The aqueous extracts of different parts (old leaves (OL), young leaves (YL), peels (PE) and delipidated seed residues (DS)) of three varieties of papaya are studied. Extraction conditions are optimized: an extraction time of 20 minutes, a temperature of 70˚C and a plant material/water mixture of 1% give the best yield of polyphenol. The amount of polyphenols, flavonoids, saponins and proanthocyanins of each aqueous extract was investigated. Antioxidant activities are measured using two different methods (DPPH and ABTS). The delipidated seeds (DS) of V1 have the highest total phenolic content (TPC = 72.56 ± 3.16 mg GAE/g) while they have the lowest total flavonoid content (TFC = 0.22 ± 0.01). With regard to saponins, the PE of V3 is much richer in saponins (194.03 ± 15.78 mg AeE/g) than all the other extracts studied. The OL of V2 and PE of V1 contain the most proanthocyanidins with very similar values of 2.51 ± 0.03 mg CE/g and 2.53 ± 0.34 mg CE/g respectively. The study of the antioxidant activities of the extracts showed a correlation between the amount of polyphenols and IC50. DPPH OL and YL V2, which are rich in polyphenols, have the lowest IC50 of 0.072 mg/ml and 0.080 mg/ml respectively, whereas for ABTS we have PE of V1 that is very rich in polyphenols which has the smallest IC50 value of 0.218 mg/ml.

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La nécessité d'habilitation des plantes utilisées en médecine traditionnelle africaine a suscité des investigations sur Momordica charantia Linn (Cucurbitaceae) dont les connaissances sont empiriques. L'étude ethnobotanique a été menée dans quatre (4) régions du Sénégal pendant la campagne 2016/2017, dans le but de préciser ses différents usages en pratiques médicales et voire alimentaires. Lesrésultats montrent que les feuilles et la tige sont utilisées chacune dans 91,50% des cas. Elles sont utilisées essentiellement pour traiterles dermatoses (92%), la fatigue (90,5%), les maux de ventre (90,5%), le paludisme (87,5%), les hémorroïdes (56,5%). Les fruits, baies de petites tailles, de 5 à 15 cm de diamètre, jaune orangéavec une pulpe rouge sont consommés dans 38% des cas mais ne font l'objet d'aucune transformation. Les graines de 10 à 16 mm ne sont aucunement pas consommées au Sénégal même si elles contiennent de l'huile. Ces premiers résultats constituent une contribution dans la mise en place d'une base de données ethnobotanique sur Momordica charantia au Sénégal et ouvrent des perspectives de recherche sur l'apport nutritionnel du fruit et de la composition de son huile.

Boumkaye is a traditional fermented millet-based drink (Pennisetum glaucum L.) produced in Casamance (region in Senegal). Unknown and circumcised beverage, it has therapeutic properties due to aqueous creeper extracts from Abrus pulchellus plant and naturally present during the process. The objective of this work was to investigate the fabrication process of a millet-based beverage as an alternative source of nutrients. The diagnosis of beverage production by monitoring its physical and chemical parameters during two months of storage at room temperature was studied. The established manufacturing process, composed by a production of aqueous extracts after maceration of the Abrus pulchellus vines, a preparation of millet slurry, and a fermentation step to obtain the Boumkaye, has several features. The study of aging process showed probable lactic and alcoholic fermentations. Further, the finished Boumkaye was characterized by a high acidity (pH of 3), an alcohol content of 5 g/100g and contains an appreciable amount of polyphenols (54.46 mg/100g).

Mead is a beverage obtained by alcoholic fermentation of honey, with an ethanol content of 8% to 18% by volume. In Africa, mead manufacturing methods rely on heating honey and adding extracts of fruits, herbs or spices. "Bessoudioury" mead is then prepared according to the traditional process of the Bassari and Bedick peoples of Kedougou (Senegal). This work on "Bessoudioury" aims to describe and characterize the manufacturing processes. It was also to evaluate the chemical and microbiological characteristics. The study focused on three Kedougou production sites. The manufacturing process of "Bessoudioury" includes a honey heating, a formulation step by adding wine of either Borassus aethiopicum Mart. or Elaeis guineensis. This step is followed by a fermentation's one during two days. Wine is considered as the essential sources of yeasts for the production of alcohol. "Bessoudioury" has an ethanol content of 8% (v/v). Moulds and Streptococcus were not detected in this mead. According to its polyphenols content, this mead has a nutritional interest, but the process deserves to be reviewed to preserve nutrients.