Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.)
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...
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2008
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v125_n2_p153_Pappier http://hdl.handle.net/20.500.12110/paper_01681605_v125_n2_p153_Pappier |
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paper:paper_01681605_v125_n2_p153_Pappier2023-06-08T15:17:15Z Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.) 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 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. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v125_n2_p153_Pappier http://hdl.handle.net/20.500.12110/paper_01681605_v125_n2_p153_Pappier |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.) |
| topic_facet |
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 |
| description |
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. |
| title |
Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.) |
| title_short |
Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.) |
| title_full |
Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.) |
| title_fullStr |
Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.) |
| title_full_unstemmed |
Effect of processing for saponin removal on fungal contamination of quinoa seeds (Chenopodium quinoa Willd.) |
| title_sort |
effect of processing for saponin removal on fungal contamination of quinoa seeds (chenopodium quinoa willd.) |
| publishDate |
2008 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v125_n2_p153_Pappier http://hdl.handle.net/20.500.12110/paper_01681605_v125_n2_p153_Pappier |
| _version_ |
1768542934645342208 |