期刊
FOOD CHEMISTRY
卷 119, 期 3, 页码 868-873出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2009.09.092
关键词
Citrus peel; Prostaglandin E-2; Nitric oxide; Anti-inflammation; Polymethoxy flavones
资金
- National Science Council, Taipei, Taiwan [97-2320-13-264-001-MY3]
In traditional Chinese medicine, dried citrus fruit peels are widely used as remedies to alleviate some respiratory inflammatory syndromes and are considered as potential sources of anti-inflammatory components. Seven citrus fruits were selected for this study. We determined the inhibitory ability of citrus peel extracts on the production of pro-inflammatory mediators, prostaglandin E-2 (PGE(2)) and nitric oxide (NO), in lipopolysaccharide (LPS)-activated RAW 264.7 cells. Among the tested citrus peels, Ponkan (Citrus reticulata Blanco) and Tonkan (Citrus tankan Hayata) deserve special attention due to their outstanding inhibitory effect on PGE(2) and NO secretion. We have also examined the composition, flavanone glycosides and polymethoxy flavones. The polymethoxy flavone content, especially nobiletin, appears to correlate well with the anti-inflammatory activities of certain citrus peel extracts. Thus, our results suggest that polymethoxy flavones contribute crucially to the anti-inflammatory activity of citrus peels. (C) 2009 Elsevier Ltd. All rights reserved.
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