This up-to-date reference book discusses the synthesis, production, and application of various microbial enzymes and metabolites for health. Microorganisms like bacteria (lactic acid bacteria, Bacillus species), yeasts, and filamentous fungi have been globally exploited for their biotechnological applications. This book discusses ways to use them commercially. Chapters include the production of fibrinolytic enzymes, microbial lipases, bacteriocin production by lactic acid bacteria, and bioactives produced. It also covers microbial synthesis of alkaloids, terpenoids, and steroids. This book is useful for researchers, academicians, and industry experts in microbiology and biotechnology.