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International Journal of Medicinal Mushrooms
Fator do impacto: 1.423 FI de cinco anos: 1.525 SJR: 0.431 SNIP: 0.716 CiteScore™: 2.6

ISSN Imprimir: 1521-9437
ISSN On-line: 1940-4344

Volumes:
Volume 22, 2020 Volume 21, 2019 Volume 20, 2018 Volume 19, 2017 Volume 18, 2016 Volume 17, 2015 Volume 16, 2014 Volume 15, 2013 Volume 14, 2012 Volume 13, 2011 Volume 12, 2010 Volume 11, 2009 Volume 10, 2008 Volume 9, 2007 Volume 8, 2006 Volume 7, 2005 Volume 6, 2004 Volume 5, 2003 Volume 4, 2002 Volume 3, 2001 Volume 2, 2000 Volume 1, 1999

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v5.i1.40
6 pages

A Case for Caution in Assessing the Antibiotic Activity of Extracts of Culinary-Medicinal Shiitake Mushroom [Lentinus edodes (Berk.) Singer] (Agaricomycetideae)

Stefan Bender
Environment and Biotechnology Centre,Swinburne University of Technology,
Cristina N. Dumitrache-Anghel
Environment and Biotechnology Centrer,Centre for Applied Colloid and BioColloid Science, Swinburne University of Technology, John Street, Hawthorn, Melbourne, Australia; Present address: Novo Nordisk A/S, Novo Alle, DK-2800, Bagsvaerd, Copenhagen, Denmark
Juergen Backhaus
Fachhochschule Mannheim, Institute for Instrumental Analysis, Mannheim University of Applied Sciences, Germany
Gregor Christie
Environment and Biotechnology Centre, Swinburne University of Technology, John Street, Hawthorn, Melbourne 3122, Australia
Reg F. Cross
Centre for Applied Colloid and BioColloid Science, School of Engineering and Science, Swinburne University of Technology,
Greg T. Lonergan
Environment and Biotechnology Centre; Centre for Applied Colloid and BioColloid Science, School of Engineering and Science, Swinburne University of Technology,
Warren L. Baker
Environment and Biotechnology Centre, Centre for Applied Colloid and BioColloid Science, School of Engineering and Science, Swinburne University of Technology,

RESUMO

Antimicrobial activity against Staphylococcus aureus was detected when edible and medicinal mushroom Lentinus edodes was grown in malt extract broth. The broth was subjected to anion-exchange chromatography. A solution of the dried eluate from the anion-exchange column showed a peak in the same position as pure oxalic aid when subjected to ion-pair chromatography. Treatment of pure oxalic acid and the dried eluate with diazomethane, followed by gas chromatography and mass spectrometry, gave several peaks, but a peak at retention time 4.8 min showed all the characteristics of dimethyl oxalate. It was concluded that oxalic acid was one agent responsible for the antimicrobial effect and oxalic acid was shown to exert such an effect against several other organisms.


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