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Microrganismos patogénicos nos alimentos
Furtado, RosáliaA apresentação aborda diversos temas, nomeadamente abrangendo os seguintes tópicos: "Microrganismos patogénicos nos alimentos, Métodos analíticos e Expressão de resultados. A temática deste curso de Microbiologia Alimentar abrangeu áreas de estudo relacionadas com a garantia da segurança dos alimentos no que se refere à presença de contaminantes microbiológicos. Como metodologia de ensino e suporte às atividade...
Phenotypic and Genotypic Characterization of Escherichia coli and Salmonella sp...
Gonçalves, Carlota; Silveira, Leonor; Rodrigues, João; Furtado, Rosália; Ramos, Sónia; Nunes, Alexandra; Pista, ÂngelaBackground: Foodborne diseases are a serious public health concern, and food-producing animals are a major source of contamination. Methods: The present study analysed Escherichia coli and Salmonella spp. isolated from faecal samples of 100 fattening pigs and from 52 samples of pork meat. Results: The results showed that the majority of the analysed meat samples were considered satisfactory in terms of microbio...
Raw milk cheeses from Beira Baixa, Portugal - A contributive study for the micr...
Mendonça, Rita; Furtado, Rosália; Coelho, Anabela; Correia, Cristina Belo; Suyarko, Elena; Borges, Vítor; Gomes, João Paulo; Pista, AngelaDue to specific bacterial microbiota, raw milk cheeses have appreciated sensory properties. However, they may pose a threat to consumer safety due to potential pathogens presence. This study evaluated the microbiological contamination of 98 raw milk cheeses from Beira Baixa, Portugal. Presence and enumeration of Coagulase Positive Staphylococci (CPS), Listeria monocytogenes, Salmonella spp., pathogenic Escheric...
Antioxidant and antimicrobial properties of PLA based active packaging with pom...
Andrade, Mariana; Rodrigues, Pedro; Barros, Carolina; Cruz, Vasco; Machado, Ana; Barbosa, Cássia; Coelho, Anabela; Furtado, Rosália; Correia, CristinaActive food packaging’ primary goal is to extend foodstuffs’ shelf life, through a dynamic and continuous interaction between the package and the packaged food. In an emission active packaging, the objective is the gradual release of antioxidant and/or antimicrobial compounds into the food surface, to delay the natural foods’ degradation. The active compounds can be extracted from several sources, such as aroma...
Extending High Fatty Foods Shelf-Life Protecting from Lipid Oxidation and Micro...
Andrade, Mariana A.; Rodrigues, Pedro V.; Barros, Carolina; Cruz, Vasco; Machado, Ana Vera; Barbosa, Cássia H.; Coelho, Anabela; Furtado, RosáliaThe search for new forms to extend foodstuffs’ shelf-life through the use of natural compounds and extracts continues to grow among researchers and the industry. In this line of thought, the main objective of this work was to develop, characterize and evaluate the effectiveness of an active food packaging based on polylactic acid (PLA) and incorporated with natural extracts obtained from grape and/or pomegranat...
Extending high fatty foods shelf-life protecting from lipid oxidation and micro...
Andrade, Mariana A.; Rodrigues, Pedro V.; Barros, Carolina; Cruz, Vasco; Machado, A. V.; Barbosa, Cássia H.; Coelho, Anabela; Furtado, RosáliaThe search for new forms to extend foodstuffs’ shelf-life through the use of natural compounds and extracts continues to grow among researchers and the industry. In this line of thought, the main objective of this work was to develop, characterize and evaluate the effectiveness of an active food packaging based on polylactic acid (PLA) and incorporated with natural extracts obtained from grape and/or pomegranat...
PLA films loaded with green tea and rosemary polyphenolic extracts as an active...
Andrade, Mariana A.; Barbosa, Cássia H.; Cerqueira, Miguel A.; Azevedo, Ana Gabriela; Barros, Carolina Lemos; Machado, A. V.; Coelho, AnabelaIn the present study, RE presented higher antioxidant capacity and higher content of total phenolic compounds than GTE. While the main phenolic compounds identified in RE were carnosic acid, carnosol and rosmarinic acid, in GTE catechins, rutin and gallic acid were the main identifies compounds. Extracts were incorporated into PLA active films, followed by the evaluation of its properties. The potential of the ...
Extending High Fatty Foods Shelf-Life Protecting from Lipid Oxidation and Micro...
Andrade, Mariana A.; Rodrigues, Pedro V.; Barros, Carolina; Cruz, Vasco; Machado, Ana Vera; Barbosa, Cássia H.; Coelho, Anabela; Furtado, RosáliaThe search for new forms to extend foodstuffs’ shelf-life through the use of natural compounds and extracts continues to grow among researchers and the industry. In this line of thought, the main objective of this work was to develop, characterize and evaluate the effectiveness of an active food packaging based on polylactic acid (PLA) and incorporated with natural extracts obtained from grape and/or pomegranat...
Extending beef meat shelf life: an approach using active food packaging with po...
Andrade, Mariana; Rodrigues, Pedro; Barros, Carolina; Cruz, Vasco; Machado, Ana; Barbosa, Cássia; Coelho, Anabela; Furtado, Rosália; Correia, CristinaMore than 50% of the pomegranate fruit (Punica granatum L.) is not considered edible, being composed by peels (50%) and seeds (10%). Pomegranate peels represent an excellent source of bioactive compounds with excellent antioxidant and antimicrobial activities due to the peels’ high content in phenolic compounds, specially punicalagin (A+B) and ellagic acid. The aim of the present study was to evaluate the poten...
Caracterização genotípica e fenotípica de estirpes de Escherichia coli patogéni...
Batista, Rita; Saraiva, Margarida; Lopes, Teresa; Silveira, Leonor; Coelho, Anabela; Furtado, Rosália; Castro, Rita; Correia, Cristina BeloAs aves são potenciais portadoras de microrganismos patogénicos que afetam os seres humanos, e podem ser disseminadoras de perigos no ambiente de produção primária de géneros alimentícios de origem vege- tal e animal. Este trabalho teve como objetivo avaliar a ocorrência, em fezes de aves em liberdade, em Portugal, de três bactérias zoonóticas causadoras de infeções no Homem. Para tal, foi avaliada a presença d...