Efficiency of anise Pimpinella anisum extract on biological activity of Tribolium castaneum and its antioxidant functional

The red flour beetles Tribolium castaneum is one of the most important pests of stored products, to control this pests plant extracts are suitable components as alternate for chemical pesticides. On the other hand herbs as natural resources that are antioxidant properties, The attention of researchers for use in the food and biological systems are located. In this research theefficiency of Pimpinella anisum extract on biological activity of anise Tribolium castaneum and its antioxidant functional is evaluated. In this study, the effect of seed extract of anisum on nutritional indices of adults T.castaneum, in 3 concentrations 50, 75 and 100 µl and respiratory toxicity effects of extracts ( 50, 89, 158, 281, 500 µl of extract per liter of air) was in vitro (29 ± 1°C and 65 ± 5% R.H.). Also the antioxidant effects of P.anisum was investigated by two methods, radical scavenging, DPPH (2, 2-diphenyl-1-picrylhydrazyl) method and reducing power of iron method. Nutrition a lindices showed that the highest and lowest concentration, respectively, has 86/94% and 68/82% inhibition of feeding. The highest mortality concentration was 500 µl/L of air at 24 hours. The required concentration to 50% mortality of population (LC50) at 24 hours after treatment was 215/19 µl/L of air. In DPPH test, the 50% inhibitory concentration of leaf extract was higher than seed extract, the same result was obtained from the power reducing of iron test.