Journal
FOOD CHEMISTRY
Volume 128, Issue 4, Pages 1115-1120Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2010.11.102
Keywords
Korean Chinese cabbage; Glucosinolates; LC-ESI-MS; Metabolic profiles
Funding
- Korea government (MEST) [R01-2007-000-21022-0]
- National Research Foundation of Korea [R01-2007-000-21022-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Glucosinolates (GSLs) have attracted major interest due to the chemopreventive properties of some of their transformation products. GSLs in the seeds and edible parts of Korean Chinese cabbage (Brassica campestris L. ssp. pekinensis) were identified and quantified by LC-ESI-MS and LC-UV. As a result, nine GSLs were identified: progoitrin, glucoraphanin, glucoalyssin, gluconapin, 4-hydroxy-3-indolylmethyl, glucobrassicanapin, glucoerucin, glucobrassicin, and 4-methoxyglucobrassicin. The total GSL levels were 268-198 and 23.0-15.8 mu mol/g dry weight (DW) for seeds and edible parts, respectively. Gluconapin (197 mu mol/g DW) was the highest individual GSL in seeds, whereas 4-methoxyglucobrassicin (6.08-4.94 mu mol/g DW) and glucobrassicanapin (8.18-3.09 mu mol/g DW) were found in the edible parts. In addition, LC-MS profiles of the nine GSLs identified from Korean Chinese cabbage were subjected to principal components analysis (PCA) to evaluate differences among samples. The metabolome among the four cultivar seed or edible parts was clearly separated by PCA. (C) 2010 Elsevier Ltd. All rights reserved.
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