Dr. Biswas is a bacteriologist and has committed to develop crosscutting research programs in foodborne bacterial infection control and food safety area. His research focuses on developing alternatives to sub-therapeutic (growth promoting) and therapeutic (animal disease control) and mitigate the emerging issue of antibiotic resistance bacterial pathogens in farm animal production system. His research also target to define the colonization mechanism of foodborne zoonotic bacterial pathogens their in animal reservoirs and the mechanism by which pathogens become resistance against antimicrobial components. He also investigates the role of natural products in control of foodborne bacterial colonization in animals and mechanism of antimicrobial activity of these components.