Reinventing Industrial Fermentations with Tailored Microbial Consortia

Transitioning industrial fermentation processes toward more sustainable and circular models requires innovative strategies that maximize the valorisation of agro-industrial wastes and side streams. In this context, tailored microbial consortia offer a promising solution to overcome bottlenecks associated to the bioconversion of complex lignocellulosic feedstocks. Combining species with complementary metabolic capabilities can significantly enhance the production of value-added biofuels and biochemicals. For example, bacterial co-cultures have proven effective for producing 2,3-butanediol and acetoin from brewer’s spent grain hydrolysates by coupling detoxification with improved sugar utilization. Likewise, yeast co-culture enabled efficient co-fermentation of pentoses and hexoses from sugarcane bagasse, addressing the challenge of full sugar conversion without relying on genetically modified organisms. Together, these advances show how designing synergistic consortia tailored to specific industrial conditions can boost yields, enhance process robustness, and support the development of circular biorefineries.