Recently we reported ulcer protective, plantain banana enhancing antioxidants, superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH) and decreasing the free radicals, lipid peroxidation (LPO) and nitric oxide (NO) levels in the gastric mucosal homogenates without any anti-H. This evidence concerns the gene CAT and ulcer disease.