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Navegando por Autor "Baraj, Edlira"

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    Effect of deoxynivalenol and T-2 toxin in malt amylase activity
    (2010) Buffon, Jaqueline Garda; Baraj, Edlira; Furlong, Eliana Badiale
    The objective of this work was to evaluate the effect of DON and T-2 toxin levels on the malt amylase activity. The malt was contaminated in accordance with central composite design experiment with DON and T-2 toxin levels until 1000 ng/g. The activities of the enzymes were evaluated by Bernfeld method. The increase in T-2 toxin concentration inhibited the a-amylase activity. However, the increase of both toxins concentration caused inverse effect. The interaction between toxins indicated synergetic effect on the b-amylase activity. An increased activity occurred when the toxins contamination levels in malt were higher (1000ng/g malt). The trichothecenes interfered with the performance of aminolitic enzymes in the stage of malting, resulting in a significant model for enzymatic activity of b-amylase.
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    Effect of Deoxynivalenol and T-2 Toxin in Malt Amylase Activity
    (2010) Buffon, Jaqueline Garda; Baraj, Edlira; Furlong, Eliana Badiale
    The objective of this work was to evaluate the effect of DON and T-2 toxin levels on the malt amylase activity. The malt was contaminated in accordance with central composite design experiment with DON and T-2 toxin levels until 1000 ng/g. The activities of the enzymes were evaluated by Bernfeld method. The increase in T-2 toxin concentration inhibited the a-amylase activity. However, the increase of both toxins concentration caused inverse effect. The interaction between toxins indicated synergetic effect on the b-amylase activity. An increased activity occurred when the toxins contamination levels in malt were higher (1000ng/g malt). The trichothecenes interfered with the performance of aminolitic enzymes in the stage of malting, resulting in a significant model for enzymatic activity of b-amylase.
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    Natural background assessment and Its anthropogenic contamination of Cd, Pb, Cu, Cr, Zn, Al and Fe in the sediments of the southern area of Patos Lagoon
    (2004) Niencheski, Luis Felipe Hax; Baraj, Edlira; Windom, Herbert Lynn; França, Rosiléa Garcia
    The Patos Lagoon, located in Southern Brazil, is the world's largest choked coastal lagoon with an approximately 151000 km2 watershed. It receives untreated domestic, agricultural and industrial wastes associated with the populations living along its margins. This study examined the distribution of Cd, Pb, Cu, Cr, Zn, Al and Fe in 15 sediment cores of the lagoon in an attempt to establish natural background levels of these metals and to assess anthropogenic influences on them. Al and Fe were tested as normalizes among which Al was chosen as the most appropriated for the sampling sites. In some stations anomalous concentrations for Cd, Pb and Cu were found and contamination of sediments with Zn, Cr,Al and Fe was also observed.