Extraction of antibacterial peptides against from bovine milk casein.

Introduction: More than half of the world's population is infected with , which may cause gastritis, peptic ulcer and even gastric cancer. The World Health Organization (WHO) has announced that infection is a class I carcinogen and hence eradication of it is highly important. Bovine milk contains caseins, which can be digested by various enzymes in the human stomach to produce antibacterial peptides.