ISSN 2169-303X
International Journal of Medicinal Plants Research ISSN 2169-303X Vol. 7 (5), pp. 387-392, May, 2018. © International Scholars Journals
Full Length Research Paper
A study of antioxidant and antimicrobial activities of polyphenols against pathogenic bacteria
Damintoti Karou1, Mamoudou H. Dicko1, 2*, Jacques Simpore3, and Alfred S. Traore1
1Université de Ouagadougou, UFR-SVT, CRSBAN, Laboratoire de Biochimie, 03 BP 7131 Ouagadougou 03, Burkina Faso.
2Wageningen University, AVT, Laboratory for Biochemistry, Dreijenlaan 3, 6703 HA, Wageningen, P.O Box 8128, 6700 ET Wageningen, Netherlands.
3Laboratoire de Biologie Médicale saint Camille de Ouagadougou, 01 BP 364 Ouagadougou 01, Burkina Faso.
*Corresponding Author E-Mail: Tel: +226 70 272643, Fax: +22650 33 73 73, E-mail: [email protected].
Accepted 06 July, 2017
Abstract
Polyphenols from four medicinal plants of Burkina Faso, Combretum micranthum, Khaya senegalensis, Pterocarpus erinaceus and Sida acuta, were screened for their antioxidant and antimicrobial activities against pathogenic bacteria. The medicinal plants displayed different polyphenols contents and antioxidant activities. The bark of P. erinaceus had the highest antioxidant activity. Some microorganisms were susceptible to polyphenol extracts with minimal bactericidal concentration values between 20 and 2000 mg/ml while other microorganisms appeared to be resistant to the extracts. Microbicide and microbiostatic activities of the extracts were dependent on the type of strains. Results suggest that these plants are not only interesting sources for antimicrobial activities but also potential sources of phenolic antioxidants.
Key words: Antioxidants, polyphenols, antimicrobials, medicinal plants.