title: Relating genes in the biosynthesis of the polyphenol composition of Andean colored potato collection.
abstract: The objective of this study was to evaluate total antioxidant capacity (TAC), total phenolic content (TPH), and the identification of anthocyanidin and polyphenolic compounds in 13 colored potatoes collected from the Andean region of Bolivia, and understand how the chemical composition correlated with the botanical classification and molecular characterization of genes, ans (anthocyanidin synthase) and stan1 (Solanum tuberosum anthocyanidin synthase), associated with the synthesis of anthocyanidins. The results show the existence of a limited correlation between botanical classification, based on morphological identification and polyphenol composition. No association between genetic grouping of the ans and stan genes and botanical classification was found. However, it was possible to identify a correlation between the ans gene clades and the levels of anthocyanidins as well as of other polyphenols. Thus, this result confirms the concept that potato color can be used in the search for high polyphenol potato cultivars.
authors.affiliation: School of Chemistry Faculty of Pure and Natural Sciences, San Andrés University P.O. Box 303, La Paz, Bolivia ; Food Colloids Group Department of Food Technology, Engineering and Nutrition, Lund University P.O. Box 124, S-221 00, Lund, Sweden.
authors.forename: Leslie
authors.initials: L
authors.lastname: Tejeda
authors.affiliation: School of Chemistry Faculty of Pure and Natural Sciences, San Andrés University P.O. Box 303, La Paz, Bolivia.
authors.forename: Juan Antonio
authors.initials: JA
authors.lastname: Alvarado
authors.affiliation: School of Chemistry Faculty of Pure and Natural Sciences, San Andrés University P.O. Box 303, La Paz, Bolivia.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Dębiec
authors.affiliation: School of Chemistry Faculty of Pure and Natural Sciences, San Andrés University P.O. Box 303, La Paz, Bolivia.
authors.forename: José Mauricio
authors.initials: JM
authors.lastname: Peñarrieta
authors.affiliation: School of Chemistry Faculty of Pure and Natural Sciences, San Andrés University P.O. Box 303, La Paz, Bolivia.
authors.forename: Oscar
authors.initials: O
authors.lastname: Cárdenas
authors.affiliation: Drug Research Institute and Biochemical Faculty of Pharmaceutical and Biochemical Sciences, San Andrés University P.O. Box 303, La Paz, Bolivia.
authors.forename: Maria Teresa
authors.initials: MT
authors.lastname: Alvarez
authors.affiliation: Department of Immunotechnology, Lund University BMC D13, SE-22184, Lund, Sweden.
authors.forename: Aakash
authors.initials: A
authors.lastname: Chawade
authors.affiliation: Food Colloids Group Department of Food Technology, Engineering and Nutrition, Lund University P.O. Box 124, S-221 00, Lund, Sweden.
authors.forename: Lars
authors.initials: L
authors.lastname: Nilsson
authors.affiliation: Food Colloids Group Department of Food Technology, Engineering and Nutrition, Lund University P.O. Box 124, S-221 00, Lund, Sweden.
authors.forename: Björn
authors.initials: B
authors.lastname: Bergenståhl
keywords: Ans and stan genes; anthocyanidins; antioxidant capacity; polyphenolic compounds and purple potatoes