Due to high production costs, it has been difficult to mass-produce antibacterial and bacterial toxin peptides until now, and has not been able to develop genetically engineered technologies which can be applied industrially. The research team led by Professor Park has developed the world's best genetic engineering mass production technology that can express antibacterial and bacterial toxin proteins at high efficiency through colon bacillus expression system using engineered Green Fluorescence Protein (GFP), and applied for patents on source technology in the United States, Europe and China.