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Investigation of glutathione peroxidase activity in chicken meat under different experimental conditions Ciênc. Tecnol. Aliment.
Cichoski,Alexandre José; Rotta,Renata Bezerra; Scheuermann,Gerson; Cunha Junior,Anildo; Barin,Juliano Smanioto.
Due to the fact that previous studies on the enzymatic activity of Glutathione peroxidase (GSH-Px) diverge widely in their methodology and results, this study aimed to investigate the influence of different analytical conditions on GSH-Px activity in chicken thighs from broilers that were fed different diets with different sources and concentrations of selenium. GSH-Px activity was evaluated six hours after slaughter and 120 days after frozen storage at -18 ºC. The different analytical conditions included time of pre-incubation (0, 10 and 30 minutes), reaction medium, types of substrate (H2O2 (0.72 mM, 7.2 mM, and 72 mM) and Terc-butil hydroperoxide 15 mM), and different buffer concentrations (buffer 1, potassium phosphate 50 mM pH 7.0 + EDTA 1 mM +...
Tipo: Info:eu-repo/semantics/article Palavras-chave: GSH-Px; Meat chicken; Enzymatic activity; Selenium; Buffers; Substrate.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000400004
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Responses of Emergent Marsh Wetlands in Upstate New York to Variations in Urban Typology Ecology and Society
Kleppel, G. S.; Department of Biological Sciences, University at Albany, SUNY; gkleppel@csc.albany.edu; Madewell, Shirley A; Department of Biological Sciences, University at Albany, SUNY; madewell@mail.com; Hazzard, Sarah E; Department of Biological Sciences, University at Albany, SUNY; hazzads@ecostudies.org.
Although it has been repeatedly demonstrated that urbanization has negative environmental consequences, the conversion of land to urban use is increasing worldwide and is not likely to abate. We tested the hypothesis that different urban typologies, i.e., distributions of human population and infrastructure, differentially influence the water quality and ecological functionality of emergent marsh wetlands in New York State's Hudson River Valley. Wetlands were studied in two watersheds, defined as landscapes bounded by ridge lines, containing traditional small-town development and two watersheds containing suburban typologies. Land cover attributes were evaluated by analyzing ground-truthed, orthophotoquad data with a GIS. Water quality, the cover and...
Tipo: Peer-Reviewed Reports Palavras-chave: Hudson River Valley; New York State; Buffers; Land use; Small towns; Suburbs; Trophic transfer efficiency; Urban typology; Urbanization; Water quality; Watershed; Wetlands.
Ano: 2004
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