Analysis and production of two exopolysaccharides from Lactococcus lactis subsp. cremoris LC330

Two polysaccharides produced concurrently by Lactococcus lactis subsp. cremoris strain LC330 have been identified. One had a high molecular mass (> 1 × 106 Da) and was neutral. The second was smaller (∼ 10000 Da), charged and had a high phosphorus content. Sugar composition also differed. In chem...

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Bibliographic Details
Published in:Journal of dairy research 1995-11, Vol.62 (4), p.621-628
Main Authors: Marshall, Valerie M., Cowie, Eoin N., Moreton, Rod S.
Format: Article
Language:English
Subjects:
Bacteriology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Metabolism. Enzymes
Microbiology
Original Articles
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Summary:Two polysaccharides produced concurrently by Lactococcus lactis subsp. cremoris strain LC330 have been identified. One had a high molecular mass (> 1 × 106 Da) and was neutral. The second was smaller (∼ 10000 Da), charged and had a high phosphorus content. Sugar composition also differed. In chemostat culture the neutral polysaccharide was influenced by temperature and by nitrogen limitation. This polysaccharide was branched with terminal galactose moieties and contained galactose, glucose and glucosamine. The phosphopolysaccharide was more complex with glucose, rhamnose, galactose and glucosamine in an approximate ratio of 6:5:4:1.
ISSN:0022-0299
1469-7629
DOI:10.1017/S0022029900031356