This book compiles the latest research on the multifarious roles of microbial enzymes, and provides an overview of microbial enzymes and biotechnologies. It discusses the use of microbial enzymes in innovative areas like nanomedicine and synthetic biotechnology, as well as the use of starch digesting enzymes and bioactive proteins as biotherapeutics, all of which have applications in modern drug discovery processes. The book also examines the concept of microbial biotransformation and protein engineering, and covers topics such as the immobilization of therapeutic enzymes, bioengineering of enzymes for bioactive compounds, the production of hydrolytic and oxidative enzymes from plant raw materials, and prebiotics and probiotics.