Biotechnology of Filamentous Fungi: Technology and Products provides a comprehensive discussion of the molecular biology, genetics, and biochemistry of filamentous fungi. It also deals with general principles of biochemical engineering such as process design and scaleup. The book's main emphasis, however, is on the commercial significance of filamentous fungi. The book highlights the unique aspects of filamentous fungi along with those aspects common to most microorganisms studied in industries that use biotechnology. Filamentous fungi can generate a wide range of industrial products including primary metabolites such as organic acids, secondary metabolites such as β-lactam antibiotics, nonantibiotic drugs, and enzymes for use in food production. Whole organisms such as mushrooms can be used as well as organisms used as insecticides and herbicides. Filamentous fungi also qualify as potential hosts for the secretion of certain heterogeneous proteins such as mammalian proteins. However, not all things related to fungi are beneficial. Mycotoxins products by fungi can be lethal to humans; there is also a need to develop antifungal agents to destroy fungi that can kill animals and plants. These topics are important aspects of the biotechnology of filamentous fungi and are dealt with in this text.