This book brings forth some of the most innovative concepts and elucidates the unexplored aspects of bionanotechnology, microbiology, and genetic engineering. The biotechnological applications of microbiology and genetic engineering in the field of pharmaceuticals, bioenergy, food industry, agriculture, etc. have been discussed in this book. The interdisciplinary advances of these fields such as green chemistry, protein engineering, etc. have also been elucidated. It includes contributions of experts and scientists which will provide innovative insights into these fields. It is an essential guide for both research scholars and those who wish to pursue this discipline further.