The achievement of this monograph would not have been possible without expertise of Departments of Zoology and Chemistry,JKUAT and BCED at icipe-African Insect Science for Food and Health, respectively. The Management at ICIPE enabled the study. Special gratitude to Dr. A. Hassanali (Emeritus Scientist-ICIPE),Professor of Chemistry,Kenyatta University, for his immense contribution and input to this work from the time of conceptualizing the project,constructive advice during the actual bench-work and positive critiques of this write-up. Heart-felt gratitude for allowing me sit beside him at his computer''s desk in his office on countless occasions, where he guided me on how to write and communicate science. I wish to thank Dr. B. Torto for managerial role at BCED, which facilitated the research work. My gratitude is also due to the members of staff of the BCED for the interest and support in the work. The Netherlands-SII through ARPPIS, at ICIPE for the offer of the scholarship for the PhD opportunity is greatly appreciated.Yet importantly,glory and honour to the Almighty God for this excellent opportunity.His grace and love are sufficient and endures forever for believers.