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| Registros recuperados: 14 | |
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| Silva,Franceli da; Santos,Ricardo Henrique Silva; Andrade,Nélio José de; Barbosa,Luiz Cláudio Almeida; Casali,Vicente Wagner Dias; Lima,Renato Ribeiro de; Passarinho,Ricardo Vaz de Melo. |
| Fresh basil (Ocimum basilicum L.) is used in food, phytotherapic industry, and in traditional therapeutic, due to its essential oil content and composition. Nevertheless basil can not be kept for long periods after harvest and its quality can be reduced. This work aimed to assess the influence of the season and harvest time in the postharvest conservation of basil stored for different periods. Basil was harvested at 8 am and 4 pm both in August/1999 and January/2000. Cuttings were conditioned in PVC packages and stored for 3, 6, and 9 days. During storage, chlorophyll content, essential oil content and composition were determined as well as microbiological analyses were carried out. Harvest season and the days of storage influenced the final content of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ocimum basilicum; Eugenol; Linalool; Chlorophyll; Mold; Yeast. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000400002 |
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| Simm,Erny Marcelo; Andrade,Nélio José de; Mendonça,Regina Célia Santos; Passos,Frederico José Vieira; Chaves,José Benício Paes. |
| Adhesion of organic substances and microorganisms on stainless steel surface was evaluated. The log RLU measurement was affected at a lower or higher degree, by type or concentration of the organic substances (casein, lipid, sucrose and their combinations) adhered to surface. However, if the samples analyzed were from the food processing surfaces, they would have been considered to be under satisfactory hygienic conditions with log RLU < 2.18 (< 150 RLU). The log RLU measurements of Staphylococcus carnosus-adhered surfaces, combined with or without the organic substances, were higher (p<0.05) than those of the Bacillus subtilis spores-adhered surface, regardless of the concentration. The samples taken from the surfaces adhered with the casein,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hygiene monitoring; ATP-bioluminescence measurement; Adhesion on stainless steel. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300020 |
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| Galinari,Éder; Nóbrega,Juliana Escarião da; Andrade,Nélio José de; Ferreira,Célia Lúcia de Luces Fortes. |
| The artisanal Minas cheese is produced from raw cow's milk and wooden utensils were employed in its manufacture, which were replaced by other materials at the request of local laws. This substitution caused changes in the traditional characteristics of cheese. Due to the absence of scientific studies indicating the microbial composition of biofilms formed on wooden forms, tables and shelves used in these cheese production, the present work evaluated the counts of Staphylococcus aureus, Escherichia coli, coliforms at 32 °C, yeasts, presumptive mesophilic Lactobacillus spp. and Lactococcus spp. in these biofilms, milk, whey endogenous culture and ripened cheese in two traditional regions: Serro and Serra da Canastra. Also, we checked for the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofilm; Artisanal minas cheese; Lactic acid bacteria; Serro; Serra da Canastra. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200047 |
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| Silva,Cleuber Antonio de Sá; Andrade,Nélio José de; Soares,Nilda de Fátima Ferreira; Ferreira,Sukarno Olavo. |
| Efficiency of ultraviolet (UV) radiation in reducing the cell number of Staphylococcus aureus ATCC 25923 and Escherichia coli K-12 adhered to low-density polyethylene (LDPE) films was evaluated. The microorganisms were let to adhere to the surface of LPDE bags for 12h at 18ºC, and then submitted to UV radiation at an intensity 196 µW.cm-2, 254nm, for 2 seconds. Staphylococcus aureus was less resistant to UV radiation than E. coli, and the efficiency increased with the increase of the concentration of microbial suspension. After 1500 hours of use the UV radiation intensity of the lamp was reduced from 288 to 78 µW.cm-2, and the higher decrease occurred in the first 100 hours of use. Also, the efficiency of the UV radiation decreased after 1500 hours of use.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial adhesion; Ultraviolet radiation; Low-density polyethylene; Atomic force microscopy. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000200017 |
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| Nero,Luís Augusto; Mattos,Marcos Rodrigues de; Beloti,Vanerli; Barros,Marcia A.F.; Netto,Daisy Pontes; Pinto,José Paes A.N.; Andrade,Nélio José de; Silva,Wladimir P.; Franco,Bernadette D.G.M.. |
