Aim To Methods The constituents tures were identified investigate the chemical constituents of MiUettia nitita var. hirsutissima. were isolated and purified by chromatographic techniques, and the strucby spectral evid...Aim To Methods The constituents tures were identified investigate the chemical constituents of MiUettia nitita var. hirsutissima. were isolated and purified by chromatographic techniques, and the strucby spectral evidences. Results Four flavonoids were isolated from the plant, including liquiritigenin （ 1 ）, naringenin （2）, maackiain （3）, and 3R-vestitol （4）. Conclusion Compounds 1 and 2 were obtained from the genus Millettia for the first time ; 3 and 4 were obtained from the plant for the first time.展开更多
Insecticidal effects of different doses of the dust and methanol extracts of Garcinia kolae on Callosobruchus maculatus and Sitophilus zeamais were tested. The dust had no significant effect on the two insects, none o...Insecticidal effects of different doses of the dust and methanol extracts of Garcinia kolae on Callosobruchus maculatus and Sitophilus zeamais were tested. The dust had no significant effect on the two insects, none of them died even at 3 d after treatment. The methanol extracts, however, had rapid lethal effects on both C. maculatus and S. zeamais. The mortality of C. maculatus by the lowest concentration of methanol extracts ranged from 95%-100% whereas in S. zeamais, the mortality ranged from 87.5%-100% and 70%-100% in concentrations of 1 g extract＋3 ml methanol and 1 g extract＋5 ml methanol, respectively, from 24 to 48 h. The least concentration of 1 g extract＋l 5 ml methanol had no significant lethal effect on Sitophilus zeamais.展开更多
文摘Aim To Methods The constituents tures were identified investigate the chemical constituents of MiUettia nitita var. hirsutissima. were isolated and purified by chromatographic techniques, and the strucby spectral evidences. Results Four flavonoids were isolated from the plant, including liquiritigenin （ 1 ）, naringenin （2）, maackiain （3）, and 3R-vestitol （4）. Conclusion Compounds 1 and 2 were obtained from the genus Millettia for the first time ; 3 and 4 were obtained from the plant for the first time.
文摘Insecticidal effects of different doses of the dust and methanol extracts of Garcinia kolae on Callosobruchus maculatus and Sitophilus zeamais were tested. The dust had no significant effect on the two insects, none of them died even at 3 d after treatment. The methanol extracts, however, had rapid lethal effects on both C. maculatus and S. zeamais. The mortality of C. maculatus by the lowest concentration of methanol extracts ranged from 95%-100% whereas in S. zeamais, the mortality ranged from 87.5%-100% and 70%-100% in concentrations of 1 g extract＋3 ml methanol and 1 g extract＋5 ml methanol, respectively, from 24 to 48 h. The least concentration of 1 g extract＋l 5 ml methanol had no significant lethal effect on Sitophilus zeamais.
