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JSIR Vol.67 [2008] >
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
Starch
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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