Abstract

Edible vaccine holds a great promise to the field of molecular biology and genetic engineering. It has given a new concept by creating genetically engineered plants, whose edible parts contain proteins that can function as oral vaccines or food vaccines. These oral vaccines are produced by molecular farming techniques with the help of genetic engineering. They can be one of the alternatives over conventional vaccines to overcome many autoimmune diseases. These vaccines offer not only low-cost production and reduction in shipping but also decrease the frequency of potential hazards associated with conventional vaccines. This review comprises methods for production of edible vaccine, sources, mode of action, limitations and its therapeutic applications.