Formulation and Evaluation of Achyranthes bidentata Root Extract Based Herbal-insecticide

Abstract

Pesticides are the chemicals most commonly used by humans in the production of many foods worldwide. Most of the pesticides are chemical derived which not only causes different diseases in the human population rather affects the environment too. The natural pesticide obtained from plant-based sources can be considered as an alternative. Achyranthes bidentata is chosen for this current study to formulate an effective pesticide based on plant origin. The root extract of A. bidentata has been prepared and it has been subjected to its phytochemical screening. The functional group present in the extract has been determined by using FTIR and the volatile constituents have been detected by using GCMS. The insect-repellent property of the extract has been investigated using weevil and found to be efficacious. FTIR analysis showed hydroxyl, amine, amide, carbonyl, nitrile, alkanes, alkenes and nitro groups, while GCMS analysis showed benzene, 1-phenyl ethyl alcohol, limonene, toluene. In the insect repellent study, it has been found that A 3% to 15% concentration of A. bidentata extract and duration time of 24, 48 and 72 hours caused 88.33% grain weevils after 72 hours at 10% extract concentration. It can be concluded from the performed studies that, A. bidentata root extract can be effectively used as an insecticide for agricultural purposes.