New natural public health insecticide from salvia officinalis L'

ABSTRACT

5-hydroxy 6,7,3,4-tetramethoxy flavone, the toxic nature plant compound, was isolated from Salvia officinalis and tried against 7 insect species hazardous to public health. The LD50 values indicated that isolated flavone was toxic to house flies than American cockroaches, while it was non-toxic to German cockroaches. But for the LC50 culex adults and human head lice were most susceptible followed by human fleas and bed bugs. A direct parallel relation was found between toxicity and rate of penetration