Microbial Decomposition of Methionine and Identity of the Resulting Sulfur Products1

AUTOR(ES)

Segal, William

RESUMO

Various bacteria, actinomycetes, and filamentous fungi decomposed methionine, but only certain aerobic bacteria isolated from soil decomposed it in the absence of other organic substrates. These bacteria could grow on methionine as the only organic substrate and source of nitrogen and sulfur. Methionine was first deaminated and then demethiolated with production of methanethiol, part of which was oxidized to dimethyl disulfide. The amount of methanethiol that was oxidized varied with different cultures. A bacterial culture initially unable to grow on methionine developed capacity to do this in a medium which contained methionine and other growth substrates. The two sulfur products, methanethiol and dimethyl disulfide, are volatile and escaped from the media, resulting in a decrease in the sulfur content proportional to the amount of methionine decomposed.

Documentos Relacionados

• Salmonellae Associated with Further-processed Turkey Products1
• Fungal Metabolites as Indicators of Quality of Tomato Products1
• NUTRITION OF THE HETEROFERMENTATIVE LACTOBACILLI THAT CAUSE GREENING OF CURED MEAT PRODUCTS1
• Role of Curing Agents in the Preservation of Shelf-stable Canned Meat Products1
• Comparison of Boric Acid and Lactose Broths for the Isolation of Escherichia coli from Citrus Products1