Business Type : Research and Development
Last Position : Researcher
Period :
June 2020 to March 2021
Job Description :
-Evaluated contact and oral toxicity of crude ethanol extract from Abrus precatorius seeds against adult rice weevils at 4 concentrations (25–100% w/v), 3 replicates each.
-Prepared extract by 7-day ethanol maceration, vacuum rotary evaporation, and drying at 45 °C, adapted from published protocols.
-Found extract degradation during storage; studied storage methods and re-extracted, storing extracts in amber containers to protect them from light.
-Analyzed data with Abbott's formula, DMRT, and Probit analysis; found a 7-day contact LC₅₀ of 57.14% w/v.
-Reviewed research on the mechanisms of action and applications of key compounds (flavonoids, phenolics, terpenoids, steroids, alkaloids) found in Abrus extract.