microbiological quality of drinking water at eight water treatment plants.eight drinking water treatment plants were sampled monthly during one year to evaluate the removal of bacterial indicators, new indicators and some pathogenic bacteria. six plants are allocated along the nile river at cairo segment and the two others on ismailia canal. in this study many parameters were determined; the classical bacterial indicators (total bacterial counts at 22 and 37 degrees c, total coliforms, faecal coliforms and faecal streptococci) show the same trend in all plant intakes ...200111798415
egyptian propolis: 2. chemical composition, antiviral and antimicrobial activities of east nile delta propolis.three propolis samples from east nile delta, egypt were collected. propolis samples were investigated by gc/ms,103 compounds were identified, 20 being new for propolis. dakahlia propolis was a typical poplar propolis but it contained two new caffeate esters and two new triterpenoids. ismailia propolis was characterized by the presence of new triterpenic acid methyl esters and it did not contain any aromatic acids, esters and flavonoids. sharkia propolis was characterized by the presence of caffe ...200212064745
egyptian propolis: 3. antioxidant, antimicrobial activities and chemical composition of propolis from reclaimed lands.the free radical scavenging effect of two propolis samples collected from reclaimed land, egypt as well as of vitamin c and caffeic acid in 1,1-diphenyl-2-picrylhydrazyl (dpph) free radical system was determined. the antimicrobial (staphylococcus aureus; escherichia coli and candida albicans) activity was also investigated. the results of the free radical scavenging effect of el-saff and ismailia propolis showed a concentration-dependent activity. the antioxidant activity was varied according to ...200212064746
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