Abstract
ObjectiveTo evaluate the phytochemical, antimicrobial and insecticidal properties of different Jatropha species and Ricinus communis (castor) (R. communis) growing in Mauritius. MethodsQualitative and quantitative methods were used for the determination of the presence of phytochemicals in the crude plants solvent extracts. The antimicrobial sensitivity (disc diffusion method) and Antibacterial activity (MIC-microdilution method) of 13 microorganisms were studied. The insecticidal properties of the crude solvent extracts against larvae of two insects, Bactrocera zonata and Bactrocera cucurbitae (Diptera, Tephritidae), which cause important economic losses to local fruits were also demonstrated. ResultsEthyl acetate was proved to be a good solvent for extraction. Jatropha multifida showed very interesting activity against Bacillus algicola and Staphylococcus epidermis. Both R. communis and Jatropha multifida were proved to be very effective as biopesticide against different types of insect larvae. ConclusionsThis study was able to demonstrate that Jatropha species as well as R. communis growing in Mauritius possess antimicrobial, phytochemical and insecticidal properties.
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