Process engineering towards an oxidative cellular state improves 3-hydroxypropionic acid production with Lentilactobacillus diolivorans

•Successful process engineering for improved 3-hydroxypropionic acid production.•Status of intracellular redox state influences 3-HP production of L. diolivorans.•With 67.7 g/L 3-HP, highest conc. reported for Lactobacillus spp. reached.•L. diolivorans is a versatile cell factory for platform chemical production.