@article {1992, title = {Antibacterial and Anti-quorum Sensing Activities of Erianthemum dregei{\textquoteleft}s Leaf Extract and Molecular Docking}, journal = {Pharmacognosy Journal}, volume = {15}, year = {2023}, month = {April 2023}, pages = {279-285}, type = {Original Article }, chapter = {279}, abstract = {

Background: The increasing incidence of multi-drug resistance among pathogens has propelled researchers to search for novel antimicrobial and anti-quorum sensing agents characterised by different mechanisms and high potency. Objective: The study aimed at investigating the antibacterial and antiquorum sensing properties of compounds from Erianthemum dregei and their molecular interactions with the target proteins. Methods: The methanolic leaf extract from E. dregei was evaluated for its chemical composition and antibacterial activity using gas chromatography-mass spectrophotometry (GC-MS) and micro-dilution method, respectively. The inhibition of violacein production in Chromobacterium violaceum (ATCC 07) was assayed as anti-quorum sensing activity using micro-dilution method. The molecular docking of the GC-MS ligands and penicillin-binding protein 2x (PDP2) and CviR was executed using AutoDock Vina. Results: The two volatile compounds namely phytol (93.58\%) and 3-tetradecyn-1-ol (6.42\%) were shown by GC-MS. The extract exhibited antibacterial activity against the selected bacterial strains with minimum inhibitory concentration (MIC) values ranging from 1.56 to 3.125 mg/mL. The maximum inhibition of violacein production of 53.93\% was observed at 1.56 mg/mL. Both compounds had docking scores of more than -6.0 kcal/mol against the target proteins. Conclusion: The results revealed that the extract is a potential source of antibacterial and anti-quorum sensing compounds and thus can have pharmacological applicability.

}, keywords = {Anti-quorum sensing activity, Antibacterial activity, Erianthemum dregei, Molecular docking}, doi = {10.5530/pj.2023.15.39}, author = {Tsolanku Sidney Maliehe and Tlou Nelson Selepe and Nokuthula Nomusa Mthembu and Jabulani Siyabonga Shandu} }