This book aims to offer comprehensive insights into biomass pretreatment and utilization for recovering value-added products. The book focuses on various topics including lignocellulosic biorefinery challenges, lignolytic enzymes, bioprocess advancements, and emerging industrial applications. It also serves as a knowledge repository on the use of lignocellulosic biomass and enzymes in biotechnological processes, bio-composites development, pulp and paper processing, bio-energy production, biomass detoxification, and more. Chapters of this book cover a broad focus on enzyme technologies, treatment strategies, and the application of industrially important enzymes. Chapters cover the unique features, like the focus on economically feasible treatment strategies, and highlight the book's emphasis on practicality. The book includes aspects of microbial enzymes and biomass overview, advancements in biomass pretreatment, metabolic and genetic engineering approaches, improved process and recovery strategies, eco-friendly bio bleaching in the pulp and paper industry, bioethanol production, and lignocellulose biorefinery. This book is targeted towards a diverse audience including undergraduates, postgraduates, and researchers in academia and industries.