نتایج جستجو برای: gram bacteria
تعداد نتایج: 227020 فیلتر نتایج به سال:
Background & Aim: In this study, is done during one-year research on blue–green and green algae for antimicrobial activity in Mashhad suburb. Aqueous, ether, and methanol extracts from 44 species blue – green algae and green algae were examined for antimicrobial properties against four bacteria (tow positive gram bacteria and tow negative gram bacteria) and tow fungous. Material & Methods: Amo...
the essential oil of peucedanum ru t h e n i c u m fruits, obtained by hydrodistillation, was analyzed by gas chromatography and gas chromatography mass spectrometry. among the 31 identified constituents accounting for 83.9% of the total oil, the major components were 1,8-cineole (11.15%), camphor (5.86%), z-carveol (6.88%), l-carvone (5.61%), 8,9-dehydroisolongifolene (11.35%), caryophyllene o...
Cyanobacteria, the blue green algae are one of the most diverse groups of Gram-negative photosynthetic prokaryotes widely distributed throughout the world. Cyanobacteria are known to produce a wide range of secondary metabolites with various biological actions. The aim of this study was to test extracts from various cyanobacteria isolated from Geno hot spring, Bandar Abbas (Iran) against a dive...
the presence of antibacterial activity in bovine β-lactoglobulin and in α-lactalbumin hydrolysates was investigated. the plasmin-digest of β-lactoglobulin (pdβ) and of α-lactalbumin (pdα) were fractionated, using reversed phase high performance liquid chromatography. the antibacterial activity of β-lactoglobulin, α-lactalbumin, nisin, plasmin, pdβ and pdα were in vitro tested against pathogenic...
Introduction & Objective: Holothuria leucospilota, sea cucumber, is a species of the Phylum Echinodermata. Sea cucumbers have the most natural products with biological activity. In this study we investigated the antibacterial activity of aqueous and methanol extract of H. leucospilota used against gram positive and gram negative human pathogenic bacteria. Materials & Methods: ...
Introduction: Antibiotic resistance survey in Gram-negative bacteria has an important role in the management of treatment. The aim of this study was to evaluate antibiotic resistance of Gram-negative bacteria isolated from patients and determination of contamination rate of different wards of hospital to these bacteria. Methods: Information of 3242 patients from hospital information system o...
background: treatment of chronic sinusitis is complicated due to increase of antibiotic-resistant bacteria. the aim of this study was to determine the multidrug resistance (mdr) pattern of the bacteria causing chronic sinusitis in north of iran. methods: this cross-sectional study was carried out on patients with chronic sinusitis. bacterial susceptibility to antimicrobial agents was determined...
the chemical composition of essential oils isolated from the leaves of cosmos bipinnatus and its antibacterial activity were analyzed by gc-ms and microbroth dilution assay respectively. the essential oil extracted from this plant was predominantly composed of monoterpenes (69.62%) and sesquiterpenes (22.73%). the antibacterial assay showed that the oil had significant inhibitory effects agains...
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