Nepeta depauperata belongs to the Lamiaceae family and is one the Persian endemic plants which has not been investigated biologically. In the present paper we had focused on the assessment of the antibacterial and antifungal activities of the total methanolic extract and different sub-fraction of the flowering aerial parts of it. The Antibacterial and antifungal activities were investi...

Introduction: Typhoidal Salmonella causes an invasive infection resulting in 200 000 deaths among 20 million patients annually. Typhoid remains a public health problem in Southeast Asia, the Indian subcontinent, Africa, and South America. Traveler’s diarrhea caused by Salmonella is common in Asia. Outbreaks of typhoidal Salmonella resistant to ampicillin, chloramphenicol, and t...

objective(s):typhoid fever is a dreadful disease of a major threat to public health in developing countries. vaccination with bacterial immunodominant components such as surface proteins may prove as a potent alternative to live attenuated vaccines. invh, an important part of needle complex in type three secretion system (ttss) plays important role in efficient bacterial adherence and entry int...

Chromatographic separation of an ethyl acetate extract from Embelia schimperi led to the isolation of a new compound identified as 2,5-dihydroxy-3-methyl-1,4-benzoquinone (1) on the basis of spectroscopic and physical data. The plant's crude extract and pure compound 1 were assayed for in vitro antimicrobial activity against clinical strains of Salmonella spp., Proteus spp., Pseudomonas aerugin...

Plants or natural resources have been found to be a good alternative method for nanoparticles synthesis. In this study, polyaniline coated silver nanoparticles (AgNPs) synthesized from Piper betle leaves extract were investigated for their antibacterial activity. Silver nanoparticles were prepared from the reduction of silver nitrate and NaBH4 was used as reducing agent. Silver nanoparticles an...

Plants or natural resources have been found to be a good alternative method for nanoparticles synthesis. In this study, polyaniline coated silver nanoparticles (AgNPs) synthesized from Piper betle leaves extract were investigated for their antibacterial activity. Silver nanoparticles were prepared from the reduction of silver nitrate and NaBH4 was used as reducing agent. Silver nanoparticles an...

Advancement in green chemistry has increased the use of microbial hydrolyases various industries and chemical processes because high catalytic efficiency, specificity, cost-effectiveness eco-friendly nature. Bioconversion tannins such as tannic acid is achieved by tannin acyl hydrolase, also known tannase. It converts into glucose gallic catalyzing hydrolysis ester depside linkages acid. Tyrosi...

cladophora and enteromorpha are the filamentous green-algal genuses that have a widespread distribution in caspian sea coast. the aim of this study was to assess the antimicrobial activities of cladophora and enteromorpha in south of caspian sea. antibacterial activities of hydroalcoholic extracts of five different gram negative and positive bacteria including staphylococcus aureus, bacillus su...