Antifungal activity of pyranonaphthoquinones obtained from Cipura paludosa bulbs
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Date
2015-09-01
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Publisher
SAGE
Abstract
Description
Previous studies with the bulbs of Cipura paludosa (Iridaceae) showed the presence of pyranonaphthoquinones, including eleutherine, isoeleutherine and
eleutherol. The aim of this study was to evaluate the antifungal properties of these compounds. The activity was tested against the clinically relevant yeasts
Candida albicans, C. tropicalis, Saccharomyces cerevisiae and Cryptococcus neoformans with the microbroth dilution method, following the guidelines of
CLSI. Eleutherine, isoeleutherine and eleutherol all presented significant antifungal activity, especially the first two, the major components, with MIC values
between 7.8 and 250 µg/mL. In conclusion, these results demonstrate that C. paludosa bulbs produce active principles with relevant antifungal potential,
contributing, at least in part, to the antimicrobial effect evidenced for this plant and justifying its popular use against infections.
Keywords
Cipura paludosa, Antifungal Activity, Pyranonaphthoquinones