Marshall, Valerie M., Laws, Andrew P., Gu, Y., Levander, F., Radstrom, P., De Vuyst, Luc, Degeest, B., Vaningelgem, Frederik, Dunn, H. and Elvin, M. (2001) Exopolysaccharide-producing strains of thermophilic lactic acid bacteria cluster into groups according to their EPS structure. Letters in Applied Microbiology, 32 (6). pp. 433-435. ISSN 02668254Metadata only available from this repository.
Aims: To compare galactose-negative strains of Streptococcus thermophilus and Lactobacillus delbrueckii subspecies bulgaricus isolated from fermented milk products and known to produce exopolysaccharides (EPSs).
Methods and Results: The structures of the EPSs were determined using nuclear magnetic resonance (NMR) and their genetic relationships determined using restriction endonuclease analysis (REA) and random amplification of polymorphic DNA (RAPD). Similar groupings were apparent by REA and RAPD, and each group produced an EPS with a particular subunit structure.
Conclusions: Although none of the strains assimilated galactose, all inserted a high proportion of galactose into their EPS when grown in skimmed milk, and fell into three distinct groups.
Significance and Impact of the Study: This information should help in an understanding of genetic exchanges in lactic acid bacteria.
|Subjects:||Q Science > Q Science (General)|
Q Science > QD Chemistry
|Schools:||School of Applied Sciences|
School of Applied Sciences > Biomolecular Sciences Research Centre
|Depositing User:||Sara Taylor|
|Date Deposited:||16 Oct 2008 16:35|
|Last Modified:||13 Oct 2010 13:45|
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