198 Lactic acid bacteria (LAB) were isolated from Iranian milk samples. Almost all isolatedLAB showed inhibitory activity towards E. coli and S. aureus as Gram negative and Grampositive indicators, respectively. No role was observed for hydrogen peroxide in the activity ofall isolated strains while organic acids proved a prominent role in all detected inhibitoryactivities. Within isolated LAB, ...

Background With considering the importance of natural products for their remedial and therapeutic value, this research was aimed to analyze the chemical compositions and antimicrobial activity of four propolis samples from different areas of Iran (Chenaran, Taleghan, Morad Beyg, and Kalaleh) with various climates and flora. Methods Ethanolic (70% EtOH) and dichlromethane (DCM) extracts of Ira...

Medicinal plants are the source of treatment for many diseases and ailments throughout developing world. Studies on them could lead to finding novel drugs effective various diseases. We have chosen one most commonly used Cymbopogon citrates leaves present study which was screened phytochemical antibacterial properties. The activity test evaluated qualitatively through use diffusion method a sol...

milk and dairy products are important components of a balanced diet. milk does have distinct physicochemical, biological and microbial characteristics. the bacterial contamination of milk not only reduces the nutritional quality but its consumption threatens health of the society. in this study, 100 pasteurized milk samples were collected randomly from tabriz city, northwestern and were analyze...

Background The increasing resistance of pathogenic bacteria to antibiotics is a challenging worldwide health problem that has led to the search for new and more efficient antibacterial agents. Nanotechnology has proven to be an effective tool for the fight against bacteria. Methods In this paper, we present the synthesis and traits of trimetal (CuZnFe) oxide nanoparticles (NPs) using X-ray di...

Food poisoning has been emerged as a worldwide health issue and related illness in both developed and developing countries confirms its significance as an important public health priority.In vitro antibacterialevaluationof nine fluoroquinolone derivatives against food borne bacteria including Gram-positive (Staphylococcus aureus) and Gram-negative (Salmonella enterica, Escherichia coli, Yersini...

Microbial infections cause complicated health influences along with bad economic impacts. In the present investigation, three dominant seaweeds namely, Amphiroa anceps, Corallina officinalis and Sargassum filipendula were collected from different Egyptian sites at Red Sea Mediterranean during autumn 2019. Organic extracts of algae screened for their antibacterial activity against pathogenic bac...

The aim of this study was to determine the antibacterial and antifungal properties of the extracts, subextracts and essential oils of Bidens tripartita flowers and herbs. In the study, twelve extracts and two essential oils were investigated for activity against different Gram-positive Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus, Gram-negative bacteria Escherichia coli, E. coli...

Polypyrrole-chitosan nanocomposite (PPy-CTN) was synthesized by dispersion polymerization of PPy in presence of CTN. Preparation of spherical PPy nanoparticles that were successfully covered with a thin layer of chitosan was confirm by transmission electron microscopy (TEM) technique. Characterization techniques also revealed the presence of CNT in the polymer matrix and its presence was confir...

BACKGROUND Current strategies to overcome the global problem of antimicrobial resistance include research in finding new and innovative antimicrobials from plants. This study was carried out to determine the antibacterial activity of plant extracts of Olea africana stem-bark, Psidium guajava leaves, Vernonia amygdalina leaves, Lantana camara leaves and Mangifera indica leaves which are used in ...