Authors:
Van Niekerk, C.; Schonfeldt, H.C.; Hall, N., & Pretorius, B.
|
Abstract:
There is a global increase in the production, processing and consumption of potatoes, especially
in developing countries. The scale of the different varieties available today has led to a demand
by end users to have some indication of fit for purpose. Reliable, scientifically validated
objective methods are needed to group potatoes in order to develop such a system. The reliability
of specific gravity, dry matter and starch content and glycaemic index were determined as these
measurements are often used to describe tuber characteristics. However, the reliability of these
methods differed within and between studies. Dry matter content was found to be the most robust
analytical method to group potatoes together. Specific gravity proved to be an unreliable method
due to the lack of standardisation of the method. Glycaemic index delivered different results
using a single cultivar in an inter laboratory study. |
