A study on the insecticidal properties of Lansium domesticum peeling extracts

Date of Publication

1984

Document Type

Master's Thesis

Degree Name

Master of Science in Teaching Major in Chemistry

Subject Categories

Chemistry

College

Br. Andrew Gonzalez FSC College of Education

Department/Unit

Science Education

Abstract/Summary

The insecticidal properties of the crude extracts of the peelings of lanzones (Lansium domesticum Correa) on cockroaches is studied in this thesis. The solvents used in the exhaustive extractions were petroleum ether, acetone, methanol and water. The crude petroleum ether extract showed the highest insecticidal activity. Benzene and chloroform were efficient as developing solvent systems in separating the components. One of the active components of the petroleum ether extract was separated and isolated by column chromatography using benzene as eluant. Fraction K, which has only one spot as revealed by the TLC was further characterized by NMR and IR spectroscopy. The NMR revealed the presence of hydrocarbons and ketones as shown by the peaks at high field, i.e., near the peak at s = 0.70 to 4.70. The IR spectrum confirms these compounds.

Abstract Format

html

Language

English

Format

Print

Accession Number

TG02250

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

41 leaves

Keywords

Insecticides -- Research; Extracts; Insect pests -- Control; Plants; Insecticidal

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