The Book “Nutraceutical Biomolecule: Gut Microbiology” has been prepared for M.Sc III Sem, special paper student of “Nutraceutical Biomolecules” which have been recently introduced (in 2020) as special paper in Botany (DDU Gorakhpur University, Gorakhpur). This book covers Unit 3-Gut Microbiology of the paper. In this book an attempt has been made to present the gist of the subject in a simple language and with suitable diagrams and it is hoped that this would be of some help to the students. The e-book contents are extracted/modified/compiled from various sources like research articles and freely available internet websites. It is organized for students to provide them the total content of unit 3 in one place. I acknowledge all the authors whose contents has been helpful in some or other ways in formation of this book. At last, but with deepest gratitude, I am thankful to the almighty God and deep, unfailing, supportive affection of my husband “Shri Abhai Kumar Srivastava” so that I was able to compile this work.
