Extraction of high-quality grade cellulose and cellulose nanocrystals from different lignocellulosic agri-food wastes

Introduction Prompted by the increasing need for an intensified valorization of agri-food waste, in this work a three-step chemical procedure was used to extract high-purity cellulose from garlic stalk, corncob, and giant cane cut-up sequential removal hemicellulose, lignin, ash, organic compounds. Cellulose nanocrystals potential interest nanocomposite applications were then obtained through acid hydrolysis. Methods The purity determined employing Nuclear Magnetic Resonance infrared spectroscopy, whereas dynamic light scattering, optical, atomic force microscopy, transmission electron microscopy morphological characterization. high crystallinity confirmed comparison with ultra-pure bacterial originating K. sucrofermentans , irrespective waste used. Results discussion At end extraction procedure, yields 35.73, 37.15, 39.10%, cut-up, respectively, achieved. Dynamic scattering analyses showed that length whisker-like depended on raw material (from ~100 nm up > 2μm), while final yield ~40–50% all three wastes. versatility effectiveness method here proposed can be profitably wide range agro-waste feedstocks.