Xylose, along with glucose, is a major sugar derived from the hydrolysis of lignocellulosic biomass, among other sugars such as mannose, galactose, arabinose and rhamnose (all of them with countless applications in both pharmaceutical and food industries)[10]. d-xylose is the second most abundant sugar in nature, and a process that can be performed to convert xylose to xylitol, a polyol with wide applicability in the food and pharmaceutical industries [11], plays a significant economic role regarding biomass employment [12]. This carbohydrate can be converted into xylitol by chemical, enzymatic or microbiological routes, thus the development and optimization of methods aiming both obtaining xylose from lignocellulosic wastes and thus converting this sugar into products with higher added value is of great interest to the biotechnological science. Various raw materials can be used in xylitol production by biotechnological processes, thus, literature shows that the utilization of microorganisms for xylose