Assessing the Microbiological Level and the Incidence of Water-soaking on the Proximate Composition of two Cultivars of Cowpea (Vigna unguiculata L.) Grains Grown in Côte d’Ivoire

Legumes are rich in protein. However, they are not consumed much because their consumption poses a problem of digestion due to anti-nutritional factors and consumers have a preference for proteins from livestock. It therefore appears useful to promote them. The means used to enhance them was fermentation. This technique improves the nutritional and biological qualities of legumes. The seeds of red bean (cowpea, Vigna unguiculata L.) and soybean (Glycine max L.) sold in the large market of Daloa (Côte d’Ivoire) constituted the biological material of this study. Thus, a spontaneous fermentation of the seeds of these legumes followed by the determination of biochemical parameters was carried out. During spontaneous fermentation, the nutritional value of fermented seed flours was improved by significantly decreasing (P˂0.05) anti-nutritional factors. This reflects the impact of fermentation on improving the organic quality of these legumes. This study revealed that a 24 hour fermentation period is advisable for the population. This time allows keeping a good energy value, an acceptable level of nutrients although the fermentation after 72 hours considerably reduces the anti-nutritional compounds.

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Proximate Composition and Phytochemical Properties of Fresh and Boiled Solanum torvum Consumed in East of Côte d’Ivoire

Asian Food Science Journal ◽

10.9734/afsj/2020/v18i230214 ◽

2020 ◽

pp. 31-40

Author(s):

Kouakou Kouadio ◽

Kouassi Martial-Didier Adingra ◽

Martin Kouadio ◽

William Kwithony Disseka ◽

Oscar Jaures Gbotognon ◽

...

Keyword(s):

Cote D'ivoire ◽

Proximate Composition ◽

Côte D’Ivoire ◽

Local Population ◽

Dry Weight ◽

Solanum Torvum ◽

Cote D’Ivoire ◽

Côte D'ivoire ◽

Two Samples ◽

Calcium Magnesium

Aims: The study aimed to evaluate the nutritional and anti-nutritional factors composition of the Solanum torvum fruit. Place and Duration of Study: Department of Food Sciences and Technology, Biocatalysis and Bioprocessing laboratory of Nangui Abrogoua University (Côte d’Ivoire), between June 2019 and March 2020. Methodology: Proximate composition, mineral element profile and phytochemical composition of fresh and boiled S torvum berries were investigated. The S torvum fruit were harvested fresh. One part was cooked in boiling water for 25 min while the other part did not undergo any treatment. These two samples were dried in an oven at 45°C for 72 hours, ground and analyzed according to official analytical method. Results: The results indicated that the boiling caused the loss of nutrients except moisture, fibers and lipids. It was noted a significant reduction of nutrient and anti-nutrients content of berries after boiling. Boiled berries showed a higher energy value (57.07 Kcal) than fresh ones (53.12 Kcal). Despite the boiling, S torvum berries showed high levels of polyphenols (142.54 mg GAE/100g DW (dry weight)), carotenoids (12.96 mg βCE/100g DW), vitamin C (12.03 mg/100 g FW), fibers (6.88%) and ash (7.23%). Minerals analysis of S torvum berries indicated that it is rich in potassium (2046.77 mg/100 g DW), calcium (340.92 mg/100g DW), phosphorus (238.71 mg/100g DW) and magnesium (234.97 mg/100g DW) with high predicted bioavailability for calcium, magnesium and zinc. S torvum fruit contains also iron (7.97 mg/100g DW) and zinc (8.10 mg/100g DW) which are essential for organism. Conclusion: These data indicated that this Solanum torvum fruit consumed in East of Côte d’Ivoire could constitute a potential good source of nutrients for local population.

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