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Antimicrobial activities of essential oils against common hospital Fungi species

Masia, Maria Dolores and Deidda, Silvia and Deriu, Grazia maria and Are, Bianca Maria and Chessa, Mario and Petretto, Giacomo Luigi and Foddai, Marzia and Maida, Giorgio and Pintore, Giorgio Antonio Mario and Piana, Andrea Fausto (2014) Antimicrobial activities of essential oils against common hospital Fungi species. Open Journal of Preventive Medicine, Vol. 4 , p. 801-807. ISSN 2162-2477. eISSN 2162-2485. Article.

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DOI: 10.4236/ojpm.2014.410090

Abstract

Introduction: In hospitals and other healthcare settings the presence of airborne and sedimented fungi is an extrinsic risk factor for opportunistic infections involving both immunocompromised and non-immunocompromised persons. In hospitalized patients, it is estimated that 9% of hospital-acquired infections are caused by fungi. Lethality rate varies from 40% to 100% depending on the immunosuppression degree of stakeholders. To prevent healthcare-associated infections, the control of environmental fungal contamination through use of sanitizing/disinfecting practices is basic. However, the widespread use of common disinfectants could promote the growth of antibiotic-resistant superbugs and cause environmental harm. These aspects stimulated the search of new antimicrobial agents. The aim of this study was to evaluate the antimicrobial activity of essential oils of Mentha insularis Req., Mentha pulegium L., Mentha requienii Bentham, Artemisia caerulescens L. ssp. densiflora (Viv), Rosmarinus officinalis L. var. albiflorus, Rosmarinus officinalis L. var. lavandulescens, and Ocotea puchury major Mart. against fungi species frequently found in hospitals and potentially responsible for opportunistic mycoses. Methods: The essential oils’ antifungal activity was carried out by agar disc diffusion technique. Results: All tested essential oils are effective, though to a different degree, against both molds that yeasts assessed. The major antifungal activity was showed by Mentha oils. Particularly, Mentha requienii and Mentha insularis oils were active until 1:8 dilution against Rhodotorula spp. and 1:16 dilution against mixed molds, while M. pulegium was strongly active until 1:2 against both fungi. Conclusions: To the best of our knowledge, few or no data are available in literature on the activity of essential oils against hospital environmental isolates of fungi. Results suggest their potential application in sanitation procedures of the hospital, and in general, of the “care settings”.

Item Type:Article
ID Code:10270
Status:Published
Refereed:Yes
Uncontrolled Keywords:Hospital environment, opportunistic mycoses, essential oils, antifungal activity
Subjects:Area 06 - Scienze mediche > MED/42 Igiene generale e applicata
Area 05 - Scienze biologiche > BIO/15 Biologia farmaceutica
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze Biomediche
001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:Scientific Research Publishing
ISSN:2162-2477
eISSN:2162-2485
Copyright Holders:© 2014 by authors and Scientific Research Publishing Inc.
Deposited On:06 Nov 2014 09:40

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