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| Registros recuperados: 258 | |
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| Baker,C.M.; Chitrakar,R.; Obulareddy,N.; Panchal,S.; Williams,P.; Melotto,M.. |
| The phyllosphere, i.e., the aerial parts of the plant, provides one of the most important niches for microbial colonization. This niche supports the survival and, often, proliferation of microbes such as fungi and bacteria with diverse lifestyles including epiphytes, saprophytes, and pathogens. Although most microbes may complete the life cycle on the leaf surface, pathogens must enter the leaf and multiply aggressively in the leaf interior. Natural surface openings, such as stomata, are important entry sites for bacteria. Stomata are known for their vital role in water transpiration and gas exchange between the plant and the environment that is essential for plant growth. Recent studies have shown that stomata can also play an active role in limiting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Guard cell; Plant innate immunity; Plant hormones; Bacterial pathogenesis; Food safety. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000800001 |
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| Silva,Elaine Nóbrega Gibson; Figueiredo,Ana Cláudia Leite; Miranda,Fernanda Araújo; Almeida,Rogeria Comastri de Castro. |
| The purpose of this study was to determine the effect of bacteriophage P100 on strains of Listeria monocytogenes in artificially inoculated soft cheeses. A mix of L. monocytogenes 1/2a and Scott A was inoculated in Minas Frescal and Coalho cheeses (approximately 10(5) cfu/g) with the bacteriophage added thereafter (8.3 x 10(7) PFU/g). Samples were analyzed immediately, and then stored at 10 ºC for seven days. At time zero, 30 min post-infection, the bacteriophage P100 reduced L. monocytogenes counts by 2.3 log units in Minas Frescal cheese and by 2.1 log units in Coalho cheese, compared to controls without bacteriophage. However, in samples stored under refrigeration for seven days, the bacteriophage P100 was only weakly antilisterial, with the lowest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food safety; Listeria; Biocontrol; Bacteriophage; Cheese. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100003 |
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| Taban,Birce Mercanoglu; Aytac,Sait Aykut; Akkoc,Nefise; Akcelik,Mustafa. |
| In the last decade, ready-to-eat (RTE) salad vegetables are gaining increasing importance in human diet. However, since they are consumed fresh, inadequate washing during processing can bring on some foodborne illnesses, like salmonellosis, since these food items have natural contamination from soil and water. During 2009-2010, a total of 81 samples were purchased arbitrarily from local markets in Ankara, and were examined for Salmonella contamination. Salmonella screening was performed by using anti-Salmonella magnetic beads system and polymerase chain reaction (PCR) identification of the suspected colonies. Then, the antibiotic resistance profiles of four Salmonella strains identified (strains RTE-1, RTE-2, RTE-3, and RTE-4) were also investigated, since... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Contamination; Plasmid-mediated sulfonamide resistance; Ready-to-eat salad vegetables; Food safety; Salmonella. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200007 |
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| Rodrigues,Carla Susana; Sá,Cláudia Valéria Gonçalves Cordeiro de; Melo,Cristiano Barros de. |
| ABSTRACT: Listeria monocytogenes is a relevant foodborne pathogen in public health, responsible for outbreaks of listeriosis often associated to the consumption of ready to eat meat, dairy and fishery products. Listeriosis is a serious disease that can lead to death and mainly affect children, the elderly and immunocompromised individuals. In pregnant women causes abortion or neonatal listeriosis. In Brazil, ready to eat food are appreciated and increasingly consumed by the population. Furthermore, products such as sausages, bologna, hams and cheeses have characteristics such as pH, Aw and sodium chloride content that favor the development of L. monocytogenes during their shelf life. The purpose of this paper was to present an overview of L. monocytogenes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food safety; Ready to eat; Contamination; Listeriosis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200452 |
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| Hachiya,Jamile de Oliveira; Rossi,Gabriel Augusto Marques; Ribeiro,Laryssa Freitas; Sato,Rafael Akira; Silva,Higor Oliveira; Vidal,Ana Maria Centola; Amaral,Luiz Augusto do. |
