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The yields of methanol extracts of several Chrysanthemum spp.(5 species, 9 parts) and their solvent fractions were investigated. The yields of methanol extracts ranged from 16.9%(for flower of C. indicum, Cultivated) to 31.5%(for whole plant of C. indicum). In the tests of the antibacterial activity, the methanol extracts from flower of C. zawadskii and C. boreale, whole plant of C. zawoadskii, and flower of C. coronarium showed excellent antibacterial activity. Generally, the chloroform fractions exhibited stronger antibacterial activity against all the bacteria tested when compared with other solvent fractions. In case of C. boreale, the chloroform fraction of the whole plant was shown stronger antibacterial activity against all four bacterial strains tested when compared with that of the flower. The chloroform fractions from flower and whole plant of C. boreale and C. zawadskii, and flower of C. coronarium were shown a similar TLC pattern.
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