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43 results for “Gram Positive Bacteria”
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Research ArticleOpen accessEvery word in the titleGRAPHENE OXIDE AS ANTIMICROBIAL AGAINST TWO GRAM-POSITIVE AND TWO GRAM-NEGATIVE BACTERIA IN ADDITION TO ONE FUNGUSRoda F. Al-Thani, Noorunnisa Khanam Patan, Mariam A. Al-MaadeedGraphene based materials have wide potential applications in biology, biomedical, agriculture environmental and biotechnology. Graphene Oxide (GO) is one of those materials and has a promising substance as antimicrobial agents. GO in this study was prepared by a modified Hummers method and was characterized by different techniques for confirmation of formation of GO. To study the antimicrobial activities of GO, … …OnLine Journal of Biological Sciences, Vol. 14, Issue 3 · 14 Oct 2014 · 9,243 accessesView PDFCite
Research ArticleOpen accessIn the keywordsComparative Evaluation of Synergistic Antibacterial Effects in Blended Essential Oil against Gram-Positive and Gram-Negative PathogensMin-Gi Kwon, Jae Kyung KimThe rising emergence of multidrug-resistant bacteria has heightened the search for novel antibiotic agents. Essential Oils (EOs) are complex combinations of volatile organic compounds generated by plants, with many exhibiting significant antimicrobial properties. This study evaluates the antibacterial movement of single and blended EOs against representative gram-positive bacteria Staphylococcus aureus and Methicillin-Resistant S. aureus (MRSA) and gram-negative bacteria Escherichia coli … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 2 · 7 Jul 2025 · 5,481 accessesView PDFCite
Research ArticleOpen accessIn the keywordsExtraction of Essential Oil from Nigella sativa Using Supercritical Carbon Dioxide: Study of Antibacterial ActivityNagi A. Alhaj, Mariana N. Shamsudin, Hana F. Zamri, Rasedee AbdullahThe antimicrobial activity of N. sativa essential oil obtained by supercritical fluid extraction by carbon dioxide was investigated against Gram Positive and Gram negative strains, isolated from clinical specimens. Best conditions for Black cumin oil extraction are obtained at 400 bar, 40°C and a solvent flow rate of 25 g min-1. The seed extracts were prepared by supercritical fluid extraction … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 4 · 31 Dec 2008 · 8,205 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiomolecular Identification of Bacteria Endophytic From Betel Leaf in Jambi City Forest Park Area as Antibiotic-Producing PotentialArzita, Miranti Sari Fitriani, Nyimas Myrna Elsa Fathia et al.Background and Objective: Muhammad Sabki City Forest Park in Jambi City has three types of betel plants that contain endophytic bacteria. In 2021, six isolates of endophytic bacteria with the potential for producing antibiotics (halo zone above 10 mm) have been isolated, which can kill Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) test bacteria. that are 5 (five) isolates derived … …OnLine Journal of Biological Sciences, Vol. 25, Issue 4 · 15 Feb 2026 · 1,234 accessesView PDFCite
Research ArticleOpen accessIn the abstractDiversity and Resistance of Bacteria Isolated from a Neonatal Intensive Care Unit (NICU) Surfaces and the Hands of Nurses in Jeddah-Saudi ArabiaRoqaiah M. Al-Jabri, Ahmed M. Al-Hejin, Rukaia Gashgari et al.Healthcare-Associated Infections (HAIs) are a serious problem for neonates when admitted to NICUs. The healthcare environment and healthcare workers' hands may be a source of transmission. Therefore, there is a need to find microbial sources and identify the contaminants to improve disinfection protocols to reduce HAIs. Out of the 169 samples collected on nutrient agar media from NICUs of a … …OnLine Journal of Biological Sciences, Vol. 22, Issue 3 · 5 Aug 2022 · 5,828 accessesView PDFCite
Review ArticleOpen accessIn the abstractMechanistic Insights of Actions of Metal Nanoparticles on Multidrug-Resistant BacteriaSeham S. Alzahrani, Hani Mohammed Ali, Mohamed M. AhmedMultidrug-Resistant bacteria (MDR) are the most serious threat to public health. The number of infections caused by resistant strains is on the rise all over the world. At this time, new techniques for developing antimicrobial drugs are becoming necessary. Metallic Nanoparticles (MNPs) in the biomedical field are one of the most promising methods to overcome antibiotic resistance. Nanoparticles have recently … …OnLine Journal of Biological Sciences, Vol. 21, Issue 2 · 22 Jun 2021 · 6,374 accessesView PDFCite
Case ReportOpen accessIn the abstractA Case of Leptospira Ards- “Obsession with COVID-19 Leading to Delayed Diagnosis of Common DiseasePrakash Tendulkar, Divanshee Sharma, Mukesh Bairwa, Ravi KantLeptospirosis is a bacterial infection caused by spirochaete. It’s a gram-negative bacterium. It spreads Through animal urine or soil or water contaminated with Animal urine (Rat), when coming into contact with mouth, nose, eyes or breach in the skin. It is more common in farmers and people involved in water sports. In leptospirosis symptoms can range from mild muscle pains, … …American Journal of Infectious Diseases, Vol. 17, Issue 2 · 30 Apr 2021 · 6,781 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Di-(2-Ethylhexyl) Phthalate on the Microbial Community in Vegetables PhyllosphereXiaowei Fu, Dan WuA panel count method and a phospholipid fatty acid analysis technique were used to investigate the responses of Di-(2-Ethylhexyl) Phthalate (DEHP) pollutants to the phyllosphere microbial communities of Chinese Cabbage. The results of plate count analysis showed that the number of culturable microorganisms could be lower than that of water spray after treated with a certain amount of DEHP pollutant. … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 1 · 11 Jan 2020 · 7,242 accessesView PDFCite
Research ArticleOpen accessIn the abstractMultidrug Resistant Uropathogens among Egyptian Pregnant WomenWafaa Salah Metwally, Walid Mohamed ElnagarUrinary Tract Infections (UTIs) in pregnancy is a common medical problem associated with significant increase in the risk of fetal morbidity and mortality. The effective appropriate antimicrobial agent is a major concern as many effective antimicrobial groups cannot be used due to their potential toxicity to the fetus as well as the increasing rates of Multidrug-Resistant (MDR) strain isolation. This … …American Journal of Infectious Diseases, Vol. 15, Issue 4 · 21 Dec 2019 · 7,487 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of Cellulase-Assisted Extraction of Total Flavonoids from Corn Bract and Evaluation of Antioxidant and Antibacterial AactivitiesYang Zhang, Jing Lu, Leijie Ben et al.Corn bract is a corn-based agricultural waste material that distributed worldwide. In present work, response surface methodology was applied to optimize the cellulase-assisted extraction of Total Flavonoids from Corn Bract (TFCB), the in vitro antioxidant and antibacterial as well as the in vivo antioxidant activities of TFCB were investigated. Results showed that the optimal conditions for TFCB extraction were as … …American Journal of Biochemistry and Biotechnology, Vol. 15, Issue 2 · 18 May 2019 · 8,501 accessesView PDFCite