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JSIR Vol.67(04) [April 2008] >

Title: Kinetic studies on acid catalysed hydrolysis of starch
Authors: Bej, Barnali
Basu, R K
Ash, S N
Keywords: Acid hydrolysis
Batch reactor
Kinetic studies
Wheat flour
Issue Date: Apr-2008
Publisher: CSIR
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 k 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%.
Page(s): 295-298
ISSN: 0022-4456
Source:JSIR Vol.67(04) [April 2008]

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