The effective of lantana camara (l.) extract as repellent against rice weevil / Nurul Azalina Muhaini

The Lantana camara is a flowering plant that is used for its decorative qualities. It has a long history of usage in traditional medicine and is widely recognised for its curative effects. The current study was conducted to evalute the effective of Lantana camara leaves extracts (1, 2, 4, 8, 16 μl) as repellent against rice weevil, S. oryzae using filter paper method. L. camara leaves was extracted using Soxhlet extraction method and used n-hexane as the solvent. This study was also carried out to determine the presence of bioactive compounds from L. camara (L) extract using GC-MS. The GC-MS analysis of L. camara (L.) extract reported the presence of Cycloheptasiloxane, tetradecamethyl (27.97%), Benzeneacetic acid, .alpha.,3,4-tris[(trimethylsilyl) oxy]-, trimethylsilyl ester (18.98%), 3-Isopropoxy-1,1,1,7,7,7-hexamethyl-3,5,5-tris(trimethylsiloxy) tetrasiloxane (13.89%), Benzoic acid, 4-methyl-2-trimethylsiloxy-, trimethylsilyl ester (13.05%), and 7-Chloro-10-ethyl-1-[(2-[(2-hydroxyethyl] amino] ethyl] amino]-3- [4- (7.19%) as major compounds. The presence of cycloheptasiloxane, tetradecamethyl- compound as one of cyclic dimethyl polysiloxane that belongs to the class of siloxane in L. camara (L.) extract showed the repellency of S. oryzae as it contained active constituent of insecticidal property.