Antibacterial Activity of Different Extracts Of Helianthus Tuberosus L.

Abstract

The aim of our study was to compare the antibacterial activity of extracts of Helianthus tuberosus L. obtained with polar (methanol) and non-polar (petroleum ether) solvents. The greatest antibacterial activity was expressed by methanolic extract against bacterium Salmonella Typhimurium ATCC 14028 and Escherichia coli ATCC 25922. Petroleum-ether extracts exhibited the greatest antibacterial activity against Salmonella Typhimurium ATCC 14028. The lowest antimicrobial activity was expressed by an extract obtained by petroleum-ether against Listeria monocytogenes ATCC 19112. The results indicate that a stronger antibacterial activity showed extract obtained with polar solvent.

Cilj našeg istraživanja je poređenje antibakterijske aktivnosti ekstrakata Helianthus tuberosus L. dobijenim polarnim (metanol) i nepolarnim (petrol-etar) rastvaračima. Najjaču antibakterijsku aktivnost ispoljio je metanolski ekstrakt u odnosu na bakteriju Salmonella Typhimurium ATCC 14028 i Escherichia coli ATCC 25922. Petrol-etarski ekstrakt ispoljio je najjaču antibakterijsku aktivnost u odnosu na Salmonella Typhimurium ATCC 14028. Najslabiju antibakterijsku aktivnost ispoljio je dobijen petrol-etarski ekstrakt u odnosu na Listeria monocytogenes ATCC 19112. Rezultati ukazuju da je jaču antibakterijsku aktivnost ispoljio ekstrakt dobijen polarnim rastvaračem.