Antibacterial activities of polyphenols from olive leaves against Klebsiella pneumoniae

In this paper, the polyphenols existed in olive leaf were evaluated for its antibacterial activities against Klebsiella pneumoniae. 11 phenols all presented certain antibacterial effect against above-mentioned bacteria, and hydroxytyrosol (HT), oleuropein, 3,4-dihydroxybenzoic acid and caffeic acid, could have excellent inhibition results. The results indicated that several phenols could be a valuable source of natural agents with functional properties for the food and pharmacology industries.