Two new labdane diterpenes isolated from the rhizomes of Hedychium forrestii were determined by spectroscopic evidence to be labda-8(17), 11, 13-trien-7β-hydroxyl-15(16)-olide (1, hedyforrestin B) and labda-8(17), 11...Two new labdane diterpenes isolated from the rhizomes of Hedychium forrestii were determined by spectroscopic evidence to be labda-8(17), 11, 13-trien-7β-hydroxyl-15(16)-olide (1, hedyforrestin B) and labda-8(17), 11, 13-trien-7β,16-dihydroxyl-16(15)-olide (2, hedyforrestin C).展开更多
Two new sesquiterpenoid trialcohol isomers named 1 beta, 4 alpha 11 alpha -trihydroxyeudesmane (1) and Yunnanensehedychetriol (2), were isolated from the fresh rhizomes of Hedychium Yunnanense gagnep. Their structures...Two new sesquiterpenoid trialcohol isomers named 1 beta, 4 alpha 11 alpha -trihydroxyeudesmane (1) and Yunnanensehedychetriol (2), were isolated from the fresh rhizomes of Hedychium Yunnanense gagnep. Their structures were elucidated by spectroscopic methods.展开更多
The linearity, stability, accuracy and inter-day precisions of the assay method were evaluated in water, soil and rhizomes and leaves of Hedychium coronarium of the Zingiberaceae family. Mato Grosso do Sul is a predom...The linearity, stability, accuracy and inter-day precisions of the assay method were evaluated in water, soil and rhizomes and leaves of Hedychium coronarium of the Zingiberaceae family. Mato Grosso do Sul is a predominantly agricultural state in Brazil and has many rivers and permanent and seasonal lakes, in which the Hedychium coronarium, an aquatic plant, is found the swampy environments. The prepared samples were analyzed quantitatively by High Performance Liquid Chromatography with PDA and UV detection for the presence of thiamethoxam. The thiamethoxam was recovered from these samples at rates ranging from 81.16% - 99.93%. The coefficient of variation in the quantitative analysis of the thiamethoxam was under 5%. The linearity of the method was determined by linear regression. The analysis of the samples spiked with known amounts of analyte demonstrated that the response was proportional to the concentrations of the samples with determination coefficients of r2 = 0.9992 (water and soil) and r2 = 0.9990 (leaves and rhizomes) for the linear range of the analytical calibration curves of the samples. The detection limit was 0.36 μg.L-1 and quantification limit was 1.2 μg.L-1 for thiamethoxam. The method was considered sensitive for quantification of the thiamethoxam in water, soil and rhizomes and leaves of Hedychium coronarium.展开更多
依据苞片是覆瓦状排列或是卷筒状排列而把姜花属Hedychium分为两个亚属的分类法近年颇受质疑。本文利用30对多态性好的随机引物,对中国姜花属的19种1变种共22份材料进行SRAP分子标记分析。其中最有效的28对引物共扩出152条带,当中135条...依据苞片是覆瓦状排列或是卷筒状排列而把姜花属Hedychium分为两个亚属的分类法近年颇受质疑。本文利用30对多态性好的随机引物,对中国姜花属的19种1变种共22份材料进行SRAP分子标记分析。其中最有效的28对引物共扩出152条带,当中135条为多态性带,占88.8%。平均每对4.8条,多态性条带里最多的为引物组合F13R1,达到13条。聚类分析表明:(1)中国姜花属植物可分为三个类群:第I群植株较矮小,主要分布于石灰岩地区;第II群与第I群每苞片均具2朵以上的小花,但植株较高大且基本上不分布于石灰岩地区;第III群每苞片仅具1朵小花。此结果与Wood(2000)用ITS分析得出的结果基本一致。(2)支持吴德邻和Larsen(2000)把H.emeienseZ.Y.Zhu归并为峨眉姜花H.flavescens Carey ex Roscoe的观点。(3)盘珠姜花H.panzhuumZ.Y.Zhu与黄姜花H.flavum Roxb.是同一种植物,即盘珠姜花是黄姜花的晚出同名。(4)土壤基质可能是导致姜花属物种分化的重要因素。作者认为根据每苞片有花多少的特征,在系统学上可把姜花属分为两个类群:A类群,每苞片仅有1朵小花;B类群,每苞片有2朵以上的小花。展开更多
基金Program granted by the Laboratory of Phytochemstry,Kunming Institute of Botany,the Chinese Academy of Sciences
文摘Two new labdane diterpenes isolated from the rhizomes of Hedychium forrestii were determined by spectroscopic evidence to be labda-8(17), 11, 13-trien-7β-hydroxyl-15(16)-olide (1, hedyforrestin B) and labda-8(17), 11, 13-trien-7β,16-dihydroxyl-16(15)-olide (2, hedyforrestin C).
文摘Two new sesquiterpenoid trialcohol isomers named 1 beta, 4 alpha 11 alpha -trihydroxyeudesmane (1) and Yunnanensehedychetriol (2), were isolated from the fresh rhizomes of Hedychium Yunnanense gagnep. Their structures were elucidated by spectroscopic methods.
文摘The linearity, stability, accuracy and inter-day precisions of the assay method were evaluated in water, soil and rhizomes and leaves of Hedychium coronarium of the Zingiberaceae family. Mato Grosso do Sul is a predominantly agricultural state in Brazil and has many rivers and permanent and seasonal lakes, in which the Hedychium coronarium, an aquatic plant, is found the swampy environments. The prepared samples were analyzed quantitatively by High Performance Liquid Chromatography with PDA and UV detection for the presence of thiamethoxam. The thiamethoxam was recovered from these samples at rates ranging from 81.16% - 99.93%. The coefficient of variation in the quantitative analysis of the thiamethoxam was under 5%. The linearity of the method was determined by linear regression. The analysis of the samples spiked with known amounts of analyte demonstrated that the response was proportional to the concentrations of the samples with determination coefficients of r2 = 0.9992 (water and soil) and r2 = 0.9990 (leaves and rhizomes) for the linear range of the analytical calibration curves of the samples. The detection limit was 0.36 μg.L-1 and quantification limit was 1.2 μg.L-1 for thiamethoxam. The method was considered sensitive for quantification of the thiamethoxam in water, soil and rhizomes and leaves of Hedychium coronarium.
文摘依据苞片是覆瓦状排列或是卷筒状排列而把姜花属Hedychium分为两个亚属的分类法近年颇受质疑。本文利用30对多态性好的随机引物,对中国姜花属的19种1变种共22份材料进行SRAP分子标记分析。其中最有效的28对引物共扩出152条带,当中135条为多态性带,占88.8%。平均每对4.8条,多态性条带里最多的为引物组合F13R1,达到13条。聚类分析表明:(1)中国姜花属植物可分为三个类群:第I群植株较矮小,主要分布于石灰岩地区;第II群与第I群每苞片均具2朵以上的小花,但植株较高大且基本上不分布于石灰岩地区;第III群每苞片仅具1朵小花。此结果与Wood(2000)用ITS分析得出的结果基本一致。(2)支持吴德邻和Larsen(2000)把H.emeienseZ.Y.Zhu归并为峨眉姜花H.flavescens Carey ex Roscoe的观点。(3)盘珠姜花H.panzhuumZ.Y.Zhu与黄姜花H.flavum Roxb.是同一种植物,即盘珠姜花是黄姜花的晚出同名。(4)土壤基质可能是导致姜花属物种分化的重要因素。作者认为根据每苞片有花多少的特征,在系统学上可把姜花属分为两个类群:A类群,每苞片仅有1朵小花;B类群,每苞片有2朵以上的小花。
