CAT and gastric neoplasm: The compounds exhibited in vitro antioxidant and immune–stimulatory activity, increasing the activity of superoxide dismutase (SOD), catalase (CAT), and glutathione S-transferase (GST) in polymorphonuclear leukocytes (PMN); they also have antimicrobial properties as demonstrated by tests with Escherichia coli and Staphylococcus aureus; they have also anti-proliferative effect on gastric tumour cell lines by induction of apoptotic effect.