@article{jfnr2015395,
author={{Yao, Xincheng and Zhang, Ting and Tang, Hui and Wang, Heng and Chen, Wen},
title={Free Radical-scavenging, Nitrite-scavenging, and N-nitrosamine Formation Inhibitory Activities of Extracts from Kunlun Compositae Tea (<i>Coreopsis tinctoria</i> Nutt.)},
journal={Journal of Food and Nutrition Research},
volume={3},
number={9},
pages={587--592},
year={2015},
url={http://pubs.sciepub.com/jfnr/3/9/5},
issn={2333-1240},
abstract={<b> </b> <i>Coreopsis tinctoria</i> Nutt., Asteraceae, is widely used as an ornamental plant and as a popular tea production in China. In this paper, we report about the free radical-scavenging, nitrite-scavenging and N-nitrosamine formation inhibitory activities of ethyl acetate extract (EAE) and n-butanol extract (BE) of <i>C. tinctoria</i> ?owering tops (CTF). The results showed the BE contained higher total phenolic content (TPC) , total flavonoid content (TFC) and total proanthocyanidin (TPA) contents with DPPH, ABTS and <SUP>*</SUP>OH radical-scavenging activities (IC<SUB>50</SUB>) of 25.79¡À2.753, 26.61¡À3.158 and 2349.8¡À0.672 ¦Ìg/ml, respectively. However, EAE showed higher radical-scavenging activities, with IC<SUB>50 </SUB>ABTS and <SUP>*</SUP>OH values of 13.71¡À2.973 and 321.6¡À0.576 ¦Ìg/ml, respectively. The nitrite-scavenging and N-nitrosamine inhibitory activities (IC<SUB>50</SUB>) of EAE were 122.10¡À1.03 and 2362.86¡À11.26 ¦Ìg/ml, respectively, whereas those of BE were 118.23¡À1.30 and 2182.79¡À10.74 ¦Ìg/ml, respectively. Given these activities, we propose that CTF can be potentially used as a rich source of natural free radical and nitrite scavengers.},
doi={10.12691/jfnr-3-9-5}
publisher={Science and Education Publishing}
}