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Kinetic studies on acid catalysed hydrolysis of starch
B BEJ, R K BASU, S N ASH
Published in NATL INST SCIENCE COMMUNICATION-NISCAIR
2008
Volume: 67
   
Issue: 4
Pages: 295 - 298
Abstract
Acid hydrolysis of wheat flour (particle size, 4 μm) was carried out in a batch reactor between 75-95°C at varying acid concentrations (pH 2-5). Maximum (42%) conversion of starch to reducing sugar was obtained at 95°C and pH 3. Reaction follows First-order rate equation with respect to starch concentration and dependence of reaction rate constant κ on pH is incorporated. Activation energy (ΔE) and frequency factor (A) of reaction were 7806 R and 6.583×106[1/f (pH)] respectively. Time dependent conversion was observed with variation of temperature, pH and initial starch concentration within relative error of 19%.
About the journal
JournalJournal of Scientific and Industrial Research
PublisherNATL INST SCIENCE COMMUNICATION-NISCAIR
ISSN0022-4456