Antibacterial activity of different Egyptian honeys in relation to some bee products

The antibacterial activities of different types of honey in relation to some bee products were investigated against 5 species of pathogenic bacteria belonging to Gram positive and Gram negative bacteria. The honey types were Citrus, Cotton Sesame and Clover. The bee products were royal jelly and bee venom. The bacteria were Staphylococcus aureus. Streptococcus faecalis, Corynebacteria pseudotuberculosis, Pseudomonas aeruginosa and E.coli The influence of the storage was studied in case of clover honey from season of 1965 and 1995. Honey was used in different concentration. The results revealed that the different Egyptian honey, royal jelly and bee venom were effective antibacterial against different pathogenic bacteria. It was clear that the different types of honey as well royal jelly and bee venom were less effective against E. coli than other bacteria

Antibacterial activity of the secretory materials of some scale insects [Coccoidea-Homiptera] [Applied]

The antibacterial activity of secretory materials present in the scale cover and produced materials of certain scale insects were examined against Gram negative and Gram positive bacteria. The scale insect included two soft scales insects; Icerya aegyptiaca Douglas and Ceroplastes rusci L. and three hard scales insects; Aonidiella aurantii Maskell, Lepidosaphes beckii Newman and Parlatoria zizyphus Lucas. Secretions of the scale insects were extracted with ethanol, acetone and DMSO. The antibacterial activities of extracted secretions of insects were investigated against Gram positive and negative bacteria. The Gram negative bacteria included Escherichia coli and Pseudomonas aeruginosa. The Gram positive bacteria included Staphylococcus aureus, Streptococcus dysgalacticae and Corynebacterium pseudotuberculosis. It was obvious that no antibacteria! activity of all insect secretions extracted with DMSO against all pathogenic bacteria except secretion of A. aurantii which showed activity against Staphylococcus aureus. But the extraction of the secretion of the scale insects extracted with acetone and ethanol were varied according to the type of insect secretion and type of pathogenic bacteria. Results of the experiments showed that the ethanol was the most suitable solvent for extraction of scale insect secretion. The antibacterial activity was varied according to the species of the scale insects