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Lett Appl Microbiol

Title:		Gases and volatile compounds associated with micro-organisms in blown pack spoilage of Brazilian vacuum-packed beef
Author(s):		Hernandez-Macedo ML; Contreras-Castillo CJ; Tsai SM; Da Cruz SH; Sarantopoulos CI; Padula M; Dias CT;
Address:		"Departamento de Agroindustria, Alimentos e Nutricao, ESALQ, Universidade de Sao Paulo, Sao Paulo, Brazil. Centro de Energia Nuclear na Agricultura, CENA, Universidade de Sao Paulo, Sao Paulo, Brazil. Centro de Tecnologia de Embalagem, Instituto de Tecnologia de Alimentos, Sao Paulo, Brazil. Departamento de Ciencias Exatas, ESALQ, Universidade de Sao Paulo, Sao Paulo, Brazil"
Journal Title:		Lett Appl Microbiol
Year:		2012
Volume:		20121026
Issue:		6
Page Number:		467 - 475
DOI:		10.1111/lam.12004
ISSN/ISBN:		1472-765X (Electronic) 0266-8254 (Linking)
Abstract:		"This study correlated the composition of the spoilage bacterial flora with the main gaseous and volatile organic compounds (VOCs) found in the package headspace of spoiled, chilled, vacuum-packed meat. Fifteen chilled, vacuum-packed beef samples, suffering from blown pack spoilage, were studied using 16S rRNA clone sequencing. More than 50% of the bacteria were identified as lactic acid bacteria (LAB), followed by clostridia and enterobacteria. Fifty-one volatile compounds were detected in the spoiled samples. Although the major spoilage compounds were identified as alcohols and aldehydes, CO2 was identified as the major gas in the spoiled samples by headspace technique. Different species of bacteria contribute to different volatile compounds during meat spoilage. LAB played an important role in blown pack deterioration of the Brazilian beef studied. SIGNIFICANCE AND IMPACT OF THE STUDY: The data generated by this study provided useful information to correlate the microbial contamination of Enterobacteriaceae, lactic acid bacteria and Clostridium with the VOC and gaseous compound production to define, in a faster manner, not only the type of contamination, but also to prevent it"
Keywords:		"Animals Bacterial Typing Techniques Base Sequence Brazil Cattle Clostridium/classification/genetics/isolation & purification DNA, Bacterial/genetics Enterobacteriaceae/classification/genetics/isolation & purification Food Contamination/*analysis *Food Pac;"
Notes:		"MedlineHernandez-Macedo, M L Contreras-Castillo, C J Tsai, S M Da Cruz, S H Sarantopoulos, C I G L Padula, M Dias, C T S eng Research Support, Non-U.S. Gov't England 2012/10/02 Lett Appl Microbiol. 2012 Dec; 55(6):467-75. doi: 10.1111/lam.12004. Epub 2012 Oct 26"