Role of dissolved oxygen availability on lactobionic acid production from whey by Pseudomonas taetrolens

► Dissolved oxygen has been found to play a key role in bioprocess efficiency. ► Increase in agitation rate improved growth of Pseudomonas taetrolens. ► Lactobionic acid production from whey was negatively affected by high aeration rates. ► High oxygen supply conditions increased pH-shift values and oxygen consumption. ► Short oxygen-limited period improved performance under high-cell density conditions.