In this study, the formation of exopolysaccharides (EPS) of meat starter cultures was investigated. Two strains were selected and revealed to produce a complex heteropolysaccharide (HePS) and a dextran, respectively. While HePS formation involved a biosynthesis cluster comprising numerous genes, dextran was synthesized by an extracellular dextransucrase. Production and (macro-) molecular structure of the dextran were strongly influenced by cold- and salt stress, and incubation in sucrose containing medium resulted in differential expression of several proteins, including those of the fructose operon.
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In this study, the formation of exopolysaccharides (EPS) of meat starter cultures was investigated. Two strains were selected and revealed to produce a complex heteropolysaccharide (HePS) and a dextran, respectively. While HePS formation involved a biosynthesis cluster comprising numerous genes, dextran was synthesized by an extracellular dextransucrase. Production and (macro-) molecular structure of the dextran were strongly influenced by cold- and salt stress, and incubation in sucrose contain...
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