Physicochemical characterization and infrared spectroscopy of Tetragonula biroi propolis from selected areas in Laguna, Batangas, and Quezon Province

Date

5-2013

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Jose Rene L Micor

Co-adviser

Analinda M Fajardo

Abstract

This study evaluated the physico-chemical attributes of Tetragonula biroi Friese bee propolis from eight different locations in Laguna, Batangas, and Quezon Province. The physico-chemical analyses revealed that the %fry extract of the EEP samples ranged from 0.3579% to 0.7345%, the oxidizing time ranged from 35s to 59s, the amount of flavonoids in %quercetin ranged from 0.0705% to 0.2129, and the percentage of phenolics ranged from 2.097% to 2.497%. All EEP samples exhibited positive results for the solubility and homogeneity tests in lead (II) acetate and NaOH, which confirms the presence of tannins and phenolics, respectively. Peaks in the IR spectra of all samples showed that the functional groups present in the compounds correspond to the functional groups found in the structures of flavonoids and polyphenolics, which can indicate the presence of flavonoids and polyphenolics in the samples. In conclusion, results of the physico-chemical and FT-IR analyses confirm the presence of polyphenolics and flavonoids in the PEP samples. Keywords: Propolis. Tetragonula biroi, Fourier- Transform Infrared spectroscopy. flavonoids. polyphenolics

Language

Filipino

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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