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Evaluation of the Nutritional Quality of Chinese Kale (Brassica alboglabra Bailey) Using UHPLC-Quadrupole-Orbitrap MS/MS-Based Metabolomics

Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 10097, China
Author to whom correspondence should be addressed.
Molecules 2017, 22(8), 1262;
Received: 22 June 2017 / Revised: 25 July 2017 / Accepted: 25 July 2017 / Published: 27 July 2017
PDF [3844 KB, uploaded 27 July 2017]


Chinese kale (Brassica alboglabra Bailey) is a widely consumed vegetable which is rich in antioxidants and anticarcinogenic compounds. Herein, we used an untargeted ultra-high-performance liquid chromatography (UHPLC)-Quadrupole-Orbitrap MS/MS-based metabolomics strategy to study the nutrient profiles of Chinese kale. Seven Chinese kale cultivars and three different edible parts were evaluated, and amino acids, sugars, organic acids, glucosinolates and phenolic compounds were analysed simultaneously. We found that two cultivars, a purple-stem cultivar W1 and a yellow-flower cultivar Y1, had more health-promoting compounds than others. The multivariate statistical analysis results showed that gluconapin was the most important contributor for discriminating both cultivars and edible parts. The purple-stem cultivar W1 had higher levels of some phenolic acids and flavonoids than the green stem cultivars. Compared to stems and leaves, the inflorescences contained more amino acids, glucosinolates and most of the phenolic acids. Meanwhile, the stems had the least amounts of phenolic compounds among the organs tested. Metabolomics is a powerful approach for the comprehensive understanding of vegetable nutritional quality. The results provide the basis for future metabolomics-guided breeding and nutritional quality improvement. View Full-Text
Keywords: Chinese kale; nutritional quality; metabolomics; Quadrupole-Orbitrap MS/MS Chinese kale; nutritional quality; metabolomics; Quadrupole-Orbitrap MS/MS

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Wang, Y.-Q.; Hu, L.-P.; Liu, G.-M.; Zhang, D.-S.; He, H.-J. Evaluation of the Nutritional Quality of Chinese Kale (Brassica alboglabra Bailey) Using UHPLC-Quadrupole-Orbitrap MS/MS-Based Metabolomics. Molecules 2017, 22, 1262.

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