Nutritional quality and postharvest greening of tubers from potato cultivars

Abstract

The objective of this work was to evaluate the physicochemical characteristcs, nutritional quality, and susceptibility to postharvest greening of tubers from potato cultivars. A randomized complete block design with five replicates was used. Treatments consisted of 11 potato cultivars (Ágata, Ambra, Annabelle, Asterix, Atlantic, Cupido, Daisy, Fontane, Innovator, Markies and Voyager). Cultivars Ágata, Ambra, Annabelle, Cupido, and Voyager have the lowest pulp firmness (6.82 to 8.25 N) and low dry matter (14.46 to 17.57%), carbohydrate (10.97 to 12.51%), and starch content (10.21 to 12.26%), appropriate for the fresh market, preparing pasta, and culinary use. Cultivars Atlantic, Fontane, and Innovator have firm pulp (9.14 to 9.55 N) and high dry matter (19.68 to 21.63%), carbohydrate (14.49 to 15.90%), and starch content (14.29 to 15.74%), suitable for frying. Cultivars Asterix and Markies show intermediate levels of these characteristics and are suitable for making pasta and frying. Cultivars Innovator and Markies have better nutritional quality with high content of minerals (P, K, Mg, Cu, and Mn) and protein, while cultivars Ágata and Ambra have lower nutritional quality and protein content. Cultivar Voyager has higher postharvest greening than Annabelle, Fontane, Markies, Ambra and Atlantic.