Fumonisin B1
Mostrando 13-24 de 72 artigos, teses e dissertações.
-
13. Avaliação da presença de fungos e micotoxinas na tecnologia de pós-colheita do milho
Corn is an important cereal crop in Brazil as a major ingredient of animal feed and as raw material included in more than 500 cereal based products. Nevertheless, due to its nutritional quality it becomes an excellent substratum for the toxigenic fungi contamination. In order to evaluate the effect of the time interval between the harvesting and the pre-dryi
Publicado em: 2007
-
14. Análises micológicas e micotoxicológicas em rações de frangos de corte no município de São José do Vale do Rio Preto-RJ. / Mycological and mycotoxicological survey in poultry feeds from São José do Vale do Rio Preto-RJ.
A ingestão de rações contaminadas por micotoxinas pode acarretar perdas no seu valor nutritivo e causar efeitos adversos à saúde animal e à produtividade. Os objetivos desse estudo foram: 1)estabelecer a freqüência e a prevalência da micobiota presente em amostras de rações de frangos de corte provenientes de três fábricas em São José do Vale
Publicado em: 2006
-
15. Mycotoxins in nationals foods and beverages produced and commercialized in severals Brazilian regions. / Micotoxinas em alimentos e bebidas nacionais produzidos e comercializados em diferentes regiões do Brasil.
Mycotoxins are secondary fungi metabolites with toxic effects for humans and animals. They are of great importance for the public health and the economy of a country. In Brazil, mycotoxins have been the object of research mainly in the center south region and more recently in the southern region of the country. There is a lack of information about foods cons
Publicado em: 2004
-
16. Efeitos da fumonisina B1 em codornas poedeiras (Coturnix coturnix japonica) / Fumonisin B1 effects on laying japanese quail (Coturnix coturnix japonica)
A 28-d experiment was conducted to evaluate the effect of fumonisin B1 (FB1) on egg production and egg quality of young laying Japanese quail fed contaminated rations. To this end, 128 7-wk-old birds were randomly distributed into four experimental groups (32 birds per group) and given rations containing 0 (controls), 10, 50 and 250 mg FB1/ kg feed. Each tre
Publicado em: 2003
-
17. Efeitos da exposição prolongada de aflatoxina B1 e fumonisina B1 em codornas: avaliação de parâmetros de desempenho e de qualidade dos ovos / Effects of prolonged intoxication of aflatoxin B1 and fumonisin B1 in laying Japanese quail: evaluation of productivity and egg quality
This study evaluated the individual and combined effects of aflatoxin B1 (AFB1) and fumonisin B1 (FB1) on egg quality and performance of laying Japanese quail (Coturnix coturnix japonica). Two hundred twenty-eight birds were purchased at 8 week of age and randomly distributed into 6 experimental groups and given rations containing AFB1 and FB1 at the followi
Publicado em: 2003
-
18. Anti-Fusarium moniliforme activity and fumonisin biodegradation by corn and silage microflora
Studies were carried out to isolate microorganisms from corn and silage screened for their ability to inhibit F. moniliforme growth (strain 113F) in association with fumonisin detoxification. Among 150 isolates four Gram-positive bacilli and one yeast with inhibitory activity were selected. The inhibition zone ranged from 50 to 72.5 mm using cultures, and fr
Brazilian Archives of Biology and Technology. Publicado em: 2000
-
19. Fumonisinas em produtos e em variedades de milho argentinos
Com, or maize (Zea mays L.), is the world third leading cereal crop, after wheat and rice. The United States produces nearly 40% of the total world production. The next largest comproducing countries are the People s Republic of China and Brazil. Argentinean com accounts for 2 percent of the total world production. In Argentina com occupies a third of the cu
Publicado em: 1998
-
20. Generation of antibodies reactive with fumonisins B1, B2, and B3 by using cholera toxin as the carrier-adjuvant.
Murine polyclonal antibodies reactive with fumonisins B1, B2, and B3 were produced after a novel immunization procedure with cholera toxin as both a hapten carrier protein and adjuvant. Immunization of mice with two 7.5-micrograms doses of fumonisin B1-cholera toxin conjugate without adjuvant resulted in the production of fumonisin B1-specific antibodies in
-
21. Fate of Fumonisin B1 in Naturally Contaminated Corn during Ethanol Fermentation
Two lots of corn naturally contaminated with fumonisin B1 (15 and 36 ppm) and a control lot (no fumonisin B1 detected) were used as substrates for ethanol production in replicate 8.5-liter yeast fermentations. Ethanol yields were 8.8% for both the control and low-fumonisin corn, while the high-fumonisin corn contained less starch and produced 7.2% ethanol. L
-
22. Production of fumonisin B1 by Fusarium moniliforme NRRL 13616 in submerged culture.
Fumonisin B1, a recently discovered mycotoxin, was synthesized by submerged cultures of Fusarium moniliforme NRRL 13616 grown for 29 days at 28 degrees C and 220 rpm in a basal salts medium (pH 5.0) supplemented with 90 g of glucose per liter and 3.5 g of ammonium sulfate per liter. Under these culture conditions, 74 +/- 23 micrograms of fumonisin B1 per ml
-
23. Fumonisin B1 production by Fusarium species other than F. moniliforme in section Liseola and by some related species.
Strains of Fusarium proliferatum, F. subglutinans, F. anthophilum, F. annulatum, F. succisae, F. beomiforme, F. dlamini, F. napiforme, and F. nygamai from a variety of substrates and geographic areas were tested for the production of fumonisin B1 in culture. None of the cultures of F. subglutinans (0 of 23), F. annulatum (0 of 1), F. succisae (0 of 2), or F.
-
24. Influence of Kernel Age on Fumonisin B1 Production in Maize by Fusarium moniliforme
Production of fumonisins by Fusarium moniliforme on naturally infected maize ears is an important food safety concern due to the toxic nature of this class of mycotoxins. Assessing the potential risk of fumonisin production in developing maize ears prior to harvest requires an understanding of the regulation of toxin biosynthesis during kernel maturation. We
American Society for Microbiology.