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Int J Food Microbiol

Title:		"Microbial, sensory and volatile changes during the anaerobic cold storage of morcilla de Burgos previously inoculated with Weissella viridescens and Leuconostoc mesenteroides"
Author(s):		Diez AM; Bjorkroth J; Jaime I; Rovira J;
Address:		"Department of Biotechnology and Food Science, University of Burgos, Plaza Misael Banuelos s/n, 09001 Burgos, Spain"
Journal Title:		Int J Food Microbiol
Year:		2009
Volume:		20090228
Issue:		2-Mar
Page Number:		168 - 177
DOI:		10.1016/j.ijfoodmicro.2009.02.019
ISSN/ISBN:		1879-3460 (Electronic) 0168-1605 (Linking)
Abstract:		"Blood sausage, a widely consumed traditional product, would benefit from an increased commercial life. It is therefore pertinent to investigate the type, the evolution, and the behaviour of the Lactic Acid Bacteria responsible for their spoilage. This study aims to clarify the role played by Weissella viridescens and Leuconostoc mesenteroides, identified as their principal spoilage agents in vacuum-packaged morcilla de Burgos, through the study of microbiological, sensory, and volatile profile changes, following inoculation of the morcilla, both jointly and separately, with the two species. L. mesenteroides grew more rapidly and influenced the drop in pH, milky exudates and the sour smell, whereas W. viridescens influenced vacuum loss. With respect to volatile profiles, L. mesenteroides samples were richer in aldehydes (hexanal) and acids (acetic), on the contrary W. viridescens samples showed greater amounts of alcohols (ethanol) and ketones (acetoin and diacetyl). Both species inoculated together increased particular signs of morcilla spoilage"
Keywords:		"Animals Colony Count, Microbial DNA, Ribosomal/*genetics Exudates and Transudates *Food Microbiology *Frozen Foods Hydrogen-Ion Concentration *Lactobacillus/chemistry/isolation & purification/metabolism *Leuconostoc/chemistry/isolation & purification/meta;"
Notes:		"MedlineDiez, Ana M Bjorkroth, Johanna Jaime, Isabel Rovira, Jordi eng Research Support, Non-U.S. Gov't Netherlands 2009/03/25 Int J Food Microbiol. 2009 May 31; 131(2-3):168-77. doi: 10.1016/j.ijfoodmicro.2009.02.019. Epub 2009 Feb 28"