Studies on the acid hydrolysis of arrow-root (Maranta arundinacea) starch

Date

11-1977

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Lilia S. P. Madamba

Abstract

Arrowroot starch was subjected to acid hydrolysis, and t .c effects of concentration and kind of acid, time and temperature i the reaction were determined. Gelatinized arrowroot starch solutions (1 mg/ml) were hydrolyzed using hydrochloric, sulfuric, and nitric acids, at varying concentrations starch conversion to glucose increased as concentration of acid increased; the highest yield was attained at acid concentration of 1.00N. Nitric and hydrochloric acids were found to achieve higher glucose conversions compared to sulfuric acid at all levels of concentration studied. optimal time of hydrolysis was 120 to 150 minutes using nitric and hydrochloric acids at 1.00N and 100°C heating temperature. hydrolysis was found to decrease with increase In hydrolysis temperature above 100°C. As determined by this study, the 1Pptimal conditions for hydrolysis of arrowroot starch (1 mg/ml and nitric acids at 100°C and 120 minute heating

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1977 C4 L35

Document Type

Thesis

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