| ABSTRACT: This study focused on counting Staphylococcus spp. in curd cheeses “requeijão” and “especialidade láctea type requeijão” sold in Brazil, assessing the presence of mecA gene in obtained isolates and establishing antimicrobial resistance profile of the mecA gene positive isolates. To this, a set of 200 samples of these dairy products were evaluated. Low counts of Staphylococcus spp. were observed in these dairy products. All the isolates were determined as coagulase-negative strains using coagulase test and PCR. However, two isolates (3.70%) were carriers of mecA gene and they can be considered as risk for public health. These isolates presented resistance to penicillin, oxacillin and erythromycin. In conclusion, low counts of Staphylococcus were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial resistance; Cheese; Food safety; MRS; Staphylococcus spp. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700451 |
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| Schlemper,Valfredo; Sachet,Ana Paula. |
| ABSTRACT: The treatment of dairy cattle with antibiotics may lead to milk contamination by drugs residues, which represents risks to human health. This study aimed to investigate the presence of antibiotic residues in milk, produced and marketed in Capanema microregion, Paraná, Brazil, through the analysis of pasteurized milk samples from different brands consumed by the local population and unpasteurized milk samples provided by a dairy industry. Enzyme immunoassays screening kits SNAPduo™ Beta-Tetra ST Test (Idexx Laboratories) were used, which verified the presence of β-lactam and tetracyclic drugs residues, as well as enzyme immunoassays screening kits Charm ROSA Test (Charm Sciences), which established the presence of quinolones and sulfonamides... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibiotic; Milk quality; Public health; Food safety; Pasteurization. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200451 |
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| Schardong,Igor Sulzbacher; Freiberg,Joice Aline; Santana,Natielo Almeida; Richards,Neila Silvia Pereira dos Santos. |
| ABSTRACT: It is estimated that by 2050 the world population will be 9 billion people; and therefore, the need for alternative sources of protein is inevitable, since conventional sources, such as beef, pork and poultry, will not be sufficient to meet the demand of population growth. Food that includes alternative sources of protein, such as insects, is a reality in countries of Latin America, Asia, Australia, Europe and Africa. This research presents the results of an exploratory study that analysed the food profile of 1,619 consumers in the five Brazilian regions (North, Northeast, Midwest, Southeast and South) as well as their perception, motivation and preferred form of edible insects. The data were analysed by cross-tabulation and expressed as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Entomophagy; Food preference; Food profile; Food safety; Neophobia. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001000752 |
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| Medeiros,Flávio Henrique Vasconcelos de; Martins,Samuel Julio; Zucchi,Tiago Domingues; Melo,Itamar Soares de; Batista,Luis Roberto; Machado,José da Cruz. |
| Mycotoxins are produced by the secondary metabolism of many fungi and can be found in almost 25% of the world's agricultural commodities. These compounds are toxic to humans, animals, and plants and therefore, efforts should be made to avoid mycotoxin contamination in food and feed. Besides, up to 25% of all harvested fruits and vegetables are lost due to storage molds and/or mycotoxin contamination and many methods have been applied to mitigate these issues, but most of them rely on the use of fungicides. Although chemicals are often the first defensive line against mycotoxigenic fungi, the indiscriminate use of fungicides are awakening the public perception due to their noxious effects on the environment and human/animal health. Thus, there is an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biocontrol; Microbial antagonists; Postharvest decay; Food safety. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000500001 |
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| Guimarães,Ívina Catarina de Oliveira; Pereira,Joelma; Cornélio,Vanda Maria de Oliveira; Batista,Luís Roberto; Ferreira,Eric Batista. |
| Owing to its chemical composition and production chain, rice is susceptible to contamination by fungi. Among other techniques, the application of gamma radiation has been suggested as a method to ensure food safety. However, such radiation can alter the chemical composition of the food. Thus, the objective of the present work is to evaluate the centesimal composition, caloric value, pH, total titratable acidity, and coloration of polished white rice subjected to different doses of Co60 gamma radiation (0 kGy, 6.5 kGy, and 7.5 kGy). The results demonstrated that while gamma radiation did not cause significant alterations in the centesimal composition, caloric value, and titratable acidity of the rice, increasing doses substantially decreased the pH and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food irradiation; Food properties; Food safety. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000200010 |
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| Registros recuperados: 258 | |
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