introduction: in this study, the chemical composition and antimicrobial activity of essential oil of ziziphora clinopodiodes and its potential application as a natural preservative in reducing the indigenous microbial population of hamburger were investigated. method: essential oil of ziziphora clinopodiodes cultivated in iran was obtained by hydro-distillation method (hdm). chemical compositio...

Taguchi L9 orthogonal array was implemented to select optimum values of process parameters and to attain the maximum removal of pollutants and power generation from dairy industry wastewater using double chambered salt bridge microbial fuel cell. The maximum chemical oxygen demand reduction, current, voltage, power, current density and power density in double chambered salt bridge microbial fue...

BACKGROUND/AIM The purpose of the present investigation was to examine subgingival microbial profiles associated with refractory periodontitis and to seek such profiles in periodontally healthy, periodontally well-maintained elder and untreated periodontitis subjects. METHODS 36 subjects were defined as refractory on the basis of further attachment loss after scaling and root planing, surgery...

Background: Considering the toxic effects of heavy metals and microbial pathogens in industrial wastewaters, it is necessary to treat metal and microbial contaminated wastewater prior to disposal in the environment. The purpose of this study is to assess the removal of heavy metals pollution and microbial contamination from a mixture of municipal and industrial wastewater using membrane biorea...

The quinone profiles of microbial biomass samples from wastewater and natural aquatic environments were studied. A soil sample was alse analyzed for comparison. Attempts were made to perform numerical analyses on these profiles by using three pararneters, the microbial divergence index (MD,), the bioenergetic divergence index (BD,), and the dissimilarity ndex (D), and the algorithm of the neigh...

freezing causes changes on chemical and microbial quality of butter. in this research, effects of two different temperatures -9 and -18oc on changes of moisture, fat, acidity and peroxide value and also coliform and psychrotrophic microorganisms in frozen butter were studied. results showed that values of moisture and fat during 7 months of frozen storage at two temperatures decreased 1.8% and ...

BACKGROUND: Chicken meat is susceptible to microbial and chemical contamination and using antimicrobial agents helps to prolong its shelf-life. OBJECTIVES: This study focuses on the effect of chitosan-based coating and Trachyspermum ammi essential oil on qualitative properties of refrigerated chicken fillet meat. MATERIAL and METHODS: chicken fillets treated with chitosan solution (2 %wv-1) and...