Antibacterial and in vitro antidementia effects of aronia () leaf extracts.

This study investigated the antibacterial and in vitro antidementia effects of aronia () leaf extracts from 3 cultivars (Nero, Viking, and McKenzie) collected at three different stages of maturity (young, harvest, and old). was susceptible to the old leaves of cultivars McKenzie and Nero, whereas O157:H7, Typhimurium, and were not inhibited by any of the extracts. Growth of was inhibited by cv. McKenzie, resulting in increased lag time, whereas Nero had both an inhibitory and an inactivation effect. Except for cv. Viking at harvest stage, the acetylcholinesterase and butyrylcholinesterase inhibitory activity of aronia leaf extracts were about 60-70 and 70-80%, respectively. Therefore, aronia leaf is a natural resource with a potentially potent antidementia effect, besides antibacterial activity.