Recent advances in subcritical water pretreatment of lignocellulosic biomass

This article collection aims to describe the recent advances and trends in the subcritical water pretreatment of lignocellulosic biomass, focusing on extraction, hydrolysis, and combination with other modern extraction techniques (e.g., ultrasound, microwave, and pressurized liquid extraction) for further downstream processing and application in an integrated biorefinery for the recovery of bio-based products. The scope of this article collection is focused on submissions that address the following topics: 1. Extraction and hydrolysis processes with subcritical water technology 2. Combination of subcritical water with other modern extraction techniques (e.g., ultrasound, microwave, and pressurized liquid extraction) 3. Downstream processing of hydrolysate obtained from subcritical water pretreatment 4. Integration between subcritical water pretreatment and fermentation for the recovery of bio-based products 5. Scale-up, economic assessment and cost description of subcritical water pretreatment 6. Environmental assessment of subcritical water pretreatment 7. Integrated biorefinery based on subcritical water pretreatment as the key process Keywords: Biomass; Circular economy; Biorefinery; By-products; Agri-food industry; Extraction; Hydrolysis; Pretreatment; Subcritical water.