Author(s):

Asnake G. Ede, Abebe G. Demissie

Abstract: This study reports the characterization of biocide from Jatropha (Jatropha curca) and castor (Ricinus Communius L) seeds oil. The biocide potential of the seeds oil was evaluated against termite(Odontotermes obesus) and cockroach (Blattela germanica). The bioassay study showed that Jatropha 10% oil caused 100% mortality in 48 hrs and 72 hrs against termite and cockroach, respectively. Castor 10% oil caused 100% mortality in 60hrs and 72 hrs against termite and cockroach, respectively. The LD50 was determined to be 0.64% and 1.24% for termite and cockroach, respectively for jatropha oil after 72hrs exposure. It was determined to be 1.43% and 1.08% for termite and cockroach respectively for castor oil. The biocidal potential of the oil is statistically significant (p<0.05) when compared with blank and solvent controls at all concentration tested. Various physicochemical parameters were also evaluated in accordance with American standard testing method specifications.

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