SO4)) were characterized by the lowest contents, thus reflecting an antagonism between potassium and these minerals. From this study, it appears that plantain peel applied as an organic fertilizer on eggplant is a source of potassium, phosphorus, carbohydrates and energy for a good nutritional balance of the body.
This study aims at assessing the effects of plantain (Musa paradisiaca) peel powder on soil physical and chemical properties in the context of sustainable yield management. The experiment took place in the laboratory of plant physiology of the University Félix Houphouët Boigny from July to November 2020. Three designs were set up. Design 1 consisted of 20 g of plantain peel powder added to a 2-cm thick layer of sea sand. Design 2 consisted of 5 g of plantain peel powder added to 250 g of sea sand. Design 3 consisted of a homogeneous mixture of 100 g of peel powder and 200 g of rhizospheric tomato or plantain soil. The designs were regularly watered with distilled water. In the first two designs, the plantain peel powder was added according to two methods. These included surface incorporation and deep incorporation. The experiment allowed us to characterize peel powder decomposition and assess its effects on soil physicochemical parameters. The physico-chemical characteristics of the soils were subjected to a one-way analysis of variance (ANOVA 1). STATICA 7.1 software was used to perform all the analyses. Analysis of the results showed that the incorporation method does not influence peel powder decomposition. This decomposition is followed by the release of colored elements. Water retention capacity as well as particle size were improved. The results showed that plantain peel powder is an important source of minerals mainly phosphorus and potassium. It emerges from this study that plantain peel could be a good organic fertilizer for profitable and environmentally friendly agriculture.
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