Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/22458
Tipo: Artigo
Título: Composition, antifungal activity and main fungitoxic components of the essential oil of Mentha piperita L.
Autor(es): Freire, Marcelo Moreira
Jham, Gulab Newandram
Dhingra, Onkar Dev
Jardim, Carolina Marangon
Barcelos, Rosimeire Coura
Valente, Vânia Maria Moreira
Abstract: Twenty-one components (93.9% of the total chromatographic peak area) were tentatively identified in the essential oil (EO) of Mentha piperita L., based on Kováts retention indices (RIs), a mass spectral database (gas chromatography-mass spectrometry, GC-MS) and visual comparison of the mass spectra of the sample peaks with those of the database. The presence of 15 compounds (corresponding to 90.7% of the total chromatographic peak area) was confirmed by authentic standards. The EO presented a good activity against the following important postharvest deteriorating fungi: Aspergillus flavus, Aspergillus glaucus, Aspergillus niger, Aspergillus ochraceous, Colletotrichum gloesporioides, Colletotrichum musae, Fusarium oxysporum and Fusarium semitectum. At a concentration of 0.2% of the EO, all the fungi were completely inhibited, except for A. glaucus and C. musae which were inhibited 90 and 98%, respectively. TLC-bioautography yielded three subfractions that prevented fungal growth, suggesting the presence of antifungals. Bioassay data of the crude EO were compared with those of the three subfractions. Based on these tests, it was concluded that several fungitoxics were responsible for the antifungal activity of M. piperita, with the principal ones being menthone, neomenthol, menthol and carvone. However, participation of other compounds cannot beruled out. This is the first study in the literature that presents data on the activity of the crude EO against eight important postharvest deteriorating fungi, characterizing the amounts and types of comounds. In addition, also for the first time, the active fractions of the crude EO were isolated, identified and the components quantified. More detailed fungal tests are being conducted to confirm the tentative preliminary antifungal data.
Palavras-chave: Antifungal activity
Fungitoxic
Mentha piperita L.
Editor: Journal of Food Safety
Tipo de Acesso: Open Access
URI: https://doi.org/10.1111/j.1745-4565.2011.00341.x
http://www.locus.ufv.br/handle/123456789/22458
Data do documento: 11-Dez-2011
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