Evidence for exopolysaccharide production by Oenococcus oeni strains isolated from non-ropy wines.

Aims: The aim of this study was to assess the exopolysaccharide (EPS) production capacities of various strains of Oenococcus oeni, including malolactic starters and strains recently isolated from wine.

Methods And Results: Fourteen O. oeni strains displaying or not (PCR check on genomic DNA) the gtf gene generally associated with beta-glucan formation and ropiness were grown on grape juice medium, dialysed MRS-derived medium or synthetic medium.