Agricultural waste biomass possesses little economical value but due to their lignocellulosic nature they are ideal resources to produce many kinds of value-added products. Different lignocellulosic waste materials are used to produce XOs as they are readily available and having high hemicellulosic content. Xylanase preparations are co-utilized to improve XOs yields. XOs production yield is improved by the co-utilization of different xylans and xylaneses which provide flexibility in the raw material selection for XOs production process. Since other pretreatment methods are neither...