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Applied and Environmental Microbiology, October 2001, p. 4858-4862, Vol. 67, No. 10
Laboratorio de Higiene e Inspección de
Alimentos, Departamento de Química Analítica,
Nutrición y Bromatología, Facultad de Veterinaria,
Universidad de Santiago de Compostela, 27002 Lugo,1 and Departamento de
Producción Animal y Ciencia de los Alimentos, Facultad de
Ciencias Experimentales y de la Salud: Veterinaria, Universidad
Cardenal Herrera-CEU, 46113 Moncada, Valencia,2
Spain
Received 7 February 2001/Accepted 16 July 2001
A new reliable, fast, and simple method for the detection of
aflatoxigenic Aspergillus strains, consisting of the
addition of a cyclodextrin (a methylated
0099-2240/01/$04.00+0 DOI: 10.1128/AEM.67.10.4858-4862.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
New Additive for Culture Media for Rapid
Identification of Aflatoxin-Producing
Aspergillus Strains
-cyclodextrin derivative)
to common media used for testing mycotoxin production ability, was developed. We propose the use of this compound as an additive for
fungal culture media to enhance the natural fluorescence of aflatoxins.
The production of aflatoxins coincided with the presence of a bright
blue or blue-green fluorescent area surrounding colonies when observed
under long-wavelength (365-nm) UV light after 3 days of incubation at
28°C. The presence of aflatoxins was confirmed by extracting the
medium with chloroform and examining the extracts by high-pressure
liquid chromatography with fluorescence detection.
*
Corresponding author. Mailing address: Laboratorio de
Higiene e Inspección de Alimentos, Dpto. Química
Analítica, Nutrición y Bromatología, Facultad de
Veterinaria, Universidad de Santiago de Compostela, 27002-Lugo, Spain.
Phone and fax: 34-982254592. E-mail:
cfente{at}correo.lugo.usc.es.
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