Mitigation of methane emissions from slurry
In pig farming, methane (CH4) emissions from manure management account for up to 80% of total farmgate greenhouse gases. Methane, a potent  greenhouse with 28 times higher global warming potential than carbon dioxide, is a key contributor to climate change. CH4 mitigation strategies include chemical additives to inhibit methanogenic microbial activity in manure which raise additional environmental concerns. Hence, a novel manure treatment driven by the biological conversion of glycerol by Limosilactobacillus reuteri was examined for CH4 mitigation in pig slurry storage. The in-situ production of reuterin, a broad-spectrum antimicrobial agent, was able to reduce CH4 emissions by up to 95% in  pig slurries experiments. Ammonia emissions were also reduced. Hence, the microbial conversion of glycerol by L. reuteri holds promise as a biological slurry treatment in agriculture to mitigate climate change.