Baker Yeast
Mostrando 1-12 de 144 artigos, teses e dissertações.
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1. Baker’s yeast-MnO2 composites as biosorbent for Malachite green: An ecofriendly approach for dye removal from aqueous solution
Resumo Neste estudo, compósitos de MnO2-levedura de pão, produzidos pela oxidação direta da levedura com KMnO4 sob condições ácidas, foram usados como biossorvente para remover o corante trifenilmetano verde Malaquita (VM) de solução aquosa. Os parâmetros que influenciam o processo de adsorção tais como pH, tempo de contato, temperatura, concentr
Rev. Ambient. Água. Publicado em: 07/01/2019
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2. Yeast biomass production: a new approach in glucose-limited feeding strategy
The aim of this work was to implement experimentally a simple glucose-limited feeding strategy for yeast biomass production in a bubble column reactor based on a spreadsheet simulator suitable for industrial application. In biomass production process using Saccharomyces cerevisiae strains, one of the constraints is the strong tendency of these species to met
Braz. J. Microbiol.. Publicado em: 2013
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3. Effect of acid hydrolysis and fungal biotreatment on agro-industrial wastes for obtainment of free sugars for bioethanol production
This study was designed to evaluate selected chemical and microbiological treatments for the conversion of certain local agro-industrial wastes (rice straw, corn stalks, sawdust, sugar beet waste and sugarcane bagasse) to ethanol. The chemical composition of these feedstocks was determined. Conversion of wastes to free sugars by acid hydrolysis varied from o
Braz. J. Microbiol.. Publicado em: 2012-12
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4. Pequi cake composition, hydrolysis and fermentation to bioethanol
Pequizeiro (Caryocar brasiliense Camb) fruits have been evaluated as a potential raw material for the newly established biodiesel industry. This scenario demands applications using the solid co-product derived from the extraction of pequi oil, called cake or meal. This study analyses the acid hydrolysis of carbohydrates present in the pequi meal in order to
Brazilian Journal of Chemical Engineering. Publicado em: 2011-03
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5. Antipyretic and antioxidant activities of 5-trifluoromethyl-4,5-dihydro-1H-pyrazoles in rats
The objective of this study was to determine the effect of eight 5-hydroxy-5-trifluoromethyl-4,5-dihydro-1H-1-carboxyamidepyrazoles (TFDPs) on rat body temperature and baker’s yeast-induced fever. TFDPs or vehicle (5% Tween 80 in 0.9% NaCl, 5 mL/kg) were injected subcutaneously and rectal temperature was measured as a function of time in 28-day-old male Wi
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-12
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6. Determinação seletiva de tributilestanho na presença de Sn(IV) em amostras ambientais usando HG-ICP OES e Saccharomyces cerevisiae como material sorvente
A method for selective determination of tributyltin in the presence of Sn(IV) by combining hydride generation inductively coupled plasma optical emission spectrometry (HG-ICP OES) and solid phase extraction (SPE) using baker's yeast is proposed. The procedure is based on selective retention of TBT by the yeast at pH = 6. Detection limit of 1.9 µg L-1 and qu
Química Nova. Publicado em: 2010
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7. Avaliação do potencial antiinflamatório e antipirético da N-acetilcisteína sobre modelo de peritonite induzida por Saccharomyces cerevisae / Evaluation of anti-inflammatory and antipyretic effects of nacetylcysteine on baker yeast-induced peritonitis
A resposta febril é um processo dependente de inflamação, desencadeado pela produção de citocinas pró-inflamatórias a partir de fagócitos ativados. Estes mediadores podem ser liberados na corrente sangüínea ou ainda estimular nervos sensoriais e, desta forma, transmitir o sinal inflamatório até o centro termo controlador cerebral e, assim, elevar
Publicado em: 2009
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8. Estudo da redução de iminas / Stydy of imine reduction
This project studies the behavior of a series of imines structurally analogues in bioreductions with baker yeast and carrots, and also with NaBH4 using alternative chiral reagents like 1-amine-2-propanol, prolinol and 2-a- hidroxybenzyl-benzimidazole or tartaric acid. For biocatalysis we investigated different temperatures, solvents and proportions of reagen
Publicado em: 2008
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9. PADRONIZAÇÃO E VALIDAÇÃO DE UM NOVO MODELO DE FEBRE INDUZIDA PELA INJEÇÃO INTRATECAL DE PROSTAGLANDINA E2 EM RATOS JOVENS / CHARACTERIZATION AND VALIDATION OF A NEW FEVER MODEL INDUCED BY THE INTRATHECAL INJECTION OF PROSTAGLANDIN E2 IN YOUNG RATS
The fever response, besides being part of host defense response to infection or inflammation, is associated with discomfort and anxiety and may constitute a risk for febrile seizures in children. Therefore, antipyretic therapy is routinely prescribed for febrile patients. The animal models of fever using the systemic injection of lipopolysaccharide (LPS) and
Publicado em: 2006
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10. EFEITO DA DIACEREÍNA SOBRE A FEBRE INDUZIDA POR SUSPENSÃO DE Saccharomyces cerevisiae E POR PROSTAGLANDINA E2 EM RATOS JOVENS. / EFFECT OF DIACEREIN ON BAKER YEAST- AND PROSTAGLANDIN E2-INDUCED FEVER IN YOUNG RATS.
Fever is a systemic response that results of a cascade of events that usually begins with pathogenic infection. Its development represents an important aspect of host defense that is mediated by the central nervous system. However, antipyretic medication are routinely prescribed because fever is associated with discomfort and anxiety, apart from to represent
Publicado em: 2005
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11. Aromatic compounds containing Selenium and Tellurium: application of biocatalysis for preparation of enatiomerically enriched aromatic selenides and tellurides / Derivados aromáticos de selênio e telúrio: aplicação da biocatálise na preparação de selenetos e teluretos aromáticos enantiomericamente enriquecidos
A primeira parte desta tese consiste na preparação de compostos aromáticos contendo átomos de selênio e de telúrio. Quatro metodologias foram utilizadas para essa finalidade, a saber: orto-metalação de compostos contendo oxigênio, troca metal-halogênio em haletos aromáticos substituídos, reação de substituição eletrofílica aromática entre t
Publicado em: 2005
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12. O emprego de fermento de pão, Saccharomyces cerevisiae, na síntese de feromônios
The use of pheromones in integrated pest management has been increasing in the last years due to environmental concern. This development is accompanied by the search for simple, efficient and less aggressive synthetic methodologies for the preparation of pheromones. One of these methodologies includes microbiological reactions, more specifically biocatalytic
Química Nova. Publicado em: 2004-06