Estadística básica en administración : conceptos y aplicaciones / Mark L. Berenson, David M. Levine
SERBIULA (sistema Librum 2.0)
Traducción de: Basic business statistics concepts and applications Incluye índice
Available from: onlinelibrary.wiley.com
[Show abstract] [Hide abstract]
ABSTRACT: The aims of this work were to evaluate the mycoflora and to identify the species of Aspergillus with the potential to produce ochratoxin A (OA) from different wine grape varieties from Mendoza, Argentina. Likewise, the capacity to produce OA by Aspergillus section Nigri was studied.
Fifty samples of wine grapes were obtained from a winery of Mendoza province, Argentina. The surface-disinfection method was used for mycoflora determination using the medium dichloran 18% glycerol agar (DG18). Alternaria, Aspergillus and Penicillium were identified at species level. OA production was tested in 63 strains belonging to section Nigri. Alternaria genus was the most frequent (80% of the samples) followed by Aspergillus (70%). Alternaria alternata was the only specie identified from the Alternaria genus, followed by A. niger var. niger, A. flavus among others. From Penicillium genus, P. crysogenum was the most frequent specie. From 63 strains of Aspergillus section Nigri, 41.3% were OA producers. The levels of produced toxin ranged from 2 to 24.5 ng ml-1 of culture medium.
The presence of ochratoxigenic strains of Nigri section in this substrate suggests that they may be an important source of OA in grapes from tropical and subtropical zones. Therefore, the industry should work further to diminish the growth of these fungi and mycotoxins formation in grapes, with the aim to reduce OA content in wine products.
The wine grape contamination with A. alternata and Aspergillus section Nigri was significant.
Letters in Applied Microbiology 02/2003; 37(2):179-84. DOI:10.1046/j.1472-765X.2003.01376.x · 1.66 Impact Factor
Available from: scielo.cl
Archivos de Medicina Veterinaria 12/2013; 46(2):207-2016. DOI:10.4067/S0301-732X2014000200006 · 0.31 Impact Factor
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.