International Journal of Alternative Fuels and Energy https://journals.psmpublishers.org/index.php/ijafe <p style="text-align: justify;">International Journal of Alternative Fuels and Energy (IJAFE; ISSN: 2523-9171)&nbsp; is a peer-reviewed, open access,&nbsp; international journal that considers articles on all aspects of alternative energy sources and allied sciences.</p> PSM en-US International Journal of Alternative Fuels and Energy 2523-9171 Antibacterial Compounds from Ethanolic Extract of Scenedesmus obliquus as Alternatives to Antibiotics https://journals.psmpublishers.org/index.php/ijafe/article/view/654 <p>The surge in antimicrobial resistant infections and the concurrent increase in multidrug resistant bacteria have prompted researchers to investigate antibacterial properties of natural compounds. Natural products have been widely used as sources of therapeutic agents during the last decade, with antimicrobials being one of the most promising biomolecules. Different algal extracts have been shown to exhibit antibacterial activity against Gram +ve and Gram -ve bacteria <em>in vitro</em>. In this issue, Morsi et al. investigate antibacterial activity of the concentrates of the algal extracts by agar disc diffusion method. Ethanol extract of <em>Scenedesmus obliquus</em> showed activity towards some bacteria. Numerous bioactive constituents which can be used as alternative to antibiotics were obtained from ethanolic extract of<em> S.</em> <em>obliquus</em>. Recent technological advancements have paved the way for scientists to develop synthetic drugs by modifying natural products&nbsp;to combat antibiotic resistance.</p> Asfa Ashraf Muhammad Naeem Iqbal Copyright (c) 2022 PSM https://creativecommons.org/licenses/by-nc/4.0/ 2022-04-30 2022-04-30 6 1 12 14 Letter from the Editor of Publications https://journals.psmpublishers.org/index.php/ijafe/article/view/655 <p>No abstract is available.</p> Muhammad Naeem Iqbal Copyright (c) 2022 PSM https://creativecommons.org/licenses/by-nc/4.0/ 2022-04-30 2022-04-30 6 1 15 17 Bioactivity of Natural Compounds Extracted from Scenedesmus obliquus toward Some Pathogenic Bacteria https://journals.psmpublishers.org/index.php/ijafe/article/view/632 <p>An assortment of dynamic constituents has been extracted from different types of algae. The expanded utilization of anti-microbials and chemotherapeutics for illness treatment prompts issues of rising of medication safe structures and sway antagonistic impacts on the biological system. Algae address biomolecules with a wide range of impacts valuable in various biotechnological fields. During this study, various concentrates of the green algae <em>S. obliquus</em> were tried as antibacterial toward three pathogenic bacteria (<em>Escherichia coli</em>, <em>Pseudomonas aeruginosa</em> and<em> Staphylococcus aurues</em>), utilizing BG11 media <em>Scenedesmus obliquus</em> was secluded from freshwater (Albahr elsaeidiu - Mit Yazid - Al-Qadabah) in Kafr El-Sheik governorate. Three solvents (Ethanol, Methanol and Acetone) were utilized for algal extractivity with concentrates of 5, 10, 20 and 40 mg/ml. The antibacterial activity of the concentrates of the algal extracts was determined by agar disc diffusion technique. Antibiotics were utilized to analyze their antibacterial potential. The MIC results were read up for the microorganisms that were vulnerable in the antimicrobial activity test. MIC value of the algal extracts was determined by broth dilution assay technique. Ethanol extract of <em>Scenedesmus obliquus</em> was recorded MICs values (2.25 and 7.12 and 9.5 mg/ml) toward <em>E. coli</em>, <em>P. aeruginosa</em> and <em>S. aureus</em>, individually. GC-MS examination showed that <em>S.</em> <em>obliquus</em> ethanolic extract contain numerous bioactive constituents which are considered with antibacterial impacts, for example, polyphenolic compounds, phenolic compounds, saturated and unsaturated fats, esters, ethers, amide compounds, long chain of hydrocarbons, aldehyde, alcohols and amines-containing compounds.</p> <p> </p> Hanaa H. Morsi Sabha M. El-Sabbagh Ahlam A. Mehesen Ahmed Diab Mohamed Copyright (c) 2022 PSM https://creativecommons.org/licenses/by-nc/4.0/ 2022-04-30 2022-04-30 6 1 1 11