biodegradable polysacharyd-based film was developed by incorporating pimpinella affinis essential oil (pao) into methyle cellulose (mc) at level of 0.5%, 1% and 1.5% v/v. then, its antimicrobial activity tested against 7 bacteria include staphylococcus aureus (ptcc 1431), pseudomonas aeruginosa (ptcc 1151), pseudomonas putida(ptcc 1691),esherichia coli (ptcc 3315), listeria monocytogenes (ptcc ...

Nowadays, essential oils are used in different products such as food as natural antioxidants, antibacterial and flavoring compounds (1). Essential oils are used as a replacement for chemical preservatives such as butylated hydroxytoluene (BHT) and tertiary butyl hydroquinone (TBHQ) that can threaten human health as cancer promoters (2). Nearly 3000 different essential oils are known today, and ...

results the amount of hgbr2 (0.1% wt/vol) and cdso4 (0.2% wt/vol) were considered as lethal doses for l. monocytogenes ptcc 1297 (serotype 4a). different concentrations of pbo could not kill bacteria yet decreased their growth. the bacteria showed different morphologic and biochemical characteristics under each stressor. objectives the aim of this work was evaluate the growth, surface structure...

the infections risk related to pathogenic germs increases at the present time considering the increased resistance which certain microbes acquire, whose usual antibiotics are ineffective to treat the infectious disease. the aim of this study was to determine antimicrobial effect of the aqueous and ethanolic extracts of lavandula stoechas l. and rosmarinus officinalis l. on listeria monocytogene...

Listeria monocytogenes can cause serious infection and recently, relapse of listeriosis has been reported in leukemia and colorectal cancer, and the patients with Klebsiella pneumoniae are at increased risk of colorectal cancer. Translation initiation codon recognition is basically mediated by Shine-Dalgarno (SD) and the anti-SD sequences at the small ribosomal RNA (ssu rRNA). In this research,...

background most birds probably can carry listeria spp. asymptomatically in their intestines with varying prevalence and can transmit the pathogens to humans. the genus-listeria has two pathogenic species namely, listeria monocytogenes and listeria ivanovii. of these, l. monocytogenes is a well-known cause of abortion, encephalitis and septicaemia in man and animals. listeria ivanovii is an anim...

the objective of this study was to isolation and characterization of listeria species and determines listeria monocytogenes serotypes in fresh fish, shrimp, crab and lobster in isfahan and shahrekord, iran. from september 2010 to april 2011, a total of 300 samples of fresh fish, shrimp, crab and lobster were obtained from randomly selected retail stores in isfahan and shahrekord, iran. the samp...