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| Baptista,Antonio Sampaio; Horii,Jorge; Calori-Domingues,Maria Antonia; Glória,Eduardo Micotti da; Salgado,Jocelem Mastrodi; Vizioli,Mário Roberto. |
| Aflatoxins are hepatotoxic metabolites produced by Aspergillus flavus and A. parasiticus on a number of agricultural commodities. This research was carried out to evaluate the ability of thermolysed and active Saccharomyces cerevisiae to attenuate liver damage caused by aflatoxin. Diets were prepared containing 0 aflatoxin; 400 mug kg-1 aflatoxin; 400 mug kg-1 aflatoxin plus 1% of dehydrated active yeast, and 400 mug kg-1 aflatoxin plus 1% of thermolysed yeast. A bioassay with Wistar rats was conducted for 28 days, and body organs were weighted and analyses of the liver tissue of the animals were performed. The relative weight of heart, kidneys and liver from animals submitted to the different treatments did not show any difference, and liver tissue of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharomyces cerevisiae; Aflatoxicosis; Bioremediation; Mycotoxins; Natural contamination. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000200008 |
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| Zovico,Cristiane; Fonseca,Homero; Calori-Domingues,Maria Antonia; Glória,Eduardo Micotti; Borguini,Renata Galhardo; Silveira,Vanessa Prezzotto; Piedade,Sônia S.. |
| Quarenta e dois lotes comerciais de 300 kg de amendoim descascado, produzidos em 1997 e contaminados com aflatoxinas, foram submetidos à seleção eletrônica pela cor para verificar a eficiência desse processo na melhoria da qualidade de lotes de amendoim quanto à diminuição da contaminação com aflatoxinas. Os lotes de amendoim foram classificados pelo tamanho como normalmente utilizados pela cerealista, sendo 22 lotes de amendoim graúdo (7,5 a 7,9mm) e 20 lotes de amendoim miúdo (6,4 a 7,1mm), nos quais os níveis de contaminação inicial variaram de 7 a 3.763 mg/kg e de 76 a 3.309 mg/kg, respectivamente. Nos 42 lotes, não foram detectadas aflatoxinas em dois lotes de amendoim graúdo e 1 de amendoim miúdo. Este trabalho demonstrou que o processo de seleção... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxina; Amendoim; Seleção eletrônica. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000200016 |
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| Piedade,Fabiana Segatti; Fonseca,Homero; Gloria,Eduardo Micotti da; Calori-Domingues,Maria Antonia; Piedade,Sônia Maria Stefano; Barbin,Décio. |
| The aflatoxin distribution in corn fractions obtained after visual segregation for defects in 30 samples, known to be contaminated, was studied. Each sample was passed through a 5.0 mm round holes sieve, graded for defects and then segregated in sound kernels (regular kernels) and non-sound kernels (injured, germinated, fermented, moldy, heated, insect damaged, immature, broken, hollow, fermented up to ¼, discolored, extraneous materials, and injured by other causes), as defined by the Brazilian Official Grading rules for corn. The non-sound kernels showed the highest contamination levels in all samples. The contamination levels of non-sound kernels (20% of total weight) ranged from 23 to 1,365 µg/kg of aflatoxins (B1, B2, G1 and G2) and were higher than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxins; Corn; Contamination distribution; Visual segregation; Fraction. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300013 |
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