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Phcogj.Com Phytochemical Screening and Antioxidant Activity of the Fruits of Boscia Senegalensis Pharmacogn J. 2020; 12(5): 1042-1049 A Multifaceted Journal in the field of Natural Products and Pharmacognosy Original Article www.phcogj.com Phytochemical Screening and Antioxidant Activity of the Fruits of Boscia senegalensis (Pers.) Lam. e.g. Pear. (Capparaceae) Awa KA1,2, Kady Diatta Badji1,4, Moustapha Bassimbé Sagna2, Aliou Guissé2,3,4,*, Emmanuel Bassène1,4 ABSTRACT Objective: This study aims to assess the phytochemical composition and antioxidant activity of the fruits (pulp and seeds) of Boscia senegalensis from the Ferlo zone in Northern Senegal. Awa KA1,2, Kady Diatta Badji1,4, Material and Methods: Fruit collection of Boscia senegalensis was carried out in three Ferlo’s Moustapha Bassimbé Sagna2, localities: Tessékéré, Labgar and Ranérou. The sample consists of 36 individuals selected Aliou Guissé2,3,4,*, Emmanuel randomly from each locality. The major chemical groups were determined by conventional Bassène1,4 methods using specific general reagents. The determination of total polyphenols and total flavonoids, the 2,2-diphenyl-1picrylhydrazyl (DPPH.) radical scavenging activity and ferric 1Pharmacognosy and Botany Laboratory, reducing of antioxidant power (FRAP) were evaluated by spectrophotometry. Results and Cheikh Anta Diop University, B.P. 5005, Discussion: The results of the photochemical screening revealed the presence of saponins, Dakar-Fann, SÉNÉGAL. alkaloids, sterols and triterpenes, flavonoids and polyphenols in both parts of the fruit (pulp 2Department of Plant Biology, Faculty of Science and Technology, Cheikh Anta Diop and seeds). Assays carried out on extracts of pulp and seed powders reveals higher levels of University, B.P.5005. Dakar-Fann, SÉNÉGAL. total polyphenols and flavonoids in the pulp. The study of antioxidant activity has shown that 3Human Observatory International hydro-ethanol extracts of pulp and seeds have a very interesting reducing activity, particularly Environment, Tessékéré (UCAD/CNRS), in the pulp. However, we can see a weak antiradical activity of these extracts. The origin SÉNÉGAL. 4UMI 3189 "Environment, Health, Societies", effect has a weak influence on the antiradical and reducing activity of the pulp and seed SÉNÉGAL. extracts. Conclusions: The biological activity of the harvested Boscia senegalensis extracts highlighted in this study could justify the traditional uses of this plant in the treatment of Correspondence several pathologies. This fruit should be consumed in order to prevent few dietary imbalances Aliou Guissé or valorized in order to develop new bioactive compounds. Department of Plant Biology, Faculty of Key Words: Antioxidant activity, , Fruits, Phytochemical screening. Science and Technology, Cheikh Anta Diop Boscia senegalensis University, B.P.5005. Dakar-Fann; Human Observatory International Environment, Tessékéré (UCAD/CNRS); UMI 3189 INTRODUCTION may cause. For this reason, new sources of natural "Environment, Health, Societies", antioxidants are being actively sought.6,7 In recent SÉNÉGAL. Human beings has always lived with his years, the world of biological and medical sciences Phone no: 00-221-77-63896-69; environment where plants offer him enormous has been invaded by a new concept, that of "oxidative E-mail: [email protected] potential for feeding and caring for himself. stress," a situation in which the cell no longer controls History Natural substances derived from plants have the excessive presence of toxic oxygen radicals. • Submission Date: 23-04-2020; aroused growing interest from nutritionists, • Review completed: 08-06-2020; food manufacturers and consumers over the last In this regard, the search for plant sources rich in • Accepted Date: 17-06-2020. ten years. One of many reasons for this growing phenolic compounds to improve human health is interest is the recognition of their antioxidant pushed to the extreme. It is in this context that we DOI : 10.5530/pj.2020.12.147 properties and thus their likely involvement became interested in Boscia senegalensis, a shrub of Article Available online in the prevention of various pathologies the Capparaceae family. http://www.phcogj.com/v12/i5 associated with oxidative stress. They are widely In the Ferlo zone, B. senegalensis is one of the most Copyright used therapeutically as vasoconstrictors, anti- present woody species afterBalanites aegyptiaca © 2020 Phcogj.Com. This is an open- inflammatories, enzyme inhibitors, antioxidants and Leptadenia hastate.8 It is cited among the food 1,2 access article distributed under the terms and antiradicals, and antimicrobials. These 9 of the Creative Commons Attribution 4.0 and medicinal plants for the Ferlo populations. The International license. natural compounds are essentially secondary seeds of the plant are also used as a staple food in 1 metabolites present in all parts of higher plants times of famine in the Sahelian zone in West Africa (fruits, seeds, roots, stems, leaves, flowers, .10 In traditional medicine, it is used in the treatment pollens) and are involved in many physiological of diabetes 