eng Ansari Education and Research Society Journal of Ultra Chemistry 0973-3450 2319-8036 June 2008 4 1 95 98 juc 768 article Jaya Jain 1 Department of Chemistry, L.R.P.G. Colleg, Sahibbad, Ghaziabad, 201 005 (INDIA) <p style="text-align: justify;">Ancient scriptures on Ayurveda recommended medicinal use of <em>O. americanum.</em> Current investigator evaluates paradoxical nature of <em>O. americanum.</em> The toxic effects of plant extract were studied on the life cycle, growth and mortality of beetle <em>Tribolium confusum</em> in stored rice grain. The survival rate of beetle is significantly reduced in the grains treated with leaves of plant extract. Metals in plant extract were found to be as zinc (88 &micro;g/g), iron (120 &micro;g/g), copper (56 &micro;g/g) and manganese (21 &micro;g/g). These trace metals impart therapeutic values to this herb specified in Indian Ayrvedic Medicinal System.<br /> &nbsp;</p> https://journalofchemistry.org/paper/768/ O. americanum T. confusum Copper Zinc Manganese