Food Nanotechnology is the operation or self- assembly of each molecules, atoms and molecular clusters into structures to produce materials with different properties. Food science in Nanotechnology is how food is grown and how it is packaged. Several nanomaterials are produced that make a difference in food taste, food safety and health benefits. Silicate nanoparticles are produced to provide a barrier to moisture in a plastic film used for packaging and hence food spoiling or drying is reduced. Researchers are using Nanosensors that can detect bacteria such as Salmonella at a packaging point.