Sodium Metabisulphite
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Acute toxicity of sodium metabisulphite on mangrove crab Ucides cordatus (Decapoda, Ucididae)
O metabissulfito de sódio é um sal habitualmente usado no cultivo de camarão a fim de se evitar a melanose. Infelizmente o efeito toxicológico deste xenobiótico em caranguejos decápodes é desconhecido. O presente estudo objetiva investigar o LC50 - 96 h do metabissulfito de sódio na espécie Ucides cordatus em manguezal. A coleta dos caranguejos foi
An. Acad. Bras. Ciênc.. Publicado em: 18/09/2012
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2. Qualidade do camarão da espécie Xyphopenaeus kroyeri mediante a ação dos agentes antimelanóticos / Quality of shrimp Xyphopenaeus kroyeri submitted to antimelanotic agents
Sea shrimp captured in the Brazilian coast represents an important segment of the seafood particularly due to the market value. Being a highly perishable food, it requests special cares for commercialization, conservation and industrialization. The control of the quality begins as soon as post-capture in the vessel. The immediate operations accomplished afte
Publicado em: 2008
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3. Efeito de diferentes concentrações de conservantes alimentícios no crescimento in vitro de fungos termorresistentes e bactérias patogênicas. / Effect of different concentrations of food preservatives on the growth of heat-resistant and pathogenic bacteria in vitro.
Os alimentos se constituem em ótimos suprimentos para uma grande diversidade de microrganismos, sendo eles fungos filamentosos e leveduriformes ou bactérias. São, portanto, veículo de uma série de doenças infecciosas. Assim o homem tem buscado evitar tal proliferação microbiana, mantendo a integridade do produto a ser comercializado ou consumido, atr
Publicado em: 2008
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4. Toxicidade do efluente de uma fazenda de cultivo de camarÃo marinho Litopanaeus vannamei e do metabissulfito de sÃdio em juvenis de Mysidopsis juniae / Toxicity of an effluent produced by a Litopenaeus vannamei shrimp farm and sodium metabisulphite on Mysidopsis juniae juveniles
Shrimp represents the most important aquaculture product in many countries. However there are considerable ecological costs associated with this activity and the introduction of effluents into receiving water without any treatment have attracted considerable attention. These effluents contained organic matter, nitrate, nitrite, phosphates and other substance
Publicado em: 2006
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5. Oxidation of sodium metabisulphite containing in the wastewater of the shrimp farming / Estudo da oxidação do metabissulfito de sódio contido no efluente da carcinicultura
The shrimp farming is a process of creation of shrimp that has been growing rapidly in the country, occupying a meaningful space in the Brazilian exporting. In 2003, this activity presented a volume of 60 millions of tons and 220 millions of dollars, being the main generator of employment and income of the primary sector of the northeast economy. However, it
Publicado em: 2005
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6. Uso do metabissulfito de sódio na pós-colheita do camarão marinho Litopenaeus vannamei (Boone,1931)
Na aqüicultura mundial, a carcinicultura tem se destacado como uma atividade de grande rentabilidade, contribuindo para o crescimento econômico do agronegócio. No Brasil, a atividade apresenta excelente desempenho, mobilizando grandes investimentos e gerando empregos principalmente na região Nordeste, cuja produção em grande parte é destinada às expo
Publicado em: 2005
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7. New tecnologies and pre-treatments: vacumm packed dried tomato. / Novas tecnologias e pre-tratamentos : tomate seco embalado a vacuo.
Osmotic concentration and other pre-treatments aim to improve product quality and optimise the drying process. Amongst these treatments one can mention the use of antioxidants to avoid excessive browning and maintain the nutritional characteristics. The incorporation of tomato concentrate at 18 to 36°Brix is not a method currently used in the manufacture of
Publicado em: 2005
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8. Otimização e comparação dos processos de desidratação osmotica a vacuo e a pressão ambiente de pseudofruto de caju (Anacardium occidentale L)
Despite being considered as an important producer of tropical fruits, Brazil presents a food wastage rate exceeding 35% of its production. This fact justifies research into low cost preservation methods leading to stable products and conserving, with only slight alterations, the nutritive and organoleptic characterisitics, aiming possibly at exportation. The
Publicado em: 2000
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9. Extração, purificação e propriedades da polifenoloxidase da banana nanica Musa cavendishii, L
The polyphenoloxidase of banana "nanica" (Musa cavendishii L.) was extracted from the central part of half mature fruit by homogenising in a blender at room temperature with a buffer solution of 0.2 M phosphate (pH 7.0) containing 1% of insoluble PVP and 0.5% of Triton X-100. The crude extract was precipitated with 2 volumes of acetone, previously cooled dow
Publicado em: 1978
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10. Cross refractoriness between sodium metabisulphite and exercise induced asthma.
BACKGROUND--Exercise and inhaled sodium metabisulphite are thought to cause bronchoconstriction in asthma through different mechanisms. The response to both stimuli becomes refractory with repeat challenge. The mechanism of refractoriness is unclear, although depletion of mast cell derived mediators or neurotransmitters has been suggested. Recent studies sug
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11. Inhibition of sodium metabisulphite induced bronchoconstriction by frusemide in asthma: role of cyclooxygenase products.
BACKGROUND--Inhaled frusemide inhibits airway responses to sodium metabisulphite and other indirect bronchial challenges in asthma by undetermined mechanisms which may relate to its ability to stimulate prostaglandin release. Inhalation of sodium metabisulphite provokes indirect bronchoconstriction, possibly by activating sensory nerves. To investigate the r
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12. Effect of inhaled prostaglandin E2 on bronchial reactivity to sodium metabisulphite and methacholine in patients with asthma.
Inhaled frusemide protects against the bronchoconstrictor response to a wide range of stimuli that cause bronchoconstriction by indirect mechanisms. One possible explanation for this protection relates to the known ability of frusemide to enhance synthesis of prostaglandin E2 (PGE2). Studies in vitro suggest that PGE2 might protect against indirectly acting