Rabia Mir, Abida Yasmeen and Syed Rizwan Abbas [Pakistan]



In this research work, some plants were studied for their antibacterial activity typically by using aqueous or ethanol extractions. These plants were Peganum harmala, Thuja occidentalis and berry juice of Hippophae rhamnoide. Agar well diffusion technique was used to determine the susceptibility to bacterial strains of the above samples. The plant extracts were tested against four bacterial strains; out of these three were Gram-negative (Pseudomonas aeruginosa, Proteus mirabilis, Klebsiella Pneumonia) and the fourth one was Gram-positive (Staphylococcus aureus). Smoke solution of Peganum harmala and Thuja occidentalis was also prepared with the help of Labbert vacuum pump apparatus to observe their antibacterial activity.  All the samples under study have maximum antibacterial activity against Pseudomonas aeruginosa which is a Gram-negative bacterium except Hippophae rhamnoide which shows antibacterial activity against Klebsiella pneumonia.

Keywords: Antibacterial activity; Peganum harmala; Thuja occidentalis; Hippophae rhamnoide