Navegando por Autor "JOELE, Maria Regina Sarkis Peixoto"

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Acesso aberto (Open Access)
Change in physical and chemical characteristics related to the binomial time-temperature used in sous pasteurization see Tambaqui (Colossoma macropomum)
(FEPMVZ Editora, 2016-02) KATO, Hellen Christina de Almeida; LOURENÇO, Lúcia de Fátima Henriques; ARAUJO, Eder Augusto Furtado; SOUSA, Consuelo Lúcia; JOELE, Maria Regina Sarkis Peixoto; RIBEIRO, Suezilde da Conceição Amaral
The goal of this study was to evaluate sous vide fish and assess the influence of time and temperature on the pasteurization process through quality parameters. The raw material (tambaqui fillets) and the sous vide underwent physical, physicochemical, and microbiological analyses. A sauce was prepared containing soy sauce, water, horseradish and garlic flakes. The product's pasteurization parameters of time and temperature were defined according to a 22 central composite rotatable design (CCRD), and the dependent variables were water holding capacity (WHC) and instrumental texture aiming at obtaining high WHC values for the product to maintain the desired juiciness. The microbiological analysis required by legislation have indicated that the fish fillets and sous vide were within de standard. The values of total coliforms found in the samples (fillets and sous vide) analyzed were below the critical level of 10² CFU/g. The counts of sulphite-reducing clostridia and psychrotrophic and mesophilic bacteria on plates in the samples were <1x10 CFU/g. In conclusion, temperature was the most important factor in the pasteurization process, significantly contributing to the quality of the final product. The mathematical models proposed were considered predictive for each response.
Acesso aberto (Open Access)
Effect of adding fatty acids and surfactant on the functional properties of biodegradable films prepared with myofibrillar proteins from acoupa weakfish (cynoscion acoupa). Food science and technology
(Universidade Federal do Pará, 2019-06) PEREIRA, Gleice Vasconcelos da Silva; PEREIRA, Glauce Vasconcelos da Silva; NEVES, Eleda Maria Paixão Xavier; JOELE, Maria Regina Sarkis Peixoto; LIMA, Consuelo Lúcia Sousa de; LOURENÇO, Lúcia de Fátima Henriques
This research aimed to assess the properties of biodegradable films prepared with lyophilized myofibrillar proteins (LMP) from fish filleting residues, fatty acids (stearic, palmitic, and caproic), and surfactant (SLS). The films were characterized to assess the effects of adding those components. Adding fatty acids and SLS resulted in more flexible films with higher elongation values compared to the LMP film. The films prepared with 5% stearic acid and 10% SLS and with 10% palmitic acid and 20% SLS had higher tensile strength compared to the LMP film. Solubility reached 100% in the films added with 10% fatty acids with and without SLS. Increasing the concentration of fatty acids and SLS led to less transparent films. Microscopy analysis showed changes in the morphological structure of the films added with fatty acids and SLS, resulting in whitish films when greater SLS contents were used.