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KMID : 0380620200520060587
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Korean Journal of Food Science and Technology
2020 Volume.52 No. 6 p.587 ~ p.594
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Analysis of glucosinolates and their metabolites from napa cabbage (Brassica rapa subsp. Pekinensis) and napa cabbage kimchi using UPLC-MS/MS
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Kim Jae-Cheol
Park Hyo-Sun
Hwang Keum-Taek
Moon Bo-Kyung
Kim Sun-A
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Abstract
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In this study, we analyzed glucosinolates and their metabolites in the inner and outer parts of napa cabbage (NC; Brassica rapa subsp. pekinensis) and napa cabbage kimchi (NKC) using UPLC-ESI-MS/MS. In the extracts from NC and NKC, glucobrassicanapin (m/z 386), glucoalyssin (m/z 450), glucobrassicin (m/z 447), 4-methoxyglucobrassicin (m/z 477), and neoglucobrassicin (m/z 477) were detected using the MS scan mode ([M-H]?), and gluconapin (m/z 372→97), progoitrin (m/z 388→97), glucoiberin (m/z 422→97), 4-methoxyglucobrassicin (m/z 477→97), and neoglucobrassicin (m/z 477→447) were detected using the MS/MS MRM mode ([M-H]?). Ascorbigen (m/z 306→130) and indole-3- carboxaldehyde (I3A; m/z 146→118), which were metabolites of glucobrassicins, were detected using the MS/MS MRM ([M+H]+) mode. The peak intensities of ascorbigen in the extract from the inner and outer parts of NC were significantly higher than those of the NKC extract (p<0.05); however, there was no significant difference in I3A peak intensity between the NC and NKC extracts.
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KEYWORD
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ascorbigen, napa cabbage, glucosinolate, kimchi, UPLC-MS/MS
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