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Control of Some Filamentous Fungi and Yeasts by Dehydrated Allium Extracts

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Abstract:

The antifungal activities of dehydrated garlic (Allium sativum L.), onion (Allium cepa L.) and leek (Allium porrum L.) against Aspergillus niger, Fusarium oxysporum, Candida albicans ATCC 10231 and Metschnikowia fructicola were investigated. Inhibition activities of the ethyl alcohol or acetone extracts of dehydrated Allium species were studied by disc-diffusion and broth dilution methods. The Minimum Inhibitory Concentration (MIC) and the Minimum Fungicidal Concentration (MFC) were found in the range of 75 and 100 mg/mL (w/v). Ethyl alcohol extracts of dehydrated onion (Allium cepa L.) in the range of 75 and 175 mg/mL were determined as the most inhibitory MIC and MFC for A. niger, F. oxysporum and C. albicans respectively. The extracts possess antifungal activity against some of the tested filamentous fungi and yeasts at various concentrations.

Zusammenfassung:

Es wurde die fungizide Wirkung dehydrierter Extrakte von Knoblauch (Allium sativum L.), Küchenzwiebel (Allium cepa L.) und Porree (Allium porrum L.) gegen Aspergillus niger, Fusarium oxysporum, Candida albicans ATCC 10231 und Metschnikowia fructicola untersucht. Die fungizide Wirkung der Äthanol- bzw. Aceton-Extrakte aus den genannten dehydrierten Allium-Spezies wurde mittels Disk-Diffusion-Test und spezieller Kultivierungsmethoden charakterisiert. Als “Minimum Inhibitory Concentration” (MIC) und “Minimum Fungicidal Concentration” (MFC) sind Werte im Bereich von 75 bis 100 mg/ml (w/v) zu betrachten. Äthanol-Extrakte aus dehydrierter A. cepa (75 bis 175 mg/mL) zeigten die höchsten MIC und MFC in Bezug auf A. niger, F. oxysporum bzw. C. albicans. Um die fungizide Wirkung der verwendeten Extrakte gegen die hier getesteten Pilze realisieren zu können, war es nötig, dem jeweiligen Einzelfall angespasste Konzentrationen einzusetzen.

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Correspondence to Reyhan Irkin.

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Received: July 8, 2008; accepted: July 30, 2008

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Irkin, R., Korukluoglu, M. Control of Some Filamentous Fungi and Yeasts by Dehydrated Allium Extracts. J. Verbr. Lebensm. 4, 3–6 (2009). https://doi.org/10.1007/s00003-009-0390-8

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  • DOI: https://doi.org/10.1007/s00003-009-0390-8

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