These physical variations may be due to differences in molecular aggregation. Dextran produced by L. mesenteroides CMG713 was soluble in water giving a homogenous mixture of 5% solution, which was used for the analysis of the physical and chemical properties. Similar results have been reported for dextran produced by L. mesenteroides NRRL B512F that was also freely soluble in water, methyl sulfoxide, formamide, ethylene glycol and glycerol