Few examples of cellulose extraction and valorisation from BSG are found in the literature due the more complex accessibility, especially opposed to BSG's hemicellulose, being the most easily extractable compared to other biomasses, and simple to convert to monomers of rare sugars. Matebie et al. used a conventional approach for the obtention of cellulose with 3 pre-treatments to remove hemicellulose and lignin: diluted acid hydrolysis, alkaline treatment, and bleaching. The obtained cellulose was then converted into CNC (Cellulose NanoCrystals) using concentrated acid hydrolysis (51 wt% H2SO4). The synthesis parameters were optimised to yield cellulose with 43.24 % and a high crystallinity.