Phytochemical investigation of the flowers and leaves of acalypha hispida burm. f. (family Euphorbiaceae) and its implications to chemistry education

Date of Publication

1989

Document Type

Dissertation

Degree Name

Doctor of Philosophy in Science Education Major in Chemistry

Subject Categories

Chemistry

College

Br. Andrew Gonzalez FSC College of Education

Department/Unit

Science Education

Thesis Adviser

Wyona C. Patalinghug

Defense Panel Chair

Melecio C. Deauna

Defense Panel Member

Gerardo C. Janairo
Consolacion Y. Ragasa
Elizabeth S. Ong

Abstract/Summary

This study determines the presence of some groups of natural products in the plant, Acalypha hispida Burm. f. and to show its implication and relation to chemistry education. The determination was done by subjecting the ethanolic extracts of the flowers and the leaves of the plant to phytochemical screening by thin-layer chromatographic technique (Method I) and precipitation and color reactions in test tube (Method II). The results of the phytochemical screening showed that Acalypha hispida Burm. f. contain the following groups of natural products: flavonoids, tannins, coumarin, anthraquinones, steroids and saponins, triterpenoids, cardenolides and bufadienolides. The concentrated extracts from the flowers were subjected to separation by quick column and ordinary column chromatography. Six isolates were obtained. An attempt was made to characterize four isolates through qualitative tests, UV, IR, and NMR spectroscopy. The spectral analysis showed that an isolate is an aliphatic ester and a second isolate is its impure form. The two isolates have similar IR and NMR spectra but one has a wide range of melting point. Conclusive characterization of the other isolates was not achieved because of their minimal quantities. However, results of preliminary analysis indicated that one is a flavonoid.

Abstract Format

html

Language

English

Format

Print

Accession Number

TG01659

Shelf Location

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

Physical Description

131 leaves, 28 cm.

Keywords

Euphorbiaceae--Analysis; Botanical chemistry

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