10 and male sexual weakness.11 The seeds processes such as cell growth, rhizogenesis, seed are consumed for its anthelmintic and vermifuge germination and fruit ripening.3 properties.12 Secondary metabolites are mainly alkaloids, Given the different medicinal and food uses to phenolic components (phenolic acids, flavonoids, which it is put, it is interesting to review the tannins, and coumarins) and heterosides.4,5 Some biological activities of some families of compounds of these substances cause fewer disorders and are it possesses. The present study aims at the much more easily assimilated by the body than phytochemical characterization of Ferlo’s fruits and synthetic substances, most of which are questioned the evaluation of the antioxidant activity of pulp because of the potential toxicological risks they and seed extracts. Cite this article: Awa KA, Badji KD, Sagna MB, Guisse A, Bassene E. Phytochemical Screening and Antioxidant Activity of the Fruits of Boscia senegalensis (Pers.) Lam. e.g. Pear. Phcogj.com (Capparaceae). Pharmacogn J. 2020;12(5):1042-9. 1042 Pharmacognosy Journal, Vol 12, Issue 5, Sep-Oct, 2020 Awa, et al.: Phytochemical Screening and Antioxidant Activity of the Fruits of Boscia senegalensis (Pers.) Lam. e.g. Pear. (Capparaceae) MATERIALS AND METHODS (80v/20v) under reflux for 30 min. The resulting filtrate was evaporated under vacuum using a rotary evaporator until a dry residue of hydro- Biological materials ethanol extract was obtained. Boscia senegalensis is a species of perennial woody plant (Figure 1A) of Phytochemical screening the genus Boscia belonging to the Capparaceae family (Capparales). It is a shrub or bush 1 to 5 m high, conical in shape, with a very dense crown The phytochemical study consisted of researching the chemical families and small diameter trunks with many branches. The leaves of the plant of seeds and pulp. This research was carried out, using the classical are small and solid. The plant produces fruits grouped in small clusters methods of identification of the major chemical families (alkaloids, (Figure 1B), in the form of spherical yellow berries that are yellow at saponosides, flavonoids, tannins, cardiotonic heterosides, anthracenes, 13 maturity and up to 8 mm in diameter. These fruits contain 1 to 4 whitish sterols and triterpenes) by general reagents. 11 nuts (Figure 1C) and the edible kernel is greenish when ripe. Determination of total polyphenols Sampling The determination of total polyphenols is based on the redox reaction The samples were taken in three Ferlo’s localities: Tessékéré, Labgar and using the Folin Denis reagent which is a mixture of sodium tungstate 13 Ranérou. The choice of the 3 localities was motivated by the availability (Na2WO4.2H2O) and (12MoO3.H3PO4) phosphomolybdic acid. and the importance given to this species from the nutritional, The determination of phenolic compounds is preceded by an extraction therapeutic and fodder point of view. The collection of fruits of B. step carried out with a methanol-water mixture. The extraction of senegalensis was carried out in July 2018 in the natural stands of the phenolic compounds by maceration consists of mixing 0.4 g of seed species. The sample consists of 36 individuals per locality. From each individual we collected as many ripe fruits as possible from different or pulp grind with 20 ml of 60% methanol. The mixtures are then branches. Three composite batches, intended for phytochemical subjected to magnetic stirring for one hour and filtered on filter paper. analyses, were then constituted per site. The extracts are centrifuged at 5000 rpm for 10 min and the supernatant is recovered. Sample preparation The actual assay is performed with 2 mL of extract plus 2 mL of Folin The composite fruit samples were first removed from their epicarp Denis reagent. The mixture is homogenized with vigorous stirring. by hand and then pulped in distilled water using a Moulinex mixer. After 3 min incubation, 2 mL of a Na2CO3 solution (12.4% in water) After filtration, the aqueous pulp extract obtained is evaporated using a is added to the mixture, stirred and incubated for 2 hours at room rotary evaporator and then dried in an oven under ventilation to obtain temperature in the dark. The sample is then centrifuged at low speed a dry pulp residue. The seed samples are dried in the shade and then until the particulate matter is deposited. The reaction produces a blue in an oven at 50°C, then shelled, crushed and sieved to obtain almond coloration whose absorbance is read at 725 nm against a distilled powder for analysis. water blank.13 The calibration range is performed with a tannic acid For the study of the antioxidant activity of seeds and pulp, 20 g of seed standard. The results are expressed in mg tannic acid equivalent per or pulp powder was decocted with 200 mL of ethanol-water mixture g dry matter. A B C Figure 1: Boscia senegalensis: (A) adult individual; (B) cluster fruit; (C) fruit nuts Pharmacognosy Journal, Vol 12, Issue 5, Sep-Oct, 2020 1043 Awa, et al.: Phytochemical Screening and Antioxidant Activity of the Fruits of Boscia senegalensis (Pers.) Lam.
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