Xanthomonas campestris strain selection for xanthan production from olive mill wastewaters

Four Xanthomonas campestris strains were tested in olive mill wastewaters (OMW) for xanthan production. Differences among strains were found in the range of tolerance to OMW concentration and xanthan amount obtained. X. campestris NRRL B-1459 S4LII was chosen by its capability for xanthan production from 50–60% OMW as the sole nutrient source.