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Metabolic Profiling of Bulgarian Potato Cultivars.


ABSTRACT: Potatoes (Solanum tuberosum L.) are the fourth most economically important crop in the world. They have a short period of vegetation and are an excellent source of carbohydrates, amino acids, vitamins, organic acids, minerals and phenolics as antioxidant substances. Potato can be a major dietary source of various bioactive compounds. In this study, we applied gas chromatography coupled with mass spectrometry (GC-MS) metabolite profiling to classify eight Bulgarian potato cultivars bred in the Maritsa Vegetable Crops Research Institute (VCRI), Plovdiv, according to their metabolite contents. Altogether, we determine their flavonoids/phenolics to evaluate their nutritive quality for the breeding program with the target of determining strong health-promoting compounds. The "Kalina" cultivar is highlighted as the best one with the highest number of metabolites, containing 14 out of the 26 evaluated; it was selected as the highest-quality cultivar, compared with the other seven cultivars studied. According to the grouping of the cultivars in principal component analysis PCA, their positive distribution is explained mainly by them having the highest contents of aminobutyric and isocitric acids, methionine and alanine and lower levels of fumaric acid, pyroglutamic acid and glycine, in contrast to the cultivars distributed negatively, which had high contents of carbohydrates and relatively low contents of most of the amino acids. The highest number of amino acids was found in the cultivar "Kalina", followed by "Perun" and "Bor". The highest number of carbohydrates was found in "Pavelsko" and "Iverce", while the prominent accumulation of organic acids was found in "Kalina", "Bor" and "Rozhen". The highest number of flavonoids in the flesh of the tubers was found in the cultivars "Nadezhda" and "Pavelsko", followed by "Bor". The highest ratio of flavonoids/phenolics in the flesh was found in "Pavelsko" and in "Nadezhda", followed by "Iverce".

SUBMITTER: Tomlekova N 

PROVIDER: S-EPMC9265564 | biostudies-literature |

REPOSITORIES: biostudies-literature

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