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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
28/05/2002 |
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Data da última atualização: |
30/03/2017 |
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Autoria: |
LACERDA, L. D.; PFEIFFER, W. C.; MARINS, R. V.; RODRIGUES, S.; SOUZA, C. M. M.; BASTOS, W. R. |
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Título: |
Mercury dispersal in water, sediments and aquatic biota of a gold mining tailing deposit drainage in Pocone, Brazil. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Water, Air and Soil Pollution, v.55, n.3/4, p.283-294, 1991. |
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Idioma: |
Inglês |
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Conteúdo: |
In the Pocone district, Brazil, Hg distribution was studied in a small watershed which drains tailings from a 10 yr old gold mining operation. Heavy regional rains are responsible for continuous weathering, thereby making it possible to transport Hg into the ecologically important Pantanal area. Mercury concentrations in creek sediments range from < 0.02 to 0.18 mg. kg-1. The highest concentrations occur close to the tailings deposit. Mercury concentrations in the water always below the detection limit of the analytical method used (< 0.04 ug. L-1). Suspended matter samples collected before, during and after a storm, showed a Hg peak value of 0.61 mg kg-1 about 30 min after the event. Dissolved Hg concentration still fell below the detection limit. Among the biota, molluscs accumulated moderately high concentrations of Hg, while macrophytes and fish did not. Mercury concentrations in molluscs were dependent on size, with larger animals presenting higher Hg concentration. We conclude that Hg present in the tailings shows low mobility and that its eventual transport into the drainage system is dependent on the erosion of fine material from the wastes during rains, resulting ain a restricted contamination of the area and low Hg concentration in the biota. |
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Palavras-Chave: |
Aquatic biota; Biota aquatica; Gold mining; Mineracao de ouro; Pocone; Sediment. |
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Thesagro: |
Água; Mercúrio; Sedimento. |
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Thesaurus Nal: |
Brazil; mercury; Pantanal; water. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02170naa a2200337 a 4500
001 1810111
005 2017-03-30
008 1991 bl --- 0-- u #d
100 1 $aLACERDA, L. D.
245 $aMercury dispersal in water, sediments and aquatic biota of a gold mining tailing deposit drainage in Pocone, Brazil.
260 $c1991
520 $aIn the Pocone district, Brazil, Hg distribution was studied in a small watershed which drains tailings from a 10 yr old gold mining operation. Heavy regional rains are responsible for continuous weathering, thereby making it possible to transport Hg into the ecologically important Pantanal area. Mercury concentrations in creek sediments range from < 0.02 to 0.18 mg. kg-1. The highest concentrations occur close to the tailings deposit. Mercury concentrations in the water always below the detection limit of the analytical method used (< 0.04 ug. L-1). Suspended matter samples collected before, during and after a storm, showed a Hg peak value of 0.61 mg kg-1 about 30 min after the event. Dissolved Hg concentration still fell below the detection limit. Among the biota, molluscs accumulated moderately high concentrations of Hg, while macrophytes and fish did not. Mercury concentrations in molluscs were dependent on size, with larger animals presenting higher Hg concentration. We conclude that Hg present in the tailings shows low mobility and that its eventual transport into the drainage system is dependent on the erosion of fine material from the wastes during rains, resulting ain a restricted contamination of the area and low Hg concentration in the biota.
650 $aBrazil
650 $amercury
650 $aPantanal
650 $awater
650 $aÁgua
650 $aMercúrio
650 $aSedimento
653 $aAquatic biota
653 $aBiota aquatica
653 $aGold mining
653 $aMineracao de ouro
653 $aPocone
653 $aSediment
700 1 $aPFEIFFER, W. C.
700 1 $aMARINS, R. V.
700 1 $aRODRIGUES, S.
700 1 $aSOUZA, C. M. M.
700 1 $aBASTOS, W. R.
