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Phytochemical Screening and Assays of Phenolic Compounds in Senna occidentalis L. Leaf and Seed Extracts

¹ Ecole Supérieure Polytechnique, Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), Université Cheikh Anta Diop, Dakar, Sénégal
² Ecole Supérieure Polytechnique, Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), Université Cheikh Anta Diop, Dakar, Sénégal
³ Laboratoire de Valorisation des Produits de la Biomasse, Département de Chimie, Université Cheikh Anta Diop de Dakar, Dakar, Sénégal
⁴ Unité de Chimie du Végétal et de la Vie, Faculté des Sciences et Techniques, Université Marien NGOUABI, Brazzaville, Republic of the Congo
⁵ Ecole Supérieure Polytechnique, Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), Université Cheikh Anta Diop, Dakar, Sénégal
⁶ Laboratoire de Chimie Organique et Bio-Organique, Département de Chimie, Faculté des Sciences et Techniques/UCAD, Université Cheikh Anta Diop, Dakar, Sénégal
⁷ Ecole Supérieure Polytechnique, Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), Université Cheikh Anta Diop, Dakar, Sénégal
⁸ Ecole Supérieure Polytechnique, Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), Université Cheikh Anta Diop, Dakar, Sénégal
⁹ Ecole Supérieure Polytechnique, Centre d’Etudes sur la Sécurité Alimentaire et les Molécules Fonctionnelles (CESAM-RESCIF), Université Cheikh Anta Diop, Dakar, Sénégal

Food and Nutrition Sciences·Volume 15 (2024)·Pages 499–508·Published 10 July 2024·DOI10.4236/fns.2024.157033

Abstract

Phytochemical screening and assay of secondary metabolites, crude extracts with distilled water, aqueous methanol, aqueous acetone and aqueous ethanol of leaves and seeds of Senna occidentalis L. were studied in this work. The aim was to verify the distribution of secondary metabolites according to S . occidentalis organs. Four leaf samples from four different localities (South, East, West and Central Senegal) and a mixed sample of seeds were used. Functional molecules such as polyphenols, flavonoids and tannins were then assessed in the leaves and seeds using various standard methods. The results show that Senna occidentalis L. leaf and seed samples display an identical and homogeneous profile, regardless of locality. They contain secondary metabolites and the polyphenol content of extracts from southern, eastern, western and central leaves is: 0.620 - 0.539 - 0.811 - 0.573 g GAE/100 g DM; flavonoids: 0.064 - 0.074 - 0.130 - 0.101 g CE/100 g DM and tannins: 0.326 - 0.264 - 0.269 - 0.494 g TAE/100 g DM. The efficacy of S. occidentalis L. infusions in therapy is thus justified by the presence of these metabolites, whose biological properties are well known. It is then possible to explore isolation of active principles of Senna occidentalis L. leaves and even seeds for producing medicines.

KeywordsSenna occidentalis L.Total PolyphenolsFlavonoidsTannins

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Phytochemical Screening and Assays of Phenolic Compounds in Senna occidentalis L. Leaf and Seed Extracts

Abstract

References (32)