Floristic and Eco-Morphological Study of Antibacterial Plants in Phytotherapeutic Practice of Kasai Oriental in DR Congo

Abstract

Aims: To make an ethnobotanical survey in the province of Kasai Oriental to identify the plant species used in the treatment of bacterial diseases; carry out a floristic analysis and determine their eco-morphological characteristics. Study Design: The surveys were conducted in the villages of all the territories of the Kasai Oriental province in RD CONGO for five years and nine months, from March 2013 to December 2018. The confirmation of the identified species was made at the Laboratory of the ISP Mbujimayi and Herbarium of the ecology laboratory of the Department of Biology of the University of Kinshasa. Place and Duration of Study: The surveys were conducted in the villages of all the territories of the Kasai Oriental province in RD CONGO for five years and nine months, from March 2013 to December 2018. The confirmation of the identified species was made at the Laboratory of the ISP Mbujimayi and Herbarium of the ecology laboratory of the Department of Biology of the University of Kinshasa. Methodology: Pre-established questionnaires were submitted to healers and potential patients living in the region. Data were collected on local phytotherapeutic practices in order to identify indigenous plants used in the treatment of bacterial diseases. The plants listed have been identified and their eco-morphological characteristics were determined. Results: From examination of the responses of 391 traditional healers and 1,485 residents and potential patients questioned, one hundred and sixteen plant species reputed to be effective against bacteriosis were identified. They belong to 19 orders, 39 families and 87 genera. Among these plants, only 6 families (Fabaceae, Euphorbiaceae, Rubiaceae, Phyllanthaceae, Lamiaceae and Moraceae) provide 51.57% of the species used against bacterial pathologies i.e more than half. Woody plants (62.94%) predominate among the species used (27.59% of trees, 27.59% of shrubs). Wild savannah species (44.83%) and pantropical ones (32.76%) are the most numerous among the plants of Kasai Oriental which provide drugs against bacteriosis. Conclusion: The results confirm that several local plant species are commonly used to treat bacterial diseases in Kasai Oriental. Local herbalists use more phanerophyte plants from savannah and especially trees and shrubs.