African Journal of
Biochemistry Research

  • Abbreviation: Afr. J. Biochem. Res.
  • Language: English
  • ISSN: 1996-0778
  • DOI: 10.5897/AJBR
  • Start Year: 2007
  • Published Articles: 418

Full Length Research Paper

Phytochemical and biological investigations of extracts from the roots of Cocos nucifera L. (Arecaceae) and Carica papaya L. (Caricaceae), two plants used in traditional medicine

Wendkouni Leila M. Esther Belem-Kabré
  • Wendkouni Leila M. Esther Belem-Kabré
  • Laboratoire de Biochimie et Chimie Appliquée (LABIOCA), Ecole Doctorale Sciences et Technologie, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso.
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Boukaré Kaboré
  • Boukaré Kaboré
  • Département Médecine et Pharmacopée Traditionnelles – Pharmacie (MEPHATRA-PH), Institut de Recherche en Sciences de la Santé (IRSS/CNRST), 03 BP 7047 Ouagadougou 03, Burkina Faso.
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Adjaratou Compaoré-Coulibaly
  • Adjaratou Compaoré-Coulibaly
  • Laboratoire de Biochimie et Chimie Appliquée (LABIOCA), Ecole Doctorale Sciences et Technologie, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso.
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Tata Kadiatou Traoré
  • Tata Kadiatou Traoré
  • Département Médecine et Pharmacopée Traditionnelles – Pharmacie (MEPHATRA-PH), Institut de Recherche en Sciences de la Santé (IRSS/CNRST), 03 BP 7047 Ouagadougou 03, Burkina Faso.
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Emmanuel A. M. Thiombiano
  • Emmanuel A. M. Thiombiano
  • Laboratoire de Biochimie et Chimie Appliquée (LABIOCA), Ecole Doctorale Sciences et Technologie, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso.
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Mariam Nebié-Traoré
  • Mariam Nebié-Traoré
  • Laboratoire de Biochimie et Chimie Appliquée (LABIOCA), Ecole Doctorale Sciences et Technologie, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso.
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Moussa Compaoré
  • Moussa Compaoré
  • Laboratoire de Biochimie et Chimie Appliquée (LABIOCA), Ecole Doctorale Sciences et Technologie, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso.
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Félix B. Kini
  • Félix B. Kini
  • Département Médecine et Pharmacopée Traditionnelles – Pharmacie (MEPHATRA-PH), Institut de Recherche en Sciences de la Santé (IRSS/CNRST), 03 BP 7047 Ouagadougou 03, Burkina Faso.
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Sylvin Ouédraogo
  • Sylvin Ouédraogo
  • Département Médecine et Pharmacopée Traditionnelles – Pharmacie (MEPHATRA-PH), Institut de Recherche en Sciences de la Santé (IRSS/CNRST), 03 BP 7047 Ouagadougou 03, Burkina Faso.
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Martin Kiendrebeogo
  • Martin Kiendrebeogo
  • Laboratoire de Biochimie et Chimie Appliquée (LABIOCA), Ecole Doctorale Sciences et Technologie, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso.
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Noufou Ouédraogo
  • Noufou Ouédraogo
  • Laboratoire de Biochimie et Chimie Appliquée (LABIOCA), Ecole Doctorale Sciences et Technologie, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso.
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  •  Received: 21 November 2020
  •  Accepted: 20 January 2021
  •  Published: 31 July 2021

Abstract

Cocos nucifera L. (Arecaceae) and Carica papaya L. (Caricaceae) are two plants used to treat several human pathologies such as oxidative stress and inflammatory diseases. The aim of this study is to assess anti-inflammatory activity, antioxidant activity and acute oral toxicity, of aqueous and methanolic extracts from C. nucifera L. and C. papaya L. using appropriate experimental models. The acute oral toxicity test of extracts on mice was evaluated using Economic Cooperation and Development (OECD) guidelines 423. The capacity of extracts to inhibit key inflammation enzymes such as 15-lipoxygenase, phospholipase A2, cyclooxygenases 1 and 2 was evaluated in vitro. The antioxidant activity was assessed in vitro using four methods (inhibition of lipid peroxidation, FRAP, DPPH and ABTS tests). The phytochemical screening showed the presence of sterols and triterpenes, saponins, flavonoids, phenolics and tannins. Methanolic extract from C. nucifera exhibited higher values of 855.06 ± 1.71 mg GAE/ g, 418.22 ± 1.92 mg CE / g, 19.31 ± 0.6 mg GAE / g, 20.6 ± 0.36 mg QE / g dry extract respectively for phenolics, condensed tannins, hydrolysable tannins and flavonoid content. The extracts demonstrated antioxidant capacity, potential to inhibit pro-inflammatory enzymes and a lethal dose (LD50) was estimated to 5000 mg/kg b.w. The results of this study constitute a solid scientific basis that can justify the traditional uses of these plants.

 

Key words: Cocos nucifera, Carica papaya, phytochemistry, acute oral toxicity, antioxidant, anti-inflammatory.