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TY - JOUR AU - Khanam, Rubina Khanam*, B.L.Chaudhary, Shabana PY - 2011/02/26 Y2 - 2025/09/23 TI - Studies on Antibacterial Activity of Asterella angusta (Steph.) Kachroo. against some Pathogenic Bacteria JF - Journal of Experimental Sciences JA - JES VL - 2 IS - 2 SE - Life Sciences DO - UR - https://www.updatepublishing.com/journal/index.php/jes/article/view/1792 SP - AB - <div style="border-right: medium none; padding-right: 0in; border-top: windowtext 1pt solid; padding-left: 0in; background: white; padding-bottom: 0in; border-left: medium none; padding-top: 1pt; border-bottom: medium none; mso-element: para-border-div; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" style="background: white; margin: 6pt 0in 0pt; text-align: justify; mso-border-top-alt: solid windowtext .5pt; mso-padding-alt: 1.0pt 0in 0in 0in; padding: 0in;"><span style="font-size: 8pt; font-family: ";Tahoma";,";sans-serif";;">The <em>In vitro</em> antibacterial activity of whole thallus of <em>Asteralla angusta</em> and<span style="mso-spacerun: yes;">  </span>its fractions petroleum ether, benzene, acetone, methanol, ethanol, and aqueous extracts were tested against the growth of four human pathogenic gram negative bacteria namely <em>Escherichia coli, Pseudomonas aeruginosa, Proteus mirabilis, Klebsiella pneumonie</em> and two gram positive bacteria <em>Bacillus subtilis</em> and <em>Staphylococcus aureus</em> using agar well diffusion technique. The plant showed significant antibacterial activity against all the organisms. The maximum antibacterial activity was observed in ethanolic extract against <em>Pseudomonas aeruginosa</em> and minimum activity was observed in petroleum ether extract against <em>Proteus mirabilis. </em>The phytochemical analysis of the extract indicated the presence of saponin, flavonoids, and carbohydrates. The inhibitory effect of the extract was compared with standard antibiotics, streptomycin.</span></p></div> ER -