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Abstract:

Incidence of fungal contamination of quinoa seeds from three locations (Salar de Uyuni, Bolivia; Salta and Tucumán provinces, Argentina) was analyzed in samples with and without treatment to remove saponins (wet method). In processed samples, the percentage of infection was reduced. Distribution of the different fungal genera was not homogeneous in the three locations (p < 0.05), although Penicillium and Aspergillus were the most prevalent contaminants, regardless the geographic origin of the samples. Other genera, such as Eurotium, Fusarium, Phoma, Ulocladium, Mucor and Rhizopus were less frequently isolated. Absidia, Alternaria, Cladosporium, Dreschlera, Epicoccum and Monascus were sporadically encountered. Significant differences (p < 0.05) in the distribution of fungal genera in samples with and without saponins from each location were observed. In all cases, processing caused a decrease of Aspergillus incidence, while increased the proportion of Penicillium, Eurotium, Mucor and Rhizopus indicating that these genera were part of the internal mycota. A. flavus and A. niger were the dominating species of genus Aspergillus. A similar pattern of prevalent Penicillium species was observed in samples with and without saponins, since P. aurantiogriseum, P.chrysogenum, P. citrinum and P. crustosum were always present in high number, although their relative density was variable according to the geographic origin of samples. Mycotoxin-producing ability of most representative species was also determined. Toxigenic strains of A. flavus (aflatoxins and cyclopiazonic acid), A. parasiticus (aflatoxins), P. citrinum (citrinin) and P. griseofulvum (cyclopiazonic acid) were found. None of the A. niger isolates was ochratoxin A producer. The above mentioned mycotoxins were not detected in the samples analyzed. © 2008 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.)
Autor:Pappier, U.; Fernández Pinto, V.; Larumbe, G.; Vaamonde, G.
Filiación:Laboratorio de Microbiología de Alimentos, Departamento de Química Orgánica, Area Química y Microbiología de Alimentos, Ciudad Universitaria, (1428) Buenos Aires, Argentina
Palabras clave:Mycota; Quinoa; Saponins; Toxigenic fungi; aflatoxin; citrinin; cyclopiazonic acid; mycotoxin; saponin; Absidia; Alternaria; Argentina; article; Aspergillus; Chenopodium quinoa; Cladosporium; fungal contamination; Fusarium; incidence; Monascus; Mucor; nonhuman; Penicillium; plant seed; Rhizopus; Absidia; Alternaria; Aspergillus; Aspergillus flavus; Aspergillus niger; Aspergillus parasiticus; Chenopodium quinoa; Cladosporium; Dreschlera; Epicoccum; Eurotium; Fungi; Fusarium; Monascus; Mucor; Mycota; Penicillium; Penicillium aurantiogriseum; Penicillium citrinum; Penicillium crustosum; Penicillium griseofulvum; Phoma; Rhizopus; Ulocladium
Año:2008
Volumen:125
Número:2
Página de inicio:153
Página de fin:157
DOI: http://dx.doi.org/10.1016/j.ijfoodmicro.2008.03.039
Título revista:International Journal of Food Microbiology
Título revista abreviado:Int. J. Food Microbiol.
ISSN:01681605
CODEN:IJFMD
CAS:aflatoxin, 1402-68-2; citrinin, 11118-72-2, 518-75-2; cyclopiazonic acid, 18172-33-3, 83136-88-3; saponin, 8047-15-2
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v125_n2_p153_Pappier

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Citas:

---------- APA ----------
Pappier, U., Fernández Pinto, V., Larumbe, G. & Vaamonde, G. (2008) . Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.). International Journal of Food Microbiology, 125(2), 153-157.
http://dx.doi.org/10.1016/j.ijfoodmicro.2008.03.039
---------- CHICAGO ----------
Pappier, U., Fernández Pinto, V., Larumbe, G., Vaamonde, G. "Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.)" . International Journal of Food Microbiology 125, no. 2 (2008) : 153-157.
http://dx.doi.org/10.1016/j.ijfoodmicro.2008.03.039
---------- MLA ----------
Pappier, U., Fernández Pinto, V., Larumbe, G., Vaamonde, G. "Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.)" . International Journal of Food Microbiology, vol. 125, no. 2, 2008, pp. 153-157.
http://dx.doi.org/10.1016/j.ijfoodmicro.2008.03.039
---------- VANCOUVER ----------
Pappier, U., Fernández Pinto, V., Larumbe, G., Vaamonde, G. Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.). Int. J. Food Microbiol. 2008;125(2):153-157.
http://dx.doi.org/10.1016/j.ijfoodmicro.2008.03.039