Determination of flavonoids and their antioxidant capacities in Chinese Jujube
The objective of this study was to determine flavonoids and their antioxidant capacities in Chinese Jujube. After initial separation by macropore resin, extracts of 60％ ethanol were further separated by silica gel column and fractionation FJ-1 was obtained. The composition and structure of this fractionation was analyzed by HPLC, IR and HPLC-MS. The ability to eliminate O2· and ·OH of this component was analyzed. Content of total flavonoids in Chinese Jujube was 97.98％. FJ-1 was initially determined to be flavonol with molecular weight of 352. When 0.4mg/mL flavonoids was added, 94.6％ of ·OH and 73.33％ of O2· can be eliminated respectively. FJ-1 shows excellent antioxidant capacity and has dose-effect relationship.
Chinese jujube Flavonoids Separation Antioxidant capacity
Zhang Ping-ping Liu Jin-fu Yuan Ya-na Li Li Liu Xian-hua
Department of Food Science Tianjin Agricultural University Tianjin, China School of Environmental Science and Technology Tianjin University Tianjin, China
国际会议
2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)
上海
英文
125-129
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）