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Qualidade microbiológica de “comida de rua” pronta para consumo comercializada ...
Barreira, Maria João; Marcos, Sílvia; Flores, Cristina Varela; Lopes, Teresa Teixeira; Moura, Isabel Bastos; Correia, Cristina Belo; Saraiva, MargaridaA “comida de rua”/ street food é uma importante componente do sistema de distribuição de alimentos em muitas cidades. No entanto, alimentos expostos para venda na rua estão geralmente associados a condições ambientais e estruturais que favorecem a sua potencial contaminação microbiológica. Neste estudo, foi avaliada a qualidade microbiológica de 118 alimentos prontos para consumo, vendidos na rua, em instalaçõe...
Hygiene challenges in Foodservice Units: Biocide efficacy and bacterial diversi...
Peixoto, Andreia; Santos, Susana; Rodrigues, João; Saraiva, Margarida; Correia, Cristina Belo; Batista, Rita; Novais, Carla; Antunes, PatríciaContaminated surfaces in food-processing environments represent a significant food safety risk, making the monitoring of hygiene on hands and food-contact surfaces a priority. This study aimed to assess the occurrence and diversity of hygiene indicator bacteria in Portuguese foodservice facilities and to evaluate their association with biocide use. A total of 1,128 hand and surface samples were collected from 1...
Preliminary characterization of Vibrio cholerae strains isolated from seafood s...
Lopes, Teresa; Lopes, David; Moura, Isabel Bastos; Sousa, Isabel; Rodrigues, João; Fernandes, Camila; Barreira, Maria João; Maia, CarlaVibrio cholerae, a natural inhabitant of aquatic ecosystems, has been related with gastrointestinal infections, particularly those associated with seafood consumption. This preliminary study aimed to evaluate the presence and characteristics of Vibrio cholerae, in seafood marketed in Portugal, given its potential role as a foodborne pathogen. Thus, the occurrence of Vibrio cholerae in 129 seafood raw samples (1...
Genomic diversity of Enterobacteriaceae on food-processing surfaces: an overloo...
Peixoto, Andreia; Nova, Lúcia; Mourão, Joana; Matos, Cátia; Santos, Susana; Rodrigues, João; Saraiva, Margarida; Correia, Cristina Belo; Batista, RitaBacterial hazards on contaminated surfaces in food-processing environments pose significant food safety risks. Hygiene monitoring of surfaces in direct or indirect contact with food typically relies on a limited set of bacterial indicators, such as Enterobacteriaceae counts. However, their genomic diversity remains poorly characterised. The aim of this study was to provide a comprehensive genomic characterisati...
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...
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...
LDPE and PLA Active Food Packaging Incorporated with Lemon by-Products Extract:...
Andrade, Mariana A.; Barbosa, Cássia H.; Mariño-Cortegoso, Sandra; Barbosa-Pereira, Letricia; Sendón, Raquel; Buonocore, Giovanna G.Low-density polyethylene-based packaging with 4% lemon extract (LDPE/4LE) and two polylactic-based (PLA) packaging materials with 4% and 6% lemon extract (PLA/PEG/4LE and PLA/6LE) were produced. O2 and water permeability tests were performed, the total and individual phenolic compounds content were measured, and the films' antioxidant activities were determined. The films' ability to delay lipid oxidation was t...
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...