Lignin. Table List and advantages of acids used for the extraction and saccharification of BSG's hemicellulose. as the formation of side products such as levulinic and formic acids justifying the use of low amount of acidic catalyst. One advantage of BSG compared to other LCB, apart from its high availability and low price, is the composition of its hemicellulose exclusively made of rare sugars: xylose and arabinose with a 7:3 ratio, similar to wheat straw but very different from hard and soft wood that are mainly composed of glucuronoxylane and galactomannane. Furthermore, its main advantage is the lower density of its matrix, making its hemicellulose extraction easier and more efficient: 37 minutes for BSG against 12 hours for hard wood in similar conditions. This increased reactivity is due to the lower apparent activation energy of agri-food wastes estimated at 50 kJ/mol (wheat straw) against 100-200 kJ/mol for wood derivates, resulting in lower operating temperatures: 100-200°C against 150-250°C. However, stronger degradation into furan derivates can be observed when comparing corn and pine biomass for example which require the need of milder reaction conditions. It is noteworthy to mention that the use of continuous flow saccharification developed by Harris et al. allows to avoid the degradation of the monomeric sugars. In the end, BSG was found to be the most interesting raw material for lignocellulosic fractionation and hemicellulose hydrolysis when comparing various biomasses (hard wood, soft wood and several agricultural wastes), with a xylose yield around 95 % (similar to wheat straw) and requiring the lowest temperature and reaction time. Finally, the extracted sugars can be separated, after filtration of the salts from the acid catalyst, using ionic exchanger resins for example, but it is best to use the mixture of sugars if possible to reduce the number of steps and environmental impact of purification and separation procedures. The use of BSG as bioresource for the obtention of hemicellulose or monosaccharides is thus competitive compared to other biomasses, allowing higher yields and the use of milder reaction conditions and shorter reaction time, leading to greener processes.