Valorization of Waste Biomass in Fermentative Production of Cellulases: A Review

The most promising way to achieve the smooth, flexible and sustainable bioeconomy is the utilization of renewable lignocellulosic biomass as a feedstock for the production of fuels, chemicals, enzymes and high-valued products. Cellulolytic enzymes are indispensable for the maintenance of global carbon cycle, since they catalyze the degradation of cellulose. Therefore for solving the forthcoming waste management and energy issues of mankind, cellulase production technology plays significant and vital role. Cellulases are industrial enzymes and have extensive application in various process industries. Its relatively high cost of production has hindered the wider industrial application. Significant cost reduction is required to enhance the commercial viability of cellulase production technology. Utilization of novel and cheap lignocellulosic renewable resources as substrate for enzyme fermentation process is a promising way of efficient and low cost cellulases production. The present paper reveals, a review on cellulase production through various microorganisms employing economical, abundantly available renewable lignocellulosic biomass as carbon source. It also deals with the recent approaches used at microbial as well as feedstock level, making more efficient, flexible and cost effective fermentation process.