Potato biodiversity: A linear discriminant analysis on the nutritional and physicochemical composition of fifty genotypes. (30th May 2021)

• Record Type: Journal Article
• Authors: Sampaio, Shirley L.; Barreira, João C.M.; Fernandes, Ângela; Petropoulos, Spyridon A.; Alexopoulos, Alexios; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.; Barros, Lillian
• Is Part Of: Food chemistry. Volume 345(2021)
• Publication Date: 2021-05-30
• Subjects: CT cultivation type -- FC flesh colour -- LDA Linear discriminant analysis -- SFA saturated fatty acids -- MUFA monounsaturated fatty acids -- PUFA polyunsaturated fatty acids; Oxalic acid (PubChem CID: 971) -- Malic acid (PubChem CID: 525) -- Citric acid (PubChem CID: 311) -- Fructose (PubChem CID: 2723872) -- Glucose (PubChem CID: 5793) -- Sucrose (PubChem CID: 5988) -- Trehalose (PubChem CID: 7427).; Potato -- Solanum tuberosum L. -- Nutritional analysis -- Physicochemical characterization -- Linear discriminant analysis -- Biodiversity -- Food security; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2020.128853
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: 50 potato genotypes from 24 countries of origin were studied. The vast biodiversity of potato reflects in differences in nutrient content. Cultivated varieties and breeder lines showed the highest similarity. Physicochemical profiles were highly correlated with the different tuber colours. Landraces and Andean accessions could be considered as agricultural alternatives. Abstract: Fifty potato genotypes from twenty-four different countries of origin, four different flesh colours (yellow, purple, red and marble) and different cultivation types (Andean accessions, landraces, breeder lines and cultivated varieties) were studied in terms of their nutritional and physicochemical characteristics. In general, cultivated varieties and breeder lines showed the highest similarity (slight differences only in some particular fatty acids distributions: C10:0, C12:0 and C22:0) concerning the physicochemical parameters assayed in this work, independently of the geographical origin or tuber flesh colour of these genotypes. Nonetheless, some of the studied landraces and Andean accessions proved to be similar enough to be considered as genotypes with good potential for commercial cultivation. These results can contribute to the supply of new potato genotypes into sustainable farming systems, supporting the protection of potato biodiversity, particularly Andean accessions, landraces and coloured genotypes (red or purple flesh) which are not widely cultivated so far.