Celosia L. is richly distributed in China and there are about 60 species in the world. The chemical constituents of Celosia L. include flavonoids, triterpenoid saponins, steroids, organic acids, and cyclic peptides. W...Celosia L. is richly distributed in China and there are about 60 species in the world. The chemical constituents of Celosia L. include flavonoids, triterpenoid saponins, steroids, organic acids, and cyclic peptides. Which have a variety of effects such as antimicrobial, hepatoprotective and antitumour. To provide a scientific foundation for the subsequent phase of research and development for Celosia L., 30 years of pertinent global literature is summarized, analyzed, and categorized. An overview of 75 chemical constituents, pharmacological activities, and clinical applications is provided.展开更多
The efficacy of crude extracts of Senna alata in the improvement of vegetative and reproductive growth in Celosia aregentea was investigated. Fresh leaves of S. alata were blended with a homogenizer in 1 litre of dist...The efficacy of crude extracts of Senna alata in the improvement of vegetative and reproductive growth in Celosia aregentea was investigated. Fresh leaves of S. alata were blended with a homogenizer in 1 litre of distilled water. The resultant green paste was filtered under suction. Different concentrations (75%, 50%, 40%, 30%, 25%, 12%, 10%, and 5%) were prepared from the 100% crude extract. Seeds of C. argentea were presoaked in these different concentrations including a control (0%) and planted out after 24 hours. Results obtained showed that seedling height, leaf area, dry weight and leaf area ratio were promoted and enhanced by presoaking seeds in the extract. At the end of the experimental period (six weeks), seedling height in 75% and 100% treatments were 109 ± 16.12 cm and 117 ± 19.32 cm, leaf area 128 ± 17.91 cm2 and 125 ± 18.12 cm2, dry weight 7.48 kg and 7.0 kg respectively. Seedlings raised from seeds presoaked in water (control) however, flowered earlier (8 weeks) than the treatments (10 weeks in 75% and 100%). Presoaking seeds of C. argentea in crude extracts of S. alata before planting is recommended for optimum production of the leafy vegetable. The procedure is cheap and easily implementable by resource-poor farmers who are the main growers of C. argentea.展开更多
Two cyclopeptides, celogentin L(1) and its epimer lyciumin A(2) were firstly isolated from Celosia argentea L.. The planar structures of the two compounds were fully determined by spectroscopic data, including 1 D-, 2...Two cyclopeptides, celogentin L(1) and its epimer lyciumin A(2) were firstly isolated from Celosia argentea L.. The planar structures of the two compounds were fully determined by spectroscopic data, including 1 D-, 2 D-NMR, and HR-ESI/MS. The absolute configurations of amino acid components were assigned via chiral-phase HPLC analyses after acid hydrolysis. Furthermore, the configuration of C-N linkage at the glycine Cα was elucidated by extensive analyses of 2 D-NMR and comparison of the experimental and calculated electronic circular dichroism(ECD) spectra. Cytotoxicity of the two compounds against human alveolar epithelial A549, hepatocellular carcinoma Hep G2, and cervical cancer Hela cell lines was assayed. Although both of them were inactive in these cells, the present findings add new facets for the chemistry of Celosia argentea.展开更多
文摘Celosia L. is richly distributed in China and there are about 60 species in the world. The chemical constituents of Celosia L. include flavonoids, triterpenoid saponins, steroids, organic acids, and cyclic peptides. Which have a variety of effects such as antimicrobial, hepatoprotective and antitumour. To provide a scientific foundation for the subsequent phase of research and development for Celosia L., 30 years of pertinent global literature is summarized, analyzed, and categorized. An overview of 75 chemical constituents, pharmacological activities, and clinical applications is provided.
文摘The efficacy of crude extracts of Senna alata in the improvement of vegetative and reproductive growth in Celosia aregentea was investigated. Fresh leaves of S. alata were blended with a homogenizer in 1 litre of distilled water. The resultant green paste was filtered under suction. Different concentrations (75%, 50%, 40%, 30%, 25%, 12%, 10%, and 5%) were prepared from the 100% crude extract. Seeds of C. argentea were presoaked in these different concentrations including a control (0%) and planted out after 24 hours. Results obtained showed that seedling height, leaf area, dry weight and leaf area ratio were promoted and enhanced by presoaking seeds in the extract. At the end of the experimental period (six weeks), seedling height in 75% and 100% treatments were 109 ± 16.12 cm and 117 ± 19.32 cm, leaf area 128 ± 17.91 cm2 and 125 ± 18.12 cm2, dry weight 7.48 kg and 7.0 kg respectively. Seedlings raised from seeds presoaked in water (control) however, flowered earlier (8 weeks) than the treatments (10 weeks in 75% and 100%). Presoaking seeds of C. argentea in crude extracts of S. alata before planting is recommended for optimum production of the leafy vegetable. The procedure is cheap and easily implementable by resource-poor farmers who are the main growers of C. argentea.
基金financially supported by the National Natural Science Foundation of China(Nos.81322051 and 31400300)the Natural Science Foundation of Jiangsu Province(No.BK20151442)the Project Funded by the Priority Academic Program Development(PAPD) of Jiangsu Higher Education Institutions
文摘Two cyclopeptides, celogentin L(1) and its epimer lyciumin A(2) were firstly isolated from Celosia argentea L.. The planar structures of the two compounds were fully determined by spectroscopic data, including 1 D-, 2 D-NMR, and HR-ESI/MS. The absolute configurations of amino acid components were assigned via chiral-phase HPLC analyses after acid hydrolysis. Furthermore, the configuration of C-N linkage at the glycine Cα was elucidated by extensive analyses of 2 D-NMR and comparison of the experimental and calculated electronic circular dichroism(ECD) spectra. Cytotoxicity of the two compounds against human alveolar epithelial A549, hepatocellular carcinoma Hep G2, and cervical cancer Hela cell lines was assayed. Although both of them were inactive in these cells, the present findings add new facets for the chemistry of Celosia argentea.