Gases and volatile compounds associated with micro-organisms in blown pack spoilage of Brazilian vacuum-packed beef

Autor(es)

Hernandez-Macedo, M. L. ^[1] ; Contreras-Castillo, C. J. ^[1] ; Tsai, S. M. ^[2] ; Da Cruz, S. H. ^[1] ; Sarantopoulos, C. I. G. L. ^[3] ; Padula, M. ^[3] ; Dias, C. T. S. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, ESALQ, Dept Agroind Alimentos & Nutr, Sao Paulo - Brazil

^[2] Univ Sao Paulo, CENA, Sao Paulo - Brazil

^[3] Ctr Tecnol Embalagem, Inst Tecnol Alimentos, Sao Paulo - Brazil

^[4] Univ Sao Paulo, ESALQ, Dept Ciencias Exatas, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Letters in Applied Microbiology; v. 55, n. 6, p. 467-475, DEC 2012.
• Citações Web of Science: 26

Resumo

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. (AU)

• Processo FAPESP: 07/58815-9 - Deteccao por arisa e t-rflp de contaminantes de carnes refrigeradas embaladas a vacuo.
• Beneficiário: Maria Lucila Hernández Macedo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 08/58622-9 - Identificação e análise da comunidade de microrganismos contaminantes de carnes refrigeradas embaladas a vácuo
• Beneficiário: Carmen Josefina Contreras Castillo
• Modalidade de apoio: Auxílio à Pesquisa - Regular