Denaturation Temperature
Mostrando 1-12 de 255 artigos, teses e dissertações.
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1. Characterization of hydrolysates of collagen from mechanically separated chicken meat residue
Abstract Obtaining collagen and hydrolysates from mechanically separated chicken meat residue is an excellent way to add value to this waste. The aims of this study were to obtain collagen hydrolysates from chicken MSM residue using Alcalase® and Flavourzyme® enzymes, as well characterizing the functional, structural and thermal stability properties. The h
Food Sci. Technol. Publicado em: 2020-06
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2. Thermodynamic and nutritional properties and drying kinetics of pequi (Caryocar brasiliense Cambess) mesocarp
RESUMO Objetivou-se ajustar modelos matemáticos aos dados experimentais da secagem do mesocarpo externo do pequi, determinar o coeficiente de difusão efetivo, e obter a energia de ativação e as propriedades termodinâmicas e nutricionais em diferentes condições de secagem. O mesocarpo dos frutos de pequi com teor de água inicial de 5,05 (base seca, de
Rev. bras. eng. agríc. ambient.. Publicado em: 12/08/2019
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3. Effect of extrusion cooking on physicochemical properties of tuna meat-based extrudates
Abstract Effect of extrusion cooking using different corn starch contents on the physicochemical properties (expansion ratio, bulk density, color, hardness, protein in vitro digestibility, crude protein content, thermal properties and microstructure) of tuna meat-based extrudates was investigated. The results showed that the increased corn starch content led
Food Sci. Technol. Publicado em: 27/05/2019
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4. Denaturation processes of collagen from cow bones as a function of temperature
ABSTRACT The thermal stability of collagen is of great interest for the scientific communities both of medicine and archaeology. In medicine, the interest is focused to the reconstruction and repair of bone and cartilage, given the frequency and importance of pathological situations. In contrast, in archaeology the interest is focused to infer from buried an
Matéria (Rio J.). Publicado em: 19/07/2018
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5. Conformational analysis of Pneumococcal Surface Antigen A (PsaA) upon zinc binding by fluorescence spectroscopy
ABSTRACT PsaA (pneumococcal surface antigen A) is a S. pneumoniae virulence factor that belongs to the metal transport system. The Manganese PsaA binding has been associated with oxidative stress resistance becoming a pivotal element in the bacteria virulence. It has been shown that Zinc inhibits the Manganese acquisition and promotes bacteria toxicity. We h
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018
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6. Evaluation of different software tools for deconvolving differential scanning calorimetry thermograms of salted beef
Abstract The objective of this research was to evaluate the ability and efficiency of different software tools for the deconvolution of DSC thermograms of protein denaturation in salted beef. The salted samples were obtained by immersing beef pieces in NaCl solutions with concentrations of 20, 50, 100 and 330 g NaCl L-1 of water for 48 hours at 10 °C. The r
Food Sci. Technol. Publicado em: 17/11/2016
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7. Effects of sequential enzymatic hydrolysis on structural, bioactive and functional properties of Phaseolus lunatus protein isolate
Significant initiatives exist within the global food market to search for new, alternative protein sources with better technological, functional, and nutritional properties. Lima bean (Phaseolus lunatus L.) protein isolate was hydrolyzed using a sequential pepsin-pancreatin enzymatic system. Hydrolysis was performed to produce limited (LH) and extensive hydr
Food Sci. Technol. Publicado em: 09/09/2014
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8. Thermal inactivation of polyphenoloxidase and peroxidase in Jubileu clingstone peach and yeast isolated from its spoiled puree
The thermal inactivation of yeast isolated from spoiled Jubileu peach puree and that of polyphenoloxidase (PPO) and peroxidase (POD) in cv. Jubileu, which is widely cultivated in southern Rio Grande do Sul state, Brazil, were studied. PPO and POD were extracted using the protein powder method and submitted to partial purification by precipitation followed by
Food Sci. Technol. Publicado em: 2014-03
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9. An oxidant and organic solvent tolerant alkaline lipase by P. aeruginosa mutant: downstream processing and biochemical characterization
An extracellular alkaline lipase from Pseudomonas aeruginosa mutant has been purified to homogeneity using acetone precipitation followed by anion exchange and gel filtration chromatography and resulted in 27-fold purification with 19.6% final recovery. SDS-PAGE study suggested that the purified lipase has an apparent molecular mass of 67 kDa. The optimum te
Braz. J. Microbiol.. Publicado em: 2013-12
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10. Influência de combinações de diferentes caotrópicos no espectro visível da hemoglobina e na estabilidade de membrana de eritrócitos humanos / Influence of combinations of different chaotropes in the visible spectrum of hemoglobin
CHAPTER II: This study aimed to investigate the influence of combinations of urea, ethanol and hypotonicity on the stability and spectrum of human hemoglobin. Protocols with fixed incubation time of 30 minutes at 37 C were used to analyze the spectra of commercial hemoglobin and hemoglobin of venous blood obtained from 20 healthy volunteers. The visible spec
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/01/2011
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11. Availability of ca, cu, fe, mg and zn in bovine, pork and chicken meat samples raw and termically processed / Determinação da disponibilidade de Ca, Cu, Fe, Mg e Zn em amostras de carnes bovinas, suínas e de frango In natura e processadas termicamente
In this work, the availability of Ca, Cu, Fe, Mg, and Zn in bovine, pork and chicken meat samples raw and after thermal treatments: water boiled, grilled, microwave, convention oven I 180 oC (FCI) and conventional oven II 60 min and 180 oC was evaluated. Total determination of Ca, Cu, Fe, Mg and Zn in bovine and pork samples was performed by inductively coup
Publicado em: 2010
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12. Propriedades termodinâmicas da Prolil Oligopeptidase de Trypanosoma brucei
Trypanosoma brucei secrets a prolyl oligopeptidase (POPTb) which is possibly involved in the pathogenesis of sleeping sickness. It is able to hydrolyze prolinecontaining peptide hormones and is therefore considered a good target for the development of drugs to treat the disease. As the crystal structure of POPTb has not been solved yet, we used circular dich
Publicado em: 2008