• YAKHAK HOEJI
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• v.42 no.6
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• pp.567-571
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• 1998

The phagocytic activity of murine peritoneal macrophage, was determined by lucigenin chemiluminescence and engulfment of fluorescein-conjugated E. coli particle. The acti vity-guided fractionation upon the methylenechloride fraction of Aurantii immaturi pericarpium led to the isolation of a flavonoid, isosinensetin, as a suppressive component of phagocytosis. Isosinensetin suppressed the lucigenin chemiluminescence and the engulfment of fluorescein-conjugated E. coli particles and enhanced the production of nitric oxide in murine peritoneal macrophage.