This invention discloses a
flavonoid compound with
antibacterial activity, its preparation method, and its application. It is prepared from *
Hylocereus undatus* twigs through pretreatment, extract extraction,
silica gel column chromatography, and high-performance liquid
chromatography separation. The compound is named: 4'-hydroxy-8-methoxy-6-(4-methyl-1... H 4'-
pyrrole-2-yl)-
flavonoid, its English name is: 4'-hydroxy-8-methoxy-6-(4-methyl-1 H (-pyrrol-2-yl)-flavone, which has the following structure: The antibacterial active flavonoids of this invention are obtained from *
Hypericum esculentum* twigs through extraction,
silica gel column chromatography, and high-performance liquid
chromatography. The isopentenyl flavonoids, after activity testing, show good
antibacterial activity and a sweet
aftertaste. Using this compound in cigarette tipping paper can eliminate or reduce the possibility of harmful
bacteria growth and
reproduction in the cigarette tipping paper and improve its
flavor.