Analysis of Flavonoid Content in Varieties of Chinese Cabbage Using HPLC-ESI-MS and HPLC-DAD

초록

The flavonoid composition of Brassica rapa L. ssp. pekinensis was studied using HPLCDAD/ ESI-MSn techniques. The structures of the flavonoid glycosides were analyzed following mild acid hydrolysis, and were identified as 3,7-diglucoside of quercetin, kaempferol, and isorhamnetin. Luteolin (15.8-127.2 mg/kg), quercetin (12.0-58.5 mg/kg), kaempferol (10.7-770.2 mg/kg), and isorhamnetin (11.8- 57.4 mg/kg) were found in several Chinese cabbage varieties. A significant positive correlation was observed connecting the contents of quercetin, kaempferol, isorhamnetin, and luteolin. Furthermore, the flavonoid content of Chinese cabbage that had been genetically modified to tolerate glufosinate fell within the range of values detected for several traditional Chinese cabbage varieties.

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