Potentiometric titration for determination of amylose content of starch – A comparison with colorimetric method
2012
Duan, Derek X. | Donner, Elizabeth | Liu, Qiang | Smith, Damon C. | Ravenelle, François
Amylose, the amount of which varies significantly depending on the source, is one of the key components of starch. The proportion of the essentially linear amylose and the highly branched amylopectin greatly influences the physico-chemical properties of starch. In this study, potentiometric titration using an auto-titrator and colorimetric methods were compared for determining amylose contents of a variety of starch samples. Potentiometric titration results for starches from a variety of botanical sources were within the reported literature ranges while the colorimetric method seemed to overestimate amylose content.
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