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BACTERIOCINS Bacteriocins can be considered as proteinaceous antibiotics displaying a high degree of target specificity, although many have a very wide spectrum of activity. These are the most abundant bioactive antimicrobial peptides produced by certain bacteria and are found in all major phylogenetic bacterial lineages. These bacteriocins are very useful in the food industry. They inhibit the growth of most of other microorganisms including common human pathogens, thus increasing the shelf life of food as well as act as natural preservatives. Bacteriocins from gram positive organisms, such...

Teaching is a very rewarding profession but it has its stressful elements too. Inspections, assessments, reports, workshops are all potentially stressful areas. The purpose of the present study was to measure the stress of Elementary teachers. The questionnaire was consisted on different sections; the factors of stress for the teachers, effects of stress and techinques which are used by the teachers to relieve their stress. After the analysis of data, results showed that the stress factor decreased the teachers efficiency. The most stressful item for the teachers was students less attention...