773 $tWater, Air and Soil Pollution$gv.55, n.3/4, p.283-294, 1991.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
10/12/2019 |
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Data da última atualização: |
20/04/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
GOMES, M. J. C.; LIMA, S. L. S.; ALVES, N. E. G.; ASSIS, A.; MOREIRA, M. E. C.; TOLEDO, R. C. L.; ROSA, C. O. B.; TEIXEIRA, O. R.; BASSINELLO, P. Z.; MEJÍA, E. G. de; MARTINO, H. S. D. |
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Afiliação: |
MARIANA J. C. GOMES, UNIVERSIDADE FEDERAL DE VIÇOSA; SÂMARA L. S. LIMA, UNIVERSIDADE FEDERAL DE VIÇOSA; NATÁLIA E. G. ALVES, UNIVERSIDADE FEDERAL DE VIÇOSA; ANDRESSA ASSIS, UNIVERSIDADE FEDERAL DE VIÇOSA; MARIA E. C. MOREIRA, UNIVERSIDADE FEDERAL DE VIÇOSA; RENATA C. L. TOLEDO, UNIVERSIDADE FEDERAL DE VIÇOSA; CARLA O. B. ROSA, UNIVERSIDADE FEDERAL DE VIÇOSA; OLÍVIA R. TEIXEIRA; PRISCILA ZACZUK BASSINELLO, CNPAF; ELVIRA G. DE MEJÍA, University of Illinois; HÉRCIA S. D. MARTINO, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Common bean protein hydrolysate modulates lipid metabolism and prevents endothelial dysfunction in BALB/c mice fed an atherogenic diet. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Nutrition, Metabolism & Cardiovascular Diseases, v. 30, n. 1, p. 141-150, Jan. 2020. |
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ISSN: |
0939-4753 |
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DOI: |
10.1016/j.numecd.2019.07.020 |
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Idioma: |
Português |
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Conteúdo: |
Background and aims: Common beans (Phaseolus vulgaris L.) protein hydrolysate is a source of bioactive peptides with known health benefits. The aim of this study was to evaluate the effect of common bean protein hydrolysate on lipid metabolism and endothelial function in male adult BALB/c mice fed an atherogenic diet for nine weeks. Methods and results: Male adult mice were divided into three experimental groups (n = 12) and fed with normal control diet; atherogenic diet and atherogenic diet added with bean protein hydrolysate (700 mg/kg/day) for nine weeks. Food intake, weight gain, lipid profile, Atherogenic Index of Plasma, inflammation biomarkers and endothelial function were evaluated. APH group presented reduced feed intake, weight gain, lipid profile, tumor necrosis factor-a, angiotensin II (94% and 79%, respectively) and increased endothelial nitric oxide synthase (62%). Conclusions: Protein hydrolysate showed hypocholesterolemic activity preventing inflammation and dysfunction of vascular endothelium, in addition to decreasing oxidative stress, indicating an adjuvant effect on reducing atherogenic risk. |
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Thesagro: |
Feijão; Nutrição; Phaseolus Vulgaris; Proteína Hidrolisada; Saúde. |
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Thesaurus NAL: |
Beans; Nutrition; Protein hydrolysates. |
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Categoria do assunto: |
Q Alimentos e Nutrição Humana |
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Marc: |
LEADER 02225naa a2200361 a 4500
001 2116583
005 2020-04-20
008 2020 bl uuuu u00u1 u #d
022 $a0939-4753
024 7 $a10.1016/j.numecd.2019.07.020$2DOI
100 1 $aGOMES, M. J. C.
245 $aCommon bean protein hydrolysate modulates lipid metabolism and prevents endothelial dysfunction in BALB/c mice fed an atherogenic diet.$h[electronic resource]
260 $c2020
520 $aBackground and aims: Common beans (Phaseolus vulgaris L.) protein hydrolysate is a source of bioactive peptides with known health benefits. The aim of this study was to evaluate the effect of common bean protein hydrolysate on lipid metabolism and endothelial function in male adult BALB/c mice fed an atherogenic diet for nine weeks. Methods and results: Male adult mice were divided into three experimental groups (n = 12) and fed with normal control diet; atherogenic diet and atherogenic diet added with bean protein hydrolysate (700 mg/kg/day) for nine weeks. Food intake, weight gain, lipid profile, Atherogenic Index of Plasma, inflammation biomarkers and endothelial function were evaluated. APH group presented reduced feed intake, weight gain, lipid profile, tumor necrosis factor-a, angiotensin II (94% and 79%, respectively) and increased endothelial nitric oxide synthase (62%). Conclusions: Protein hydrolysate showed hypocholesterolemic activity preventing inflammation and dysfunction of vascular endothelium, in addition to decreasing oxidative stress, indicating an adjuvant effect on reducing atherogenic risk.
650 $aBeans
650 $aNutrition
650 $aProtein hydrolysates
650 $aFeijão
650 $aNutrição
650 $aPhaseolus Vulgaris
650 $aProteína Hidrolisada
650 $aSaúde
700 1 $aLIMA, S. L. S.
700 1 $aALVES, N. E. G.
700 1 $aASSIS, A.
700 1 $aMOREIRA, M. E. C.
700 1 $aTOLEDO, R. C. L.
700 1 $aROSA, C. O. B.
700 1 $aTEIXEIRA, O. R.
700 1 $aBASSINELLO, P. Z.
700 1 $aMEJÍA, E. G. de
700 1 $aMARTINO, H. S. D.
773 $tNutrition, Metabolism & Cardiovascular Diseases$gv. 30, n. 1, p. 141-150, Jan. 2020.
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Embrapa Arroz e Feijão (CNPAF) |
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