Bioprocess Engineering Essentials: Cultivation Strategies and Mathematical Modeling Techniques

In recent years, bioprocess engineering has made significant progress due to the extensive exploration and application of microorganisms and their derivatives. This advancement encompasses a wide array of domains, ranging from vaccine development, biological control agents, and industrial catalysts to fermentation processes. This chapter provides an in-depth examination of pivotal methodologies essential for optimizing bioprocesses. It begins by elucidating diverse fermentation processes, such as batch, fed-batch, and continuous fermentation. Additionally, it explores the utilization of multistage chemostat configurations such as Tank in Series, offering insights into their utility and limitations. Subsequently, the chapter delves into the complex realm of mathematical modeling in fermentation, shedding light on critical aspects like the stoichiometry of cellular growth and the determination of specific growth rates. Noteworthy is the thorough exploration of Monod kinetics, which dissects the intricate relationship between limiting substrate concentration and growth rate. Furthermore, it discusses factors influencing growth rates and delves into the kinetics of product formation, covering growth-associated, non-growth-associated, and mixed variants. Moreover, the chapter addresses essential sterilization methods crucial for upholding the integrity and safety of bioprocesses. It elucidates the underlying principles of deactivation kinetics of cell death and presents various sterilization techniques, including batch heat sterilization, continuous heat sterilization, and filter sterilization. These discussions underscore the significance of sterilization in ensuring sterility and preserving the viability of bioprocesses.