In vitro antimicrobial activity of different accessions ofSolanum commersonii Dun. from Uruguay |
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| Authors: | M I Siri P Villanueva M J Pianzzola L Franco Fraguas G Galván M Acosta F Ferreira |
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| Institution: | (1) Facultad de Química, Cátedra de Microbiología, Uruguay;(2) Departamento Química Orgńica, Facultad de Química, Laboratorio de Carbohidratos y Glicoconjugados, Uruguay;(3) Facultad de Química, Cátedra de Bioquímica, CC 1157 Montevideo, Uruguay;(4) Facultad de Agronomía, Departamento de Producción Vegetal, Montevideo, Uruguay |
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| Abstract: | Summary The in vitro antimicrobial activity of extracts from accessions ofSolanum commersonii Dun. collected in the south of Uruguay was investigated against five microorganisms including the pathogenRalstonia solanacearum. A total of 30 extracts corresponding to organic and aqueous extracts were studied. Interestingly, most of the positive results
for growth inhibition were againstR. solanacearum. The extracts were also analyzed for the presence of glycoalkaloids and lectins. Six of the ten aqueous extracts showed lectin
presence and a wide variation in the type and amounts of glycoalkaloids, was found. Results indicate that there is no clear
relationship between the antimicrobial activity against the five microorganisms screened and the presence or amounts of lectins
and glycoalkaloids, traditionally regarded as possible antimicrobial metabolites in theSolanum genus, which indicates the presence of as yet unidentified antimicrobial compounds. |
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| Keywords: | Solanum commersonii Ralstonia solanacearum Staphylococcus aureus Escherichia coli Candida albicans Penicillium expansum glycoalkaloids lectins |
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