Food Science and Biotechnology
→ Food Science and Biotechnology 2017 ; 26(5): 1379-1389
Compositional analyses of diverse phytochemicals and polar metabolites from different-colored potato (Solanum tubersum L.) tubers
Wonhui Lee1, Yunsoo Yeo1, Seonwoo Oh1, Kwang-Soo Cho2, Young-Eun Park2, Soon Ki Park3, Si Myung Lee1, Hyun Suk Cho1, Soo-Yun Park1
1National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, Jeonbuk 54874, Korea, 2National Institute of Crop Science, Rural Development Administration, Pyeongchang, Gangwon 25342, Korea, 3College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea
Lipophilic bioactive compounds and hydrophilic primary metabolites from potato (solanum tubersum L.) tubers with different-colored flesh (white-, yellow-, red-, and purple) were characterized. The carotenoid content was relatively higher in red-colored potatoes, in which lutein was most plentiful. Among the other lipophilic compounds analyzed, including policosanols, tocopherols, and phytosterols, octacosanol was measured in the largest amount, followed by β-sitosterol, irrespective of color variations. Forty-three hydrophilics consisting of amino acids, organic acids, sugars, and sugar alcohols and 18 lipophilics were subjected to data-mining processes. The results of multi-variate statistical analyses clearly distincted the different varieties and separated red-fleshed potatoes from other color-fleshed potatoes according to abundance of amino acids, sugars, and carotenoids. This study confirmed the metabolic association-related biochemical pathway between metabolite characteristic and color differences in potato tubers. These results can facilitate understanding the metabolic differences among diverse colored potatoes and provide fruitful information for genetic engineering of potato cultivars.
Metabolomics, Multivariate analysis, Phytochemicals, Potato, Primary metabolites
Food Science and Biotechnology 2017 ; 26(5): 1379-1389