Antimicrobial activity of extracts from leaves - stems and flowers of Euphorbia macroclada against plant pathogenic fungi [Jordan]

Al-Mughrabi, K.I. . Dept. of Biotechnology

Antimicrobial activity of extracts from leaves - stems and flowers of Euphorbia macroclada against plant pathogenic fungi [Jordan]

2003

Al-Mughrabi, K.I. (Al Balqa Applied Univ., Al Salt (Jordan). Dept. of Biotechnology)

anglais. Extracts drawn from dried and powdered flowers, stems and leaves of Euphorbia macroclada with some organic solvents were tested for antimicrobial effect against the fungi Verticillium dahliae, Fusarium oxysporum, Rhizopus stolonifer, Penicillium italicum, Rhizoctonia solani, Alternaria solani, Stemphylium solani, Cladosporium sp., Mucor sp. and Pythium sp. The strongest inhibitory effect of the extracts was observed against R. solani, V. dahliae, F. oxysporum, Pythium sp. and R. stolonifer. The weakest effect was against A. solani. Extracts from the stems had a stronger inhibitory effect than those from the flowers or leaves. Butanol was the best solvent to extract antimicrobial compounds from leaves, stems and flowers and was superior to chloroform, water and petroleum ether. Results clearly indicate that E. macroclada is a promising source of antimicrobial compounds

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italien. [E' stato studiato l'effetto antimicrobico di estratti provenienti da fiori, fusti e foglie di Euphorbia macroclada essiccati e polverizzati nei confronti dei funghi Verticillium dahliae, Fusarium oxysporum, Rhizopus stolonifer, Penicillium italicum, Rhizoctonia solani, Alternaria solani, Stemphylium solani, Cladosporium sp., Mucor sp. e Pythium sp. L'effetto inibitorio piu' forte degli estratti e' stato osservato nei confronti di R. solani, V. dahliae, F. oxysporum, Pythium sp. e R. stolonifer. L'effetto piu' debole e' stato riscontrato contro A. solani. Gli estratti dei fusti avevano un effetto inibitorio piu' forte rispetto a quelli dei fiori o delle foglie. Il butanolo si e' rivelato il miglior solvente per estrarre composti antimicrobici da foglie, fusti e fiori ed e' risultato superiore a cloroformio, acqua ed etere di petrolio. I risultati indicano chiaramente che E. macroclada e' una fonte promettente di composti antimicrobici]

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