<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Tsolanku Sidney Maliehe</style></author><author><style face="normal" font="default" size="100%">Tlou Nelson Selepe</style></author><author><style face="normal" font="default" size="100%">Nokuthula Nomusa Mthembu</style></author><author><style face="normal" font="default" size="100%">Jabulani Siyabonga Shandu</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Antibacterial and Anti-quorum Sensing Activities of Erianthemum dregei`s Leaf Extract and Molecular Docking</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Anti-quorum sensing activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Antibacterial activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Erianthemum dregei</style></keyword><keyword><style  face="normal" font="default" size="100%">Molecular docking</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2023</style></year><pub-dates><date><style  face="normal" font="default" size="100%">April 2023</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">279-285</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Background: &lt;/strong&gt;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. &lt;strong&gt;Objective: &lt;/strong&gt;The study aimed at investigating the antibacterial and antiquorum sensing properties of compounds from &lt;em&gt;Erianthemum dregei&lt;/em&gt; and their molecular interactions with the target proteins. &lt;strong&gt;Methods: &lt;/strong&gt;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 &lt;em&gt;Chromobacterium violaceum&lt;/em&gt; (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. &lt;strong&gt;Results: &lt;/strong&gt;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. &lt;strong&gt;Conclusion: &lt;/strong&gt;The results revealed that the extract is a potential source of antibacterial and anti-quorum sensing compounds and thus can have pharmacological applicability.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><work-type><style face="normal" font="default" size="100%">Original Article </style></work-type><section><style face="normal" font="default" size="100%">279</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Tsolanku Sidney Maliehe&lt;sup&gt;1,*&lt;/sup&gt;, Tlou Nelson Selepe&lt;sup&gt;1&lt;/sup&gt;, Nokuthula Nomusa Mthembu&lt;sup&gt;2&lt;/sup&gt;, Jabulani Siyabonga Shandu&lt;sup&gt;2&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Department of Water and Sanitation, University of Limpopo, Private bag X1106, Polokwane, 0727, SOUTH AFRICA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, SOUTH AFRICA.&lt;/p&gt;
</style></auth-address></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">L S Ngidi</style></author><author><style face="normal" font="default" size="100%">C I Nxumalo</style></author><author><style face="normal" font="default" size="100%">J S Shandu</style></author><author><style face="normal" font="default" size="100%">T S Maliehe</style></author><author><style face="normal" font="default" size="100%">K Rene</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Antioxidant, Anti-quorum Sensing and Cytotoxic Properties of the Endophytic Pseudomonas aeruginosa CP043328.1 's Extract</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Anti-quorum sensing activity</style></keyword><keyword><style  face="normal" font="default" size="100%">antioxidant activity</style></keyword><keyword><style  face="normal" font="default" size="100%">Chemical composition</style></keyword><keyword><style  face="normal" font="default" size="100%">Cytotoxicity assay</style></keyword><keyword><style  face="normal" font="default" size="100%">Pseudomonas aeruginosa CP043328.1</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">March 2021</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">332-340</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Background: &lt;/strong&gt;Novel bioactive compounds are in high demand to combat challenges of microbial resistance. In recent years, secondary metabolites from endophytic bacteria have drawn attention from researchers due to their novel structures and significant biological activities. &lt;strong&gt;Objective:&lt;/strong&gt; This study aimed at extracting secondary metabolites from endophytic &lt;em&gt;Pseudomonas aeruginosa&lt;/em&gt; CP043328.1 from &lt;em&gt;Anredera cordifolia&lt;/em&gt; leaves for their biological activities. &lt;strong&gt;Methods:&lt;/strong&gt; The anti-SMASH was used to predict the biosynthetic gene clusters of &lt;em&gt;P. aeruginosa &lt;/em&gt;CP043328.1. The bacteria was resuscitated on Nutrient agar. Ethyl acetate was used to extract the secondary metabolites. Chemical composition of the secondary metabolites was evaluated using gas chromatography-mass spectrometry (GC-MS) and 2, 2-diphenyl-1-picrylhydrazyl (DPPH), and 2, 2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) methods were used to analyze the scavenging activity. Anti-quorum sensing activity was investigated using &lt;em&gt;Chromobacterium violacuem &lt;/em&gt;ATCC 12472 as the biological indicator. Cytotoxicity assay was performed using a tetrozolium-based columetric (MTT) assay. &lt;strong&gt;Results: &lt;/strong&gt;The bacterium has 12 gene clusters that encode for secondary metabolites. The extract revealed 15 volatile constituents with diisooctyl phthalate (50.51%) and [1, 2, 4] oxadiazole, 5-benzyl-3 (10.44%) being the major compounds. The extract revealed scavenging capabilities with IC&lt;sub&gt;50&lt;/sub&gt; of 0.625 mg/ml for DPPH and 0.15 mg/ml for ABTS. It displayed anti-quorum sensing activity with 88% violacein inhibition at 3.31 mg/ml. According to MTT assay, the extract was found to be safe for use up to 2000 μg/mL. &lt;strong&gt;Conclusion:&lt;em&gt; &lt;/em&gt;&lt;/strong&gt;&lt;em&gt;P. aeruginosa &lt;/em&gt;CP043328.1 shows a potential use as a source of pharmacologically important metabolites.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">332</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;L. S. Ngidi&lt;sup&gt;1,&lt;/sup&gt;*, C. I. Nxumalo&lt;sup&gt;1&lt;/sup&gt;, J. S. Shandu&lt;sup&gt;1&lt;/sup&gt;, T.S. Maliehe&lt;sup&gt;1&lt;/sup&gt;, K. Rene&lt;sup&gt;2&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Department of Biochemistry and Microbiology, Faculty of Science and Agriculture, University of Zululand, Private Bag X1001, KwaDlangezwa 3886, SOUTH AFRICA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Discipline of Medical Biochemistry, College of Health Sciences, University of KwaZulu- Natal, Private Bag X 54001, Durban 4000, SOUTH AFRICA.&lt;/p&gt;
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