The GSLs found in 10 cultivars of cabbage (Brassica oleracea var. capitata) popularly cultivated in Korea and China were identified and quantified. Three GSL classes (6 aliphatic; 1 aromatic; and 3 indolyl) were identified and quantified using high-performance liquid chromatography mass spectrometry (HPLC-MS) and HPLC. The concentration of these GSLs varied by season (spring- and fall-sown); leaf position (inside and outside); and cabbage color (green and red). The gluconasturtiin content was very low in all the cabbage varieties analyzed in this study (Choi et al. 2014)