Brazilian scientists have successfully engineered a yeast strain to transform sugarcane waste into a valuable bio-based chemical—xylonic acid—used in food, pharmaceutical, and polymer industries. The collaborative research by the University of Brasília and Embrapa Agroenergia demonstrates a sustainable approach to converting agroindustrial residues into high-value products.
The study, published in Applied Biochemistry and Biotechnology (2025), reports the development of a genetically modified Komagataella phaffii strain capable of producing xylonic acid from xylose, including from sugarcane bagasse hydrolysate. The researchers evaluated glucose and glycerol as co-substrates in fermentation and found that glycerol, a biodiesel byproduct, significantly boosted production yields.
In controlled bioreactor conditions, the engineered strain achieved 55.11 g/L of xylonic acid with a productivity of 0.19 g/L·h, while fermentation using 10% sugarcane bagasse hydrolysate yielded 42.30 g/L with a productivity of 0.44 g/L·h—showcasing strong potential for integrating waste valorization with green manufacturing.
Xylonic acid, derived from xylose, serves as a biodegradable and thermally stable compound for producing polymers, preservatives, and vitamin intermediates. By utilizing sugarcane bagasse—a renewable feedstock available in over 270 million tons annually—the study proposes a pathway for sustainable biorefinery processes aligned with circular bioeconomy goals.
According to the paper, optimizing the yeast’s metabolic performance with glycerol co-feeding and pH-controlled aeration enhances yield and stability, making industrial-scale production feasible. The work not only demonstrates biotechnological innovation but also adds economic value to Brazil’s sugar and biodiesel industries through integrated resource utilization.
Reference
de Almeida, I. C., Almeida, J. R. M., Machado, F., & Gonçalves, S. B. (2025). Xylonic Acid Production from Sugarcane Bagasse Hydrolysate Using an Engineered Komagataella phaffii Strain. Applied Biochemistry and Biotechnology. https://doi.org/10.1007/s12010-025-05398-8
Related posts:
Turning Beer Waste into Beauty Gold: How Residual Yeast Can Produce Sustainable Hyaluronic Acid
Turning Forestry Waste into Biotech Gold: How Mycological Degradation Transforms Bark-and-Wood Residues
Optimized Fermentation Boosts Bacteriostatic Bacillus coagulans Yield 16-Fold
Halophilic Mesobacillus sp. LC4 Turns Soy Sauce Waste into Valuable Bioactive Peptides
Sustainable Growing Media Boosts Glasshouse Strawberry Production and Soil Health
