Study antimicrobial effects of ethanol extract of nut(corylus avellana), leaf and male flower in natural and planted habitats

Hazelnut (corylus avellana) is native to Europe, Asia Minor and the Caucasus. Hazelnut tree cultivation have been common since ancient times Its cultivation has has developed in Europe from the fourteenth century and gradually extended in Mediterranean countries. Romans and Greeks were aware of its therapeutic properties and nutritional value. Hazelnut tree cultivation has benn common in Iran from old time. It is originated in Neolithic geological age but the exact time of culture is unknown. In this study effect of ethanol extract of leaf and shaton of hazel on eight bacteria including Bacillus subtilis, Bacillus cereus, Staphylococcus aureus, Micrococcus luteus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia and Yersinia enterocolitica were studied and compared to ceftizoxime and ciprofloxacin. Results showed differences among different habitats. Leaf extracts had more antimicrobial activity. The planted trees had more antimicrobial properties than plants belonged to natural habitats.