Harnessing Biofilms: Unlocking the Potential of Lignocellulose for Sustainable Bioethanol Production

Abstract

Bioethanol is a promising renewable energy source with the potential to reduce global reliance on fossil fuels and mitigate greenhouse gas emissions. Lignocellulose, a complex and abundant biomass composed of cellulose, hemicellulose, and lignin, represents a sustainable feedstock for bioethanol production due to its widespread availability and non-competition with food resources. However, the efficient conversion of lignocellulose to bioethanol faces challenges, including the recalcitrance of its structure and the need for effective pretreatment, enzymatic hydrolysis, and fermentation processes. This review critically evaluates the role of microbial biofilms in enhancing lignocellulose-to-bioethanol conversion. It explores the potential of biofilms in improving pretreatment efficiency, facilitating enzymatic hydrolysis, and optimizing fermentation processes. Additionally, the review highlights the application of biofilms in enzyme immobilization and bioreactor design, emphasizing their ability to enhance process stability, productivity, and cost-effectiveness. By leveraging the unique properties of biofilms, this review provides insights into advancing bioethanol production from lignocellulosic biomass.