The effect of pretreatment and substrate concentration on the acid saccharification of cassava starch

Date

5-1982

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Lilia S. P. Madamba

Abstract

The effects of pretreatment, substrate concentration and reaction time on the acid saccharification of cassava flour were determined. Starch suspensions with concentration varying from 1-60% war, hydrolyzed using 1A HCl at 100'0 for a duration of 15-120 minute. Pretreatment of starch was done by heating starch suspension at 70C for 15 minutes.

Pro-gelatinized starch showed higher efficiency of con-version we compared to the ungelatinized; the difference being significant at 5% and 8% substrate concentrations.

Increasing substrate concentration resulted to an increase in glucose concentration in hydrolyzate but a decrease in saccharification efficiency. Optimum reaction time observed was 90 minutes.

Highest saccharification efficiency wan 939 when 10% starch suspension was hydrolyzed for 90 minutes. With a starting concentration of 60%, about 12% glucose was obtained.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1982 A13 R69

Document Type

Thesis

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