INVESTIGADORES
ZAMPINI iris Catiana
congresos y reuniones científicas
Título:
Sensitivity of environmental fungi to extracts of the genus Baccharis.
Autor/es:
CARRIZO S.L.; ZAMPINI C.; ISLA M.I.; VAN GELDEREN A.
Lugar:
Tafí del Valle -Tucumán- Argentina
Reunión:
Jornada; XXVIII ANNUAL SCIENTIFIC MEETING OF TUCUMAN BIOLOGY ASSOCIATION; 2011
Institución organizadora:
Sociedad de Biología Tucumán
Resumen:
The interest in finding biologically active molecules against fungi
is on the increase, not only because of their usefulness in the treatment
of diseases but also to control their proliferation. Vegetables
are an important source of antimicrobial agents. The species
Baccharis boliviensis (Bb) and Baccharis tola (Bt), which grow in
the Puna Argentina in extreme environments, could be a source of
metabolites of antifungal action. The present work determines the
antifungal effect of both plant species against environmental fungi
belonging to different genera. Ethanol extracts (3.200 mg/ml of
phenolic compounds) and 2 μl of spore suspension (5x103 spores/
ml) were used. The values of fungal growth were converted to their
equivalent in inhibition percentage (%). Subsequently, we determined
the Minimum Inhibitory Concentration (MIC) of the extracts
(100-3200 μg/ml of phenolic compounds) and 2 μl of each (5x103
spores/ml) spore suspension. Scopulariopsis brevicaulis was most
sensitive, showing 100% inhibition with Bb and lower with Bt.
Similar results were obtained with Alternaria sp. Absidia showed
strong inhibition. The remaining strains had lower sensitivity. The
extracts had MIC values between 1600 and >3200 mg/ml. The results
show that both extracts might be used 6 as antifungals against
environmental fungi..