Freezing Thawing Cycles
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Effects of freezing and thawing cycles on the quality of Nile tilapia fillets
Abstract The aim of this investigation was to evaluate the impact of multiple freezing and thawing cycles on the physicochemical properties of Nile tilapia fillets. For this purpose, 72 fresh Nile tilapia fillets were packed and stored in a freezer at -18 °C. The frozen samples were submitted to five freeze-thaw cycles; in each cycle, the freezer was switch
Food Sci. Technol. Publicado em: 2020-06
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2. Effects of freezing and thawing cycles on the quality of Nile tilapia fillets
Abstract The aim of this investigation was to evaluate the impact of multiple freezing and thawing cycles on the physicochemical properties of Nile tilapia fillets. For this purpose, 72 fresh Nile tilapia fillets were packed and stored in a freezer at -18 °C. The frozen samples were submitted to five freeze-thaw cycles; in each cycle, the freezer was switch
Food Sci. Technol. Publicado em: 20/12/2019
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3. Effec t of Freeze-Thaw Cycles on Lipid Oxidation and Myowater in Broiler Chickens
ABSTRACT The present study was carried out to investigate the influence of freezing-thawing cycles (0, 2, 4 and 6) on lipid oxidation and myowater contents and distribution. Nine replicates of chicken breast meat samples were used for each cycle. Lipid oxidation was determined by measuring peroxide value, and malondialdehyde (MDA) concentrations, which refle
Rev. Bras. Cienc. Avic.. Publicado em: 2016-03
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4. Optimization of the RNeasy Mini Kit to obtain high-quality total RNA from sessile cells of Staphylococcus aureus
Biofilm formed by Staphylococcus aureus is considered an important virulence trait in the pathogenesis of infections associated with implantable medical devices. Gene expression analyses are important strategies for determining the mechanisms involved in production and regulation of biofilm. Obtaining intact RNA preparations is the first and most critical st
Braz J Med Biol Res. Publicado em: 2015-12
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5. Histomorphometric assessment of bone necrosis produced by two cryosurgery protocols using liquid nitrogen: an experimental study on rat femurs
OBJECTIVE: The aim of this study was to evaluate the effects of liquid nitrogen cryosurgery on the femoral diaphysis of rats. MATERIAL AND METHODS: The femoral diaphyses of 42 Wistar rats were exposed to three local and sequential applications of liquid nitrogen for 1 or 2 min, intercalated with periods of 5 min of passive thawing. The animals were sacrifice
Journal of Applied Oral Science. Publicado em: 2011-12
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6. Hemolytic toxin from the soft coral Sarcophyton trocheliophorum: isolation and physiological characterization
The unifying characteristic of cnidarians is the production of protein and polypeptide toxins. The present study describes the identification of a hemolytic toxin from the soft coral Sarcophyton trocheliophorum. The crude extract was highly cytotoxic (EC50 = 50 ng/mL) against human erythrocytes. It was also tested for hemolytic activity by the blood agar pla
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 05/02/2010
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7. High performance concrete applied to storage and processing system buildings at low temperatures / Concreto de alto desempenho aplicado a sistemas de processamento e armazenagem de alimentos em baixas temperaturas
Brazil has rapidly emerged as one of the worlds leading meat exporters, being responsible by 33% of this market. In face of that, a high performance concrete (HPC), that can be applied to storage and processing system buildings at low temperatures, has been developed with the aim of answering the needs of brazilian food manufacturers that use cooling technol
Publicado em: 2008
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8. Propriedades bioquímicas e cinético-enzimáticas de cisteíno- proteases do intestino médio da lagarta da soja / Biochemistry and kinectics-enzymatics properties of cysteine-proteases of the velvetbean caterpillar midgut
Protease inhibitors that react with insect specific proteases are candidates to have their genetic code inserted in genetically modified plants. The first step to achieve this is the characterization of proteolytic enzymes of these insects intestines. Cysteine-protease of the soluble and insoluble fractions from the midgut of Anticarsia gemmatalis were chara
Publicado em: 2008
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9. Revestimento de stents com filmes de PVA eluidores de S-nitrosoglutationa / Stents coating with S-nitrosoglutathione-eluting poly (vynyl alcohol) films
Stents are expansible wire mesh tubes used in angioplasty procedures in order to widening the luminal diameter of the coronary arteries. There is currently a great interest in the development of stents coated with drug-eluting polymeric matrices, which are able to prevent future closure of artery (restenosis). S-nitrosothiols which are nitric oxide (NO) dono
Publicado em: 2006
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10. Acid phosphatase from the microalgae Selenastrum capricornutum : extraction, characterization and effect of agriculture pollutants / Fosfatase acida da microalga Selenastrum capricornutum : extração, caracterização e efeito de poluentes de origem agricola
Selenastrum capricornutum is an unicellular green algae widely distributed in freshwater and soils among the world. Because this cosmopolitan characteristic its use is recommended by national and international protocols in ecotoxicity studies. Algae acid phosphatase plays important roles in the metabolism such as decomposing organic phosphates into free phos
Publicado em: 2005
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11. A Requirement for Sucrose in Xylem Sap Flow from Dormant Maple Trees 1
The response of excised stem segments of several tree species to freezing and thawing cycles was studied. All species studied (Thuja occidentalis, Fagus grandifolia, and Betula papyrifera) except maple (Acer spp.) exuded sap while freezing and absorbed on thawing. Maple stems absorbed sap while freezing and exuded sap during the thaw only when sucrose was pr
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12. Factors Affecting the Rate of Killing of Escherichia coli by Repeated Freezing and Thawing
Packer, Elliot L. (University of California, Davis), John L. Ingraham, and Stanley Scher. Factors affecting the rate of killing of Escherichia coli by repeated freezing and thawing. J. Bacteriol. 89:718–724. 1965.—Repeated freezing and thawing of cultures of Escherichia coli grown in a minimal medium and frozen in the same medium without carbon source re