2026-04-14T05:45:26Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4650802024-11-04T04:51:55Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Johansson, Per author Jääskeläinen, Elina author Nieminen, Timo author Hultman, Jenni author Auvinen, Petri author Björkroth, Katri Johanna author 2020 Meat spoilage is a complicated biological phenomenon taking place over the course of time. Several factors influence it, mainly external factors related to packaging and storage temperature but also internal ones related to contamination diversity and product ingredients. We conducted genomic studies of specific spoilage organisms (SSO) and investigated the spoilage microbiomes providing information about the factors that make a specific organism a competitive SSO, as well as the interactions between certain SSO and the most active species and pathways in packaged raw meat. Our studies showed that spoilage microbiomes are diverse, but certain aspects, such as oxygen content or added marinades, shape this diversity strongly. We have also characterized a new spoilage-associated pathway, i.e., heme-dependent respiration capability, in Leuconostoc gelidum subsp. gasicomitatum. The microbiome studies we conducted explain why this species has become a competitive SSO. It is a fast grower and gains advantage for its growth if oxygen is present in the packages. Since the contamination of psychrotrophic lactic acid bacteria is difficult to avoid in meat manufacture, leuconostocs cause spoilage problems from time to time especially in marinated products or those packaged under high-oxygen-containing atmospheres. http://hdl.handle.net/2072/465080 Modified atmosphere packaging Specific spoilage organism Meat spoilage Microbiome Microbiomes in the Context of Refrigerated Raw Meat Spoilage