STUDY THE BIOLOGICAL ACTIVITY FOR WATER EXTRACT OF Datura stramoniumo L. PLANT RADIATED BY ULTRAVIOLET RAY TO GROWTH OF SOME BACTERIAL PATHOGENIC GENISES

Abstract

Abstract: This study is about the effectiveness of aqueous extract of Datura stramoniumo L. plant leaves before and after the irradiating of the extract by Ultraviolet for wave lengths (254nm , 365nm) and for periods of time, one hour, two hours and three hours, on some pathogenic bacterial isolation for Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and measuring the change in electrical conductivity and hydrogenous exponent (PH).The study showed non-significant changes in the electrical conductivity of the irradiated extract by Wave length (254nm) and (365nm). The hydrogenous exponent, also, showed non-significant changes at wave length (365nm), while the changes were obvious at wave length (254nm). The study of vital effectiveness showed the unsensitivity of the extract before and after irradiation against bacteria , Pseudomonas aeruginosa , Staphylococcus, aureus, but it showed the sensitivity against bacteria , Escherichia coli before irradiation, but the sensitivity disappeared after the irradiation at a wave length (254nm), either when Wave length of (365nm) did not show any significant change.