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Open AccessArticle

Comparative Phytochemical Analyses and Metabolic Profiling of Different Phenotypes of Chinese Cabbage (Brassica Rapa ssp. Pekinensis)

1
Max-Planck-Institute of Molecular Plant Physiology, Am Müehlenberg 1, 14476 Potsdam-Golm, Germany
2
Department of Crop Science, Chungnam National University, 99 Daehak-Ro, Yuseong-gu, Daejeon 34134, Korea
3
National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeonbuk 55365, Korea
4
Division of Life Sciencesand Bio-Resource and Environmental Center, Incheon National University, Incheon 406-772, Korea
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Foods 2019, 8(11), 587; https://doi.org/10.3390/foods8110587
Received: 13 October 2019 / Revised: 9 November 2019 / Accepted: 13 November 2019 / Published: 19 November 2019
This study aimed to comprehensively examine the interface between primary and secondary metabolites in oval- and rectangular-shaped Chinese cabbage (Brassica rapa ssp. pekinensis) using gas chromatography coupled with time-of-flight mass spectrometry (GC-TOFMS) and high-performance liquid chromatography (HPLC). In addition to differences in shape, there was significant morphological variation between the two cultivars. The rectangular variety had greater height and deeper green color, whereas the oval variety had more leaves and greater width. A total of 42 primary metabolites identified by GC-TOFMS were subjected to partial least-squares discriminant, which indicated significant differences in the primary and secondary metabolisms of the two cultivars. Furthermore, total glucosinolate and phenolic contents were higher in the oval cultivar, whereas the rectangular cultivar contained a higher level of total carotenoids. This metabolome study comprehensively describes the relationship between primary and secondary metabolites in the oval and rectangular cultivars of Chinese cabbage and provides information useful for developing strategies to enhance the biosynthesis of glucosinolates, phenolics, and carotenoids in Chinese cabbage. Additionally, this work highlights that HPLC and GC-TOFMS–based metabolite profiling is suitable techniques to determine metabolic differences in Chinese cabbage. View Full-Text
Keywords: Brassica rapa ssp. pekinensis; Chinese cabbage; primary metabolite; secondary metabolite; glucosinolate; phenolics; carotenoid Brassica rapa ssp. pekinensis; Chinese cabbage; primary metabolite; secondary metabolite; glucosinolate; phenolics; carotenoid
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Park, C.H.; Yeo, H.J.; Park, S.-Y.; Kim, J.K.; Park, S.U. Comparative Phytochemical Analyses and Metabolic Profiling of Different Phenotypes of Chinese Cabbage (Brassica Rapa ssp. Pekinensis). Foods 2019, 8, 587.

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