| Fluctuations in the Brazilian milk market force small milk producers to find temporary trade alternatives, which include selling raw milk to people who prefer this type of milk rather than heat-processed milk. Considering the importance of these small milk producers to the market and the well-known health risks associated to consumption of raw milk, this study evaluated the microbiological quality and the presence of Listeria monocytogenes, Salmonella spp., chlorine, antimicrobials and insecticides (organophosphates and carbamates) in raw milk produced in 210 small and medium farms located in four important milk-producing Brazilian states (Paraná, São Paulo, Minas Gerais and Rio Grande do Sul). In 66% of the selected farms the milking was manual. In 33% of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hazards; Raw milk; Salmonella; Listeria monocytogenes; Hygiene indicators; Insecticides; Antimicrobials. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000200007 |
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| Pires,Ana Clarissa dos Santos; Soares,Nilda de Fátima Ferreira; Andrade,Nélio José de; Silva,Luis Henrique Mendes da; Camilloto,Geany Peruch; Bernardes,Patrícia Campos. |
| There is an increasing tendency to add natural antimicrobials of plant origin into food. The objective of this work was to develop a microbial sachet incorporated with allyl isothiocyanate (AIT), a volatile compound of plant origin, and to test its efficiency against growth of yeasts and molds, Staphylococcus sp. and psychrotrophic bacteria on sliced mozzarella cheese. Another objective was to quantify the concentration of AIT in the headspace of cheese packaging. A reduction of 3.6 log cycles was observed in yeasts and molds counts in the mozzarella packed with the antimicrobial sachet over 15-day storage time. The sachet also showed an antibacterial effect on Staphylococcus sp., reducing 2.4 log cycles after 12-day storage. Psychrotrophic bacteria... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial sachet; Mozzarella cheese; Food protection; Allyl isothiocyanate. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000400036 |
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| Bernardes,Patrícia Campos; Araújo,Emiliane Andrade; Pires,Ana Clarissa dos Santos; Fialho Júnior,José Felício Queiroz; Lelis,Carini Aparecida; Andrade,Nélio José de. |
| The adhesion of the solids presents in food can difficult the process of surface cleaning and promotes the bacterial adhesion process and can trigger health problems. In our study, we used UHT whole milk, chocolate based milk and infant formula to evaluate the adhesion of Enterobacter sakazakii on stainless steel coupons, and we determine the work of adhesion by measuring the contact angle as well as measured the interfacial tension of the samples. Inaddition we evaluated the hydrophobicity of stainless steel after pre-conditioning with milk samples mentioned. E. sakazakii was able to adhere to stainless steel in large numbers in the presence of dairy products. The chocolate based milk obtained the lower contact angle with stainless steel surface, higher... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enterobacter sakazakii; Hydrophobicity; Adhesion work; Interfacial tension; Dairy products. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400004 |
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| Alves,Roberta Barbosa Teodoro; Andrade,Nélio José de; Fontes,Edimar Aparecida Filomeno; Bernardes,Patrícia Campos; Carvalho,Antônio Fernandes de. |
| ABSTRACT The objective of this study was to evaluate the quality of water purification system and identify the bacteria this system, predict bacterial adherence according to the hydrophobicity of these microorganisms and of the polypropylene distribution loop for purified water. The assessment of drinking water that supplies the purification system allowed good-quality physical, chemical, and microbiological specifications. The physicochemical specifications of the distributed purified water were approved, but the heterotrophic bacteria count was higher than allowed (>2 log CFU mL-1).The sanitation of the storage tank with chlorine decreased the number of bacteria adhered to the surface (4.34 cycles log). By sequencing of the 16SrDNA genes, six species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Purified water/quality; Purified water/adhesion; Purified water/bacterial biodiversity; Prediction thermodynamics; Hydrophobicity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200606 |
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| Andrade,Nélio José de; Silva,Rosália Maria Moreira da; Brabes,Kelly Cristina Silva. |
| O presente trabalho é referente a 17 visitas técnicas realizadas em 12 unidades de alimentação e nutrição, cujas produções variam de 1.000 a 4.000 refeições/dia. Foram avaliadas as microbiotas do ar de 63 ambientes diferentes de processamento, as das mãos de 68 manipuladores e as das superfícies de 36 equipamentos e utensílios. Considerando a recomendação da American Public Health Association (APHA), de 30 UFC/cm2/semana, apenas 18,5% e 32,8% dos ambientes avaliados encontravam-se adequadamente higienizados, em relação ao número de microrganismos aeróbios mesófilos e de fungos filamentosos e leveduras, respectivamente. Para os manipuladores, foram previamente definidas as seguintes faixas de contagens microbianas: até 100; entre 101 e 1.000; entre 1.001 e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avaliação microbiológica; Restaurantes industriais; Ambientes; Manipuladores e equipamentos. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542003000300014 |
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| Registros recuperados: 14 | |
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