Tecoma stans: A noxious weed put to beneficial use

Tecoma stans belongs to family Bignoniaceae native to America is an ornamental tree, commonly known as yellow bells. In the Global Invasive Species Database (GISD, 2008), it has been listed as a noxious weed in South Africa, Australia and America (prohibited plants that needs to be controlled). This type of weeds serves no economic purpose and possesses characteristics that are harmful to animal, environment and even human beings. A close literature survey revealed that Tecoma stans is not a toxic plant as it is used as a remedy for diabetes and moreover for feeding cattle and goats in Mexico and are extensively employed in the Mexican traditional medicine. There are number of bioactive compounds which have medicinal value from almost all parts viz leaves, fruits, flowers. The present investigation is just a first step to compare the bactericidal activity of plant leaves against standard human pathogenic strains along with phytochemical assay which are key route to the efficacy of plants in antimicrobial aspects. Zinc nanoparticle were synthesized and evaluated for increased or decreased efficacy of antimicrobial activity against four bacterial pathogens UV visible spectroscopy resulted in a peak at 396nm which confirmed the synthesis of zinc nanoparticles.