AMSA Announces Symposium Speakers on Microbiome

Jul 16, 2020

NEW.2019.logoThe American Meat Science Association (AMSA) is pleased to announce, Dr. Johanna Björkroth and Dr. Stephan Schmitz-Esser will be the featured speakers in the concurrent symposium entitled “Microbiome” on Thursday, August 6, 2020 during the 66th International Congress of Meat Science and Technology (ICoMST) and the AMSA 73rd Reciprocal Meat Conference (RMC) exclusively virtual meeting. This session will be sponsored by Kemin Food Technologies. 

The featured presentations include: 

Johanna BjorkrothMicrobiomes in the context of meat spoilage: Meat spoilage is a complicated biological phenomenon taking place over the course of time. Several factors influence spoilage , mainly external factors related to packaging and storage temperature, but also internal factors related to contamination diversity and product ingredients. In this session, Dr. Johanna Björkroth, Professor of Food Hygiene at the University of Helsinki, will discuss the genomic studies of specific spoilage organisms (SSO) and investigations on spoilage microbiomes. Dr. Björkroth will also be providing information about the factors making a specific organism a competitive SSO and what the interactions are between certain SSO and the most active species and pathways in packaged raw meat. Studies have shown that spoilage microbiomes are diverse but certain aspects, like the oxygen content or added marinades shape this diversity strongly. Dr. Björkroth has also characterized a new spoilage-associated pathway, i.e. heme-dependent respiration capability, in Leuconostoc gelidum subsp. gasicomitatum. The microbiome studies 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 (LAB) 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. 

Stephan Schmitz-Esser ISU 2019 small -editThe rumen wall microbiota: Gatekeepers between the rumen content and the host tissue and their potential contributions to rumen wall integrity and animal health and performance: Ruminants are important for humans by producing milk and meat as major protein sources for human nutrition. Ruminants are characterized by their unique mode of digesting plants in their forestomach, the rumen. The rumen is densely populated by diverse microorganisms that are crucial for the breakdown of plant material, which cannot be degraded by the ruminant alone. This symbiosis of ruminants and their microbiota is essential for rumen function including energy harvest from otherwise indigestible plant material. Among the ruminal microbial communities, microorganisms in the rumen fluid or attached to feed particles have attracted considerable research interest. Still, comparatively less is known about the microorganisms attached to the rumen wall, also known as epimural bacteria or microbiota. Consequently, the metabolic function of the rumen wall microbiota is only partially understood, and also the overall community structure needs to be evaluated in more detail. Dr. Stephan Schmitz-Esser, Associate Professor at Iowa State University, will cover the area of livestock productivity, growth and/or disease resistance and their relationship with the gastrointestinal tract microbiota in this session. 

The 66th ICoMST and AMSA 73rd RMC will be held August 3-6, 2020 online in the virtual format. For more information please visit: www.icomst2020.com or contact Deidrea Mabry 1-800-517-AMSA ext. 12.  

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