Evaluation of the chemical composition of fresh and stored edible aroids
1990
Agbor-Egbe, T. | Rickard, J.E.
The chemical compositions of 32 cultivars of two edible aroid species (Colocasia esculenta var antiquorum and Xanthosoma sagittifolium) were determined. Mean values obtained for both species in g kg-1 dry weight were: crude protein 37.5-73.6, total fat 0.9-8.7, ash 28.7-77.7, crude fibre 4.3-42.0, total sugars 5.9-42.5 and starch 509.1-705.7. The main sugars identified by HPLC were fructose, glucose, sucrose and maltose. The amino acids with the highest concentrations were aspartic acid, glutamic acid and arginine. A significant reduction in starch content (to 39.8-47.4 g kg-1) and increase in total sugars content (to 8.0-11.6 g kg-1) occurred during the storage of cormels for two weeks under tropical ambient conditions (24-29 degrees C; 86-98% RH). No significant differences (P greater than or equal to 0.05) between fresh and stored cormels were found in crude protein and amino acid contents.
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