62 documents found, page 1 of 7
Phenolic Compounds from Pyrus communis Residues: Mechanisms of Antibacterial Ac...
Ribeiro, Jessica; Silva, Vanessa; Igrejas, Gilberto; Barros, Lillian; Heleno, Sandrina A.; Reis, Filipa S.; Poeta, PatríciaThe food industry produces substantial amounts of fruit byproducts, which are often discarded despite their high content of bioactive compounds with potential therapeutic applications. Pyrus communis (pear) residues, which are particularly rich in phenolic compounds, represent a valuable yet underutilized resource. These byproducts have demonstrated significant antioxidant and antibacterial properties, suggesti...
From Apple Waste to Antimicrobial Solutions: A Review of Phenolics from PGI ‘Ma...
Ribeiro, Jessica; Silva, Vanessa; Dapkevicius, Maria de Lurdes N. E.; Igrejas, Gilberto; Barros, Lillian; Heleno, Sandrina A.; Reis, Filipa S.Apple by-products represent a valuable source of phenolic compounds with significant antimicrobial potential, aligning with sustainable strategies for waste valorisation within the circular bioeconomy. This review focuses on the phenolic profile and antimicrobial relevance of ‘Maçã de Alcobaça,’ a Protected Geographical Indication (PGI) apple variety from Portugal. The main phenolics identified include phloridz...
Genomic Analysis of Antibiotic Resistance and Virulence Profiles in Escherichia...
Ribeiro, Jessica; Silva, Vanessa; Freitas, Catarina; Pinto, Pedro; Vieira-Pinto, Madalena; Batista, Rita; Nunes, Alexandra; Gomes, João PauloSternal bursitis is an underexplored lesion in poultry, often overlooked in microbiological diagnostics. In this study, we characterized 36 Escherichia coli isolates recovered from sternal bursitis in broiler chickens, combining phenotypic antimicrobial susceptibility testing, PCR-based screening, and whole genome sequencing (WGS). The genetic analysis revealed a diverse population spanning 15 sequence types, i...
Genetic Complexity of CC5 Isolates Associated with Sternal Bursitis in Chickens...
Silva, Vanessa; Ribeiro, Jessica; Teixeira, Pedro; Pinto, Pedro; Vieira-Pinto, Madalena; Poeta, Patrícia; Caniça, Manuela; Igrejas, GilbertoSternal bursitis, a common inflammatory condition in poultry, poses significant challenges to both animal welfare and public health. This study aimed to investigate the prevalence, antimicrobial resistance, and genetic characteristics of isolates associated with sternal bursitis in chickens. Ninety-eight samples were collected from affected chickens, and 24 isolates were identified. Antimicrobial susceptibility...
Resistome, Virulome, and Clonal Variation in Methicillin-Resistant (MRSA) in He...
Silva, Vanessa; Silva, Adriana; Barbero, Raquel; Romero, Mario; Del Campo, Rosa; Caniça, Manuela; Cordeiro, Rui; Igrejas, Gilberto; Poeta, PatriciaThis cross-sectional study investigates the methicillin-resistant (MRSA): its prevalence, antimicrobial resistance, and molecular characteristics in healthy swine populations in central Portugal. A total of 213 samples were collected from pigs on twelve farms, and MRSA prevalence was assessed using selective agar plates and confirmed via molecular methods. Antimicrobial susceptibility testing and whole genome s...
Listeria monocytogenes from Food Products and Food Associated Environments: Ant...
Silva, Adriana; Silva, Vanessa; Gomes, João Paulo; Coelho, Anabela; Batista, Rita; Saraiva, Cristina; Esteves, Alexandra; Martins, ÂngelaListeria monocytogenes, a foodborne pathogen, exhibits high adaptability to adverse environmental conditions and is common in the food industry, especially in ready-to-eat foods. L. monocytogenes strains pose food safety challenges due to their ability to form biofilms, increased resistance to disinfectants, and long-term persistence in the environment. The aim of this study was to evaluate the presence and gen...
Unveiling Antibiotic Resistance, Clonal Diversity, and Biofilm Formation in Iso...
Silva, Adriana; Silva, Vanessa; Dapkevicius, Maria de Lurdes Enes; Azevedo, Mónica; Cordeiro, Rui; Pereira, José Eduardo; Valentão, PatríciaEscherichia coli, a commensal microorganism found in the gastrointestinal tract of human and animal hosts, plays a central role in agriculture and public health. Global demand for animal products has promoted increased pig farming, leading to growing concerns about the prevalence of antibiotic-resistant E. coli strains in swine populations. It should be noted that a significant portion of antibiotics deployed i...
Comprehensive typing and genetic analysis of L. monocytogenes isolates: implica...
Silva, Adriana; Silva, Vanessa; Borges, Vítor; Coelho, Anabela; Batista, Rita; Esteves, Alexandra; Igrejas, Gilberto; Saraiva, CristinaListeria species are commonly found in various environments and contaminated food, with livestock serving as a significant source of foodborne pathogens. Among these species, Listeria monocytogenes (L. monocytogenes) is particularly noteworthy as it can affect both livestock and humans. Antibiotics are frequently used in food animals for disease treatment and prevention on a large scale. This practice can lead ...
Screening of chemical composition, antimicrobial and antioxidant activities in ...
Silva, Vanessa; Silva, Adriana; Ribeiro, Jessica; Aires, Alfredo; Carvalho, Rosa Paula; Amaral, Joana S.; Barros, Lillian; Igrejas, GilbertoAntimicrobial resistance is increasing globally and is now one of the major public health problems. Therefore, there is a need to search for new antimicrobial agents. The food industry generates large amounts of by-products that are rich in bioactive compounds, such as phenolic compounds, which are known to have several health benefits, including antioxidant and antimicrobial properties. Thus, we aimed to chara...
Antibiotic resistance among gastrointestinal bacteria in broilers: a review foc...
Ribeiro, Jessica; Silva, Vanessa; Monteiro, Andreia; Vieira-Pinto, Madalena; Igrejas, Gilberto; Reis, Filipa S.; Barros, Lillian; Poeta, PatríciaSimple Summary Chicken meat has become one of the most consumed meats worldwide, and antibiotics have been used to ensure high levels of production. However, antibiotic usage in animal production has contributed to the development of antibiotic-resistant bacteria, largely among intestinal microbiota. Enterococcus spp. and Escherichia coli are frequently found in the gastrointestinal tract of chickens, and the p...