The text first explains the basics of microbiology and biochemistry before moving on to explore the significance of enzymes, their properties, types, kinetics, industrial applications, production and formulation and the methods of their immobilization. It also deals with cell growth and its kinetic aspects and discusses various types of biological reactors with an emphasis on key engineering practices related to fermentation processes and products, bioreactor design and operation. It offers a complete description on downstream processing and control of microorganisms. Besides, it also covers in the appendices some important topics such as process kinetics and reactor analysis, bioenergetics, and environmental microbiology to justify their relevance in biochemical engineering