Potato biodiversity: A linear discriminant analysis on the nutritional and physicochemical composition of fifty genotypes

Shirley L Sampaio; João C M Barreira; Ângela Fernandes; Spyridon A Petropoulos; Alexios Alexopoulos; Celestino Santos-Buelga; Isabel C F R Ferreira; Lillian Barros

doi:10.1016/j.foodchem.2020.128853

Potato biodiversity: A linear discriminant analysis on the nutritional and physicochemical composition of fifty genotypes

Food Chem. 2021 May 30:345:128853. doi: 10.1016/j.foodchem.2020.128853. Epub 2020 Dec 10.

Authors

Shirley L Sampaio¹, João C M Barreira², Ângela Fernandes², Spyridon A Petropoulos³, Alexios Alexopoulos⁴, Celestino Santos-Buelga⁵, Isabel C F R Ferreira⁶, Lillian Barros⁷

Affiliations

¹ Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; Grupo de Investigación en Polifenoles (GIP-USAL), Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno s/n, 37007 Salamanca, Spain.
² Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
³ Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 38446 Nea Ionia, Magnissia, Greece.
⁴ University of the Peloponnese, Department of Agriculture, University of Peloponnese, 24100 Kalamata, Greece.
⁵ Grupo de Investigación en Polifenoles (GIP-USAL), Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno s/n, 37007 Salamanca, Spain.
⁶ Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal. Electronic address: iferreira@ipb.pt.
⁷ Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal. Electronic address: lillian@ipb.pt.

PMID: 33340900
DOI: 10.1016/j.foodchem.2020.128853

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.

Keywords: Biodiversity; Citric acid (PubChem CID: 311); Food security; Fructose (PubChem CID: 2723872); Glucose (PubChem CID: 5793); Linear discriminant analysis; Malic acid (PubChem CID: 525); Nutritional analysis; Oxalic acid (PubChem CID: 971); Physicochemical characterization; Potato; Solanum tuberosum L.; Sucrose (PubChem CID: 5988); Trehalose (PubChem CID: 7427)..

MeSH terms

Biodiversity*
Chemical Phenomena*
Discriminant Analysis
Genotype*
Nutritive Value*
Plant Tubers / chemistry
Solanum tuberosum / chemistry*
Solanum tuberosum / classification