Bacteriocins are ribosomally synthesized antimicrobial peptides produced by bacteria, which have the ability to kill or inhibit other bacteria. Many bacteriocins are produced by food grade lactic acid bacteria (LAB). Indeed, the prototypic bacteriocin, nisin, is produced by Lactococcus lactis, and is licensed in over 50 countries. With consumers becoming more concerned about the levels of chemi...

BACKGROUND Cockroaches are among the medically important pests found within the human habitations that cause serious public health problems. They may harbor a number of pathogenic bacteria on the external surface with antibiotic resistance. Hence, they are regarded as major microbial vectors. This study investigates the prevalence and antibiotic resistance of Gram-negative pathogenic bacteria s...

food-borne botulism is one of the dangerous food poisonings in human in the world. the specimens of 115 patients (serum and stool) with clinical symptoms of botulism, who were inpatient and outpatient were collected at some medical centers in tehran and other areas of iran, between april 1984 to august 1994. in this survey, specimens of 73 patients showed the toxin and spore of c.botulinum. clo...

The microbial population of the intestinal tract is a complex natural resource that can be utilized in an effort to reduce the impact of pathogenic bacteria that affect animal production and efficiency, as well as the safety of food products. Strategies have been devised to reduce the populations of food-borne pathogenic bacteria in animals at the on-farm stage. Many of these techniques rely on...

CONTEXT Diarrhea is a common disease across the world. According to WHO, every year about two billion cases of diarrhea are reported in the world. It occurs mainly in the tropical regions and is a main cause of morbidity and mortality, particularly in young children and adults. EVIDENCE ACQUISITION One of the major causes of diarrheal diseases is bacteria; detection of pathogenic bacteria is ...

Vibrio parahaemolyticus is a food-borne pathogen that naturally inhabits both marine and estuarine environments. Free-living protozoa exist in similar aquatic environments and function to control bacterial numbers by grazing on free-living bacteria. Protozoa also play an important role in the survival and spread of some pathogenic species of bacteria. We investigated the interaction between the...

Aptamers are single stranded oligonucleotides that forms 3 dimensional structure and binds to target with high affinity and specificity. The target that aptamers can bind to is vast. In this project, the aptamers selected for two serotypes of Salmonella bacteria that are causes a widespread of food borne illness (Salmonella Enteritidis (SE) and Salmonella Typhimurium (ST)). These aptamers were ...