Mycotoxins
Mostrando 25-36 de 229 artigos, teses e dissertações.
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25. Occurrence of toxigenic Aspergillus flavus in commercial Bulgur wheat
Abstract Aflatoxins are mutagenic, carcinogenic, and teratogenic mycotoxins. The objective of this work was to study the presence of aflatoxigenic Aspergillus in commercial Bulgur wheat in the city of Maringá, Paraná, Brazil. Thirty samples of commercial Bulgur wheat, acquired in the period of August 2011 to January 2012, were evaluated. The enumeration an
Food Sci. Technol. Publicado em: 19/01/2017
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26. Deoxynivalenol in wheat and wheat products from a harvest affected by fusarium head blight
Abstract Fusarium head blight is an important disease occurring in wheat, caused mainly by the fungus Fusarium graminearum. In addition to direct damage to crops, reduced quality and yield losses, the infected grains can accumulate mycotoxins (toxic metabolites originating from prior fungal growth), especially deoxynivalenol (DON). Wheat crops harvested in 2
Food Sci. Technol. Publicado em: 12/01/2017
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27. Fusarium and Aspergillus mycotoxins contaminating wheat silage for dairy cattle feeding in Uruguay
Abstract Wheat is one of the most important cultivated cereals in Uruguay for human consumption; however, when harvest yields are low, wheat is usually used in ensiling for animal feeding. Ensiling is a forage preservation method that allows for storage during extended periods of time while maintaining nutritional values comparable to fresh pastures. Silage
Braz. J. Microbiol.. Publicado em: 2016-12
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28. Meta-analysis of individual and combined effects of mycotoxins on growing pigs
ABSTRACT Little is known about the toxicity of concomitantly occurring mycotoxins in pig diets. This study was conducted to evaluate, through meta-analysis, the individual and the combined effects of mycotoxins on pig performance. The meta-analysis followed three sequential analyses (graphical, correlation, and variance-covariance) based on a database compos
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-08
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29. New Dereplication Method Applied to NMR-Based Metabolomics on Different Fusarium Species Isolated from Rhizosphere of Senna spectabilis
The search for new sources of natural products steadily increased the use of bioinformatic tools that enabled efficient analysis of complex matrices. In this context, dereplication methods emerged as a fast way of identifying known compounds, accelerating the identification of bioactive chemotypes. Although 1H NMR is widely used as an analytical technique, f
J. Braz. Chem. Soc.. Publicado em: 2016-08
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30. Rapid Detection of ACTG- and AK-Toxins in Alternaria alternata by LC-ESI-MS/MS Analysis and Antifungal Properties of Citrus Compounds
A methanol-soluble fraction of the dichloromethane extract from the culture broth of A. alternata AT4303 strain afforded the following five known mycotoxins: alternariol, alternariol monomethyl ether, altenusin, altenuene and altertoxin I. A hexane-soluble fraction of the dichloromethane extract yielded the steroids ergosterol and ergosterol peroxide, and al
J. Braz. Chem. Soc.. Publicado em: 2016-08
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31. Micotoxinas en harinas derivadas de trigo y soja detectadas por prueba de Elisa
Abstract: The objective of this work was to evaluate the presence of mycotoxins in flours derived from wheat caryopses and soybean seed exposed to Fusarium graminearum infection and detected by the Elisa test. Contamination was evaluated during 2010 and 2012, in greenhouse conditions, by artificial inoculation, and on field-production batches exposed to natu
Pesq. agropec. bras.. Publicado em: 2016-05
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32. Effects of mycotoxin adsorbents in aflatoxin B 1 - and fumonisin B 1 -contaminated broiler diet on performance and blood metabolite
ABSTRACT The present study examined the effect of aflatoxin (AFB1) and fumonisin (FB1) at the levels of 2 mg kg−1 AFB1 and 100 mg kg−1 FB1 and the efficiency of use of different levels of adsorbent based on sodium and calcium aluminosilicate on growth performance, hematological parameters, and biochemical parameters of broilers. A total of 1,440 Cobb bro
R. Bras. Zootec.. Publicado em: 2016-05
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33. Antifungal and antimycotoxigenic activity of essential oils from Eucalyptus globulus, Thymus capitatus and Schinus molle
Abstract Essential oils (EO) of eucalyptus (Eucalyptus globulus L.), thymus (Thymus capitatus L.) pirul (Schinus molle L.) were evaluated for their efficacy to control Aspergillus parasiticus and Fusarium moniliforme growth and their ability to produce mycotoxins. Data from kinetics radial growth was used to obtain the half maximal inhibitory concentration (
Food Sci. Technol. Publicado em: 2015-12
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34. Production technology and quality of corn silage for feeding dairy cattle in Southern Brazil
ABSTRACTThe objective of this study was to evaluate the production practices and use of corn silage in dairy farms in Southern Brazil, and to evaluate their impact on the nutritional quality and occurrence of mycotoxins. The data were collected by application of questionnaires among the producers, and by analysis of silage samples. The variables were subject
R. Bras. Zootec.. Publicado em: 2015-09
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35. Can Ergosterol Be an Indicator of Fusarium Fungi and Mycotoxins in Cereal Products?
Presence of fungi in food and feed products is a major problem. Fungi synthesize a large number of secondary metabolites including particularly harmful mycotoxins. They can be produced in plant tissues and are commonly found all over the world in many products including cereals. A total of 44 samples were taken for identification of ergosterol - the potentia
J. Braz. Chem. Soc.. Publicado em: 2015-04
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36. Methods to preserve potentially toxigenic fungi
Microorganisms are a source of many high-value compounds which are useful to every living being, such as humans, plants and animals. Since the process of isolating and improving a microorganism can be lengthy and expensive, preserving the obtained characteristic is of paramount importance, so the process does not need to be repeated. Fungi are eukaryotic, ac
Braz. J. Microbiol.. Publicado em: 2014