Compositional analyses of diverse phytochemicals and polar metabolites from different-colored potato (Solanum tubersum L.) tubers

Wonhui Lee, Yunsoo Yeo, Seonwoo Oh, Kwang Soo Cho, Young Eun Park, Soon Ki Park, Si Myung Lee, Hyun Suk Cho, Soo Yun Park

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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 multivariate 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.

Original languageEnglish
Pages (from-to)1379-1389
Number of pages11
JournalFood Science and Biotechnology
Volume26
Issue number5
DOIs
StatePublished - 1 Oct 2017

Keywords

  • Metabolomics
  • Multivariate analysis
  • Phytochemicals
  • Potato
  • Primary metabolites

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