Psychrotrophic Bacteria
Mostrando 25-36 de 66 artigos, teses e dissertações.
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25. Atividade proteolítica, aderência e produção de biofilmes por microorganismos psicrotróficos em leite bovino / Proteolytic activity, adherence and biofilm production by psychrotrophic microorganisms in cattle milk
Bactérias psicrotróficas foram isoladas de leite cru refrigerado oriundo de duas indústrias de beneficiamento localizadas no sul do Brasil. Contagens de bactérias psicrotróficas foram entre 4,9 e 7,8 logUFC/mL e de 5,3 a 7,2 logUFC/mL, em amostras coletadas no caminhão-tanque e no silo de armazenamento da indústria, respectivamente. Dentre as bactéri
Publicado em: 2009
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26. Avaliação Físico-Química, Microbiológica e Sensorial do Presunto de Peru Submetido a Tecnologia de Alta Pressão Hidrostática. / Evaluation Physical Chemistry, Microbiological and the Sensory of ham turkey Submitted Technology of the High Hydrostatic Pressure.
The high hydrostatic pressure (HHP) is a technology that has advantages over conventional relationship the technologies that use heat and works with high pressure (100 MPa to 900MPa), maintains the sensory characteristics of food and close to the original, ensures a food safe from microbiological point of view and with increasing lifetime. In this study, wer
Publicado em: 2008
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27. Physiological, biochemical and microbiological responses of minimally processed and whole beet roots submitted to postharvest treatments / Respostas fisiológicas, bioquímicas e microbiológicas de beterrabas minimamente processadas e inteiras submetidas a tratamentos pós-colheita
The purpose of the present work was to evaluate physiological, biochemical and, microbiological aspects of Early Wonder whole and minimally processed beet roots submitted to different treatments. The following treatments were applied: ethylene (1000µL L-1), 1-MCP (300nL L-1) and, salicylic acid (500mg L-1). After treatments, beet roots were stored at 5oC du
Publicado em: 2008
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28. Processamento mínimo, fisiologia e conservação refrigerada de genótipos de tomate / Physiology and refrigerated conservation of fresh-cut tomato genotypes
The purpose of this work was to evaluate the physiological characteristics of ripening and to describe the potential conservation of fresh-cut Firme and Alambra mutant tomatoes (long life), in relation to Santa Clara (normal) and F1 (Firme x Santa Clara) tomatoes. Fruits were harvested at ripening stage 4 and kept for 15 days at 12 C, except for Alambra, har
Publicado em: 2008
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29. Determining milk fraud with whey by analyses of CMP and Pseudo-CMP by High Performance Liquid Chromatography in reversed phase with detection by mass spectrometry / Determinação de fraude de Leite com soro de leite pela análise de CMP e Pseudo-CMP por cromatografia líquida de alta eficiência em fase reversa com detecção por espectrometria de massa
The main objective of this work was the development of a method of analysis by High Performance Liquid Chromatography with reversed phase and detection by mass spectrometry to determine the adulteration of milk with whey by detection caseinomacropeptídio (CMP), and determine the effect on the cultivation of milk with Pseudomonas fluorescens to verify the oc
Publicado em: 2008
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30. Caracterização de protease e lipase de Pseudomonas fluorescens e quorum sensing em bactérias psicrotróficas isoladas de leite / Characterization of protease and lipase from Pseudomonas fluorescens and quorum sensing in psychrotrophic bacteria isolated from milk
Protease e lipase produzidas por Pseudomonas fluorescens foram purificadas e caracterizadas. Os genes aprX e lipM foram clonados, seqüenciados, e expressos em Escherichia coli e apresentaram alta identidade com as seqüências disponíveis no banco de dados. A massa molecular deduzida de ambas as enzimas foi de 50 kDa. Foi verificado que cálcio é essencia
Publicado em: 2007
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31. Respostas fisiológicas e bioquímicas de diferentes cultivares de batatas ao processamento mínimo / Physiological and biochemical responses of different potato cultivars to minimal processing
The purpose of the present work was to evaluate physiological and biochemical aspects of minimally processed Agata, Asterix and Monalisa potato cultivars. First physiological and microbiological variables of fresh-cut potatoes stored at 5, 15 and 25ºC were evaluated. Potatoes Asterixshowed the highest respiratory rates when compared to potatoes cv. Agata an
Publicado em: 2007
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32. Influência da microbiota psicrotrófica no rendimento de queijo Minas Frescal elaborado com leite estocado sob refrigeração / Psychrotrophic bacteria present in refrigerated milk on Minas Frescal cheese yield effect
The raw milk storage under cooling temperatures selects the psychrotropic bacteria growth including species able to produce heat resistant proteases and lipases that are usually associated with milk quality deterioration. The decrease in the cheese production yield is an important problem associated with the psychrotrophic bacteria growth in the refrigerated
Publicado em: 2006
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33. Avaliação da atividade antimicrobiana do vinagre em cortes de dianteiro bovino embalado a vacuo. / Evaluation of anti-microbiotic activity of vinegar in cuts of frontal cattle packed on hollow.
The objective of this work was to verify the effect of vinegar in the concentration of 2,4% of acidity, which was determined from the test of inhibitory minimal concentration (IMC), about the macrobiotic presents in cuts of frontal cattle, packed on hollow. It was analyzed frontal cuts from 14 bovine carcasses, males or females, Without Defined Race (WDR), a
Publicado em: 2006
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34. Quorum sensing signaling molecules in biofilms formed by psychrotrophic bacteria isolated from milk / Moléculas sinalizadoras de quorum sensing em biofilmes formados por bactérias psicrotróficas isoladas de leite
Os objetivos deste trabalho foram avaliar o efeito de diferentes meios de cultivo na formação de biofilmes e na atividade proteolítica de células sésseis e planctônicas de bactérias psicrotróficas isoladas de leite refrigerado; detectar a presença de moléculas sinalizadoras de quorum sensing produzidas por esses isolados e avaliar o efeito de furan
Publicado em: 2006
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35. Processamento mínimo de abóbora (Cucurbita moschata Duch.): alterações fisiológicas, qualitativas e microbiológicas. / Minimally processing of squash (Cucurbita moschata Duch.): phisiologycal, qualitative and microbiological changes.
The present work was carried out with the objective of determinate the physiological, qualitative and microbiological answers after minimally processing and develop a flowchart of specific preparation to minimally processing squashes, to increase the conservation time and reduce the quality losses. Different temperatures of minimally processing squashes cons
Publicado em: 2005
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36. Avaliação fisico-quimica e microbiologica de linguiça Toscana porcionada e armazenada em diferentes embalagens, sob condições em estocagem similares as praticadas em supermercado. / Microbiological and physicist-chemistry evaluation of Toscana sausage stored in different packings in the supermarket.
The re-packaging of food products is a very common procedure in the supermarket, especially in meat products, although the quality and safety of these products can be seriously endangered. Taking into account this situation, the objective of this work was to evaluate the physical, chemical and microbiological quality of Toscana sausage packaged in the superm
Publicado em: 2005