Isolation and characterization of polysaccharides from water hyacinth (Eicchornia crassipes)

Date

10-1997

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Maxima E. Flavier

Abstract

Proximate analysis of the water hyacinth stalk/leaves and roots showed a high value for the nitrogen-free extract. Total soluble sugar (air-dry basis) is low, 5.60./0 for the stalk/leaves and 0.99% for the roots. The starch content (air-dry basis) are 16.73% and 13.83% for the stalk/leaves and roots, respectively. Fractionation of polysaccharides by sequential extraction with water at room temperature and at 50°C, followed by 6.25 N NaOH treatment, showed the highest fractionation yield for the final residue (stalk/leaves: 74.16%; roots: 50.24%). Thus, the major component of the plant is of the cellulosic type of polysaccharides. Monosaccharide composition of the raw material and different fractions were identified and quantified as alditol acetates by gas chromatography. Results showed the predominance of glucose though arabinose, xylose, galactose and mannose are also present substantially in some fractions.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1997 C4 M37

Document Type

Thesis

This document is currently not available here.

Share

COinS