Simultaneous, rapid, spectrophotometric determination of total starch, amylose and amylopectin
- 1 January 1993
- journal article
- research article
- Published by Wiley in Journal of the Science of Food and Agriculture
- Vol. 63 (1) , 53-57
- https://doi.org/10.1002/jsfa.2740630109
Abstract
A novel spectrophotometric method for the simultaneous measurement of total starch, amylose and amylopectin in lipid‐free samples has been developed using a diode‐array spectrophotometer. It involves measurement of the spectrum of the amylose/amylopectin‐iodide complexes at six wavelengths and calculation of amylose and amylopectin concentrations using multi‐component analysis and a spreadsheet computer program. This method appears to offer some advantages to previous ‘iodine‐blue colour’ assays for the measurement of amylose.Keywords
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