Plasmids, Lactic Acid Production, and N-Acetyl-d-Glucosamine Fermentation in Lactobacillus helveticus subsp. jugurti.
Two lactobacillus strains, Lactobacillus helveticus subsp. jugurti S13-8 and L. helveticus subsp. jugurti S36-2, were examined for the presence of plasmids. Plasmids of 16.45, 13.03, and 11.83 kilobases (kb) were found in the first, low lactic acid-producing strain; their function is not presently known. A single plasmid species of 13.17 kb was found in the second, high lactic acid-producing strain. This plasmid was found to be associated with lactic acid production and N-acetyl-d-glucosamine fermentation.
Smiley
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MB
Research Department, Nestlé Products Technical Assistance Co. Ltd., CH-1814, La Tour-de-Peilz, Switzerland.
Fryder
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