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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Análise comparativa entre elfa elisa utilizando bacteriófago recombinante e outros métodos diagnósticos para detecção de salmonella spp. em produtos de origem animal / comparative analysis between Alfa Elisa using recombinant bacteriophage and other diagnostic methods for Salmonella Spp. detection in products of animal origin

Gava, Felipe 27 February 2012 (has links)
Made available in DSpace on 2016-12-08T16:24:07Z (GMT). No. of bitstreams: 1 PGCA12MA056.pdf: 526904 bytes, checksum: 7a4c82b6cb16c016c29f0182cfbbaa51 (MD5) Previous issue date: 2012-02-27 / The analysis methods for Salmonella spp. detection are of great importance in the system of animal products processing industries, because they reflect directly on the microbiological quality of food, impacting the storage time and therefore the release of the product for sale. The present study verified the efficiency of a new ELFA ELISA test using a recombinant protein from bacteriophage (VIDAS UP®) to detect the presence of Salmonella spp. in products of animal origin. Two hundred fifteen samples (15 samples artificially contaminated and 200 samples from agribusiness routine), from different products of animal origin were analyzed. The samples were tested by five methods of diagnosis: ELFA ELISA, conventional methodology in accordance with ISO 6579, polymerase chain reaction - PCR, semi-solid Rappaport-Vassiliadis Modified - MSRV and MSRV medium + supplement. Eleven out of 215 (5.12%) samples were positive in at least one test, which four samples were from agribusiness routine and seven were from artificially contaminated samples. The sensitivity and specificity of the ELFA ELISA when compared with the conventional method was 90.0% and 99.51% respectively. The ELFA ELISA was equivalent to the other methodologies, showing to be effective and rapid to detect Salmonella spp. in different products of animal origin / Os métodos de análise para detecção de Salmonella spp. são de grande importância no processo da agroindústria de produtos de origem animal, pois refletem diretamente na qualidade microbiológica dos alimentos, impactando no tempo de estocagem e por conseguinte na liberação do produto para venda. O presente trabalho verificou a eficiência de um novo teste ELFA ELISA utilizando proteína recombinante oriunda de bacteriófago (VIDAS UP®) para detectar a presença de Salmonella spp. em produtos de origem animal. Foram analisadas 215 amostras (15 amostras artificilamente contaminadas e 200 amostras de rotina da agroindústria), de diferentes produtos de origem animal. As amostras foram submetidas a cinco métodos de diagnóstico: ELFA ELISA, metodologia convencional de acordo com ISO 6579, reação em cadeia da polimerase - PCR, meio semi-sólido Rappaport-Vassiliadis Modificado - MSRV e meio MSRV + suplemento. Onze amostras das 215 (5,12%) foram positivas em pelo menos um dos testes, sendo quatro amostras de rotina da agroindústria e sete amostras artificialmente contaminadas. A sensibilidade e especificidade do teste ELFA ELISA com a metodologia convencional foi de 90,0% e 99,51%, respectivamente. O teste ELFA ELISA apresentou equivalência com as demais metodologias, mostrando ser eficaz e rápido na detecção de Salmonella spp. em diferentes produtos de origem animal

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