Removal and reduction of chromium by Pseudomonas spp. and their correlation to rhamnolipid production

► Cr(VI) reduction ability of the bacteria was not related to chromium removal. ► There is positive correlation between chromium removal and rhamnolipid production. ► There is a negative correlation between chromium toxicity and chromium removal. ► Exposure to chromium increases the yields of rhamnolipid produced by two Pseudomonas isolates.