Tomlekova Nasya, Mladenov Petko, Dincheva Ivayla, Nacheva Emilya
Maritsa Vegetable Crops Research Institute, Agricultural Academy, 32 Brezovsko Shossee Street, 4003 Plovdiv, Bulgaria.
Agrobioinstitute, Agricultural Academy, 8 Dragan Tzankov Boulevard, 1164 Sofia, Bulgaria.
Foods. 2022 Jul 4;11(13):1981. doi: 10.3390/foods11131981.
Potatoes ( 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".
马铃薯（Solanum tuberosum L.）是世界上经济价值第四高的作物。它们生长周期短，是碳水化合物、氨基酸、维生素、有机酸、矿物质和作为抗氧化物质的酚类物质的优质来源。马铃薯可以是各种生物活性化合物的主要饮食来源。在本研究中，我们应用气相色谱-质谱联用（GC-MS）代谢物谱分析，根据其代谢物含量对在普罗夫迪夫的马里察蔬菜作物研究所（VCRI）培育的八个保加利亚马铃薯品种进行分类。我们总共测定了它们的黄酮类化合物/酚类物质，以评估其营养品质，用于育种计划，目标是确定具有强大健康促进作用的化合物。“卡利娜”品种被突出显示为代谢物数量最多的最佳品种，在评估的26种代谢物中含有14种；与其他七个研究品种相比，它被选为品质最高的品种主成分分析（PCA）中品种的分组情况，它们的正向分布主要是由于它们具有最高含量的氨基丁酸和异柠檬酸、蛋氨酸和丙氨酸，以及较低水平的富马酸、焦谷氨酸和甘氨酸，相比之下，负向分布的品种碳水化合物含量高，大多数氨基酸含量相对较低。在“卡利娜”品种中发现的氨基酸数量最多，其次是“佩伦”和“博尔”。在“帕韦尔斯科”和“伊韦尔切”中发现的碳水化合物数量最多，而在“卡利娜”、“博尔”和“罗真”中发现有机酸显著积累。在“娜杰日达”和“帕韦尔斯科”品种的块茎果肉中发现的黄酮类化合物数量最多，其次是“博尔”。在果肉中黄酮类化合物/酚类物质的最高比例出现在“帕韦尔斯科”和“娜杰日达”中，其次是“伊韦尔切”。
