Horsetail (Equisetum arvense L.) is a perennial herb which creates during the life cycle spring and summer stems. The selected species and populations were monitored in the years 2009-2011 in three different natural l...Horsetail (Equisetum arvense L.) is a perennial herb which creates during the life cycle spring and summer stems. The selected species and populations were monitored in the years 2009-2011 in three different natural locations in Laborecká vrchovina (Slovakia). Samples were collected by destructive methods in all three locations. Silicon content was determined in dry biomass by AAS. Silicon content in plants ranged from 21.11 ± 3.24 g·kg-1 to 32.80 ± 8.03 g·kg-1. The highest content of silicon exhibited samples of the September collection. We found that the location and the year in terms of silicon content were not statistically significant. The main sources for statistical variability in the accumulation of silicon were during the collections.展开更多
目的:初步研究不同生长环境和采收期对问荆药材中异槲皮苷的影响,并建立定性和定量的分析方法。方法:采用薄层色谱法,对问荆药材中异槲皮苷进行定性分析;采用HPLC法对问荆药材中异槲皮苷进行含量测定,Z O R B A X SB-C1 8(4.6 m m...目的:初步研究不同生长环境和采收期对问荆药材中异槲皮苷的影响,并建立定性和定量的分析方法。方法:采用薄层色谱法,对问荆药材中异槲皮苷进行定性分析;采用HPLC法对问荆药材中异槲皮苷进行含量测定,Z O R B A X SB-C1 8(4.6 m m×2 5 0 m m,5μm)为色谱柱;流动相:乙腈-0.1%甲酸(1 5∶8 5),流速为1.0 m L·m in-1;检测波长为354 nm;进样量为10μL。结果:采收期对问荆药材的薄层色谱和异槲皮苷含量均有较大的影响;薄层色谱斑点清晰,分离度良好;异槲皮苷在0.41~95.13μg·m L-1范围内与峰面积呈良好线性,r=0.9999,平均回收率为9 7.2%,R SD=1.3%。结论:每年6~8月是问荆药材的最佳采收期;所建立的方法简便,灵敏,重现性良好,可作为问荆药材的质量控制方法。展开更多
基金The work was supported by the Agency of Ministry of Education,Science,Research and Sport of the Slovak Republic,the project:00162-0001(MS SR-3634/2010-11).
文摘Horsetail (Equisetum arvense L.) is a perennial herb which creates during the life cycle spring and summer stems. The selected species and populations were monitored in the years 2009-2011 in three different natural locations in Laborecká vrchovina (Slovakia). Samples were collected by destructive methods in all three locations. Silicon content was determined in dry biomass by AAS. Silicon content in plants ranged from 21.11 ± 3.24 g·kg-1 to 32.80 ± 8.03 g·kg-1. The highest content of silicon exhibited samples of the September collection. We found that the location and the year in terms of silicon content were not statistically significant. The main sources for statistical variability in the accumulation of silicon were during the collections.
文摘目的:初步研究不同生长环境和采收期对问荆药材中异槲皮苷的影响,并建立定性和定量的分析方法。方法:采用薄层色谱法,对问荆药材中异槲皮苷进行定性分析;采用HPLC法对问荆药材中异槲皮苷进行含量测定,Z O R B A X SB-C1 8(4.6 m m×2 5 0 m m,5μm)为色谱柱;流动相:乙腈-0.1%甲酸(1 5∶8 5),流速为1.0 m L·m in-1;检测波长为354 nm;进样量为10μL。结果:采收期对问荆药材的薄层色谱和异槲皮苷含量均有较大的影响;薄层色谱斑点清晰,分离度良好;异槲皮苷在0.41~95.13μg·m L-1范围内与峰面积呈良好线性,r=0.9999,平均回收率为9 7.2%,R SD=1.3%。结论:每年6~8月是问荆药材的最佳采收期;所建立的方法简便,灵敏,重现性良好,可作为问荆药材的质量控制方法。