Valorisation of Barley Straw for Sustainable Nanocellulose Production via Subcritical Alkaline Hydrolysis and HDES-Assisted Processing.

ABSTRACT: This study investigates a sustainable and efficient approach to valorising barley straw by producing nanocellulose via an integrated subcritical alkaline hydrolysis and HDES-assisted processing pathway. Subcritical alkaline pretreatment under best processing conditions (150 bar, 200 °C, 125 min) enabled effective biomass fractionation, achieving average hemicellulose and lignin solubilisation of 57.72% and 82.69%, respectively. Subsequent purification of the pretreated solid fraction yielded cellulose fibres with an average cellulose yield of 41.97% and a purity of 87.87%. Nanocellulose was then obtained using a sequential HDES treatment followed by high-intensity ultrasound (HIUS), producing a sample (NC-BTW-3) in which 66% of particles exhibited diameters below 100 nm, 15.2% were between

SUBMITTER: Pradhan D 

PROVIDER: S-EPMC12899745 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature