摘要
采用红外光谱三级鉴定法对三七不同药用部位(主根、支根和花)进行了分析。三七主根和支根的红外光谱谱图相似,三七花谱图与二者差异较大。三七主根、支根在1154,1079,1022cm^(-1)附近有淀粉的特征吸收峰,说明二者主成分为淀粉。此外,三者红外谱图中1736,1647cm^(-1)附近的吸收峰也存在较大差异。二阶导数光谱中,三七支根、三七花存在芳香环骨架和C=O伸缩振动吸收峰,而三七主根中两类基团的吸收峰均不显著。二维相关红外光谱,在1750~1350cm^(-1)、1300~1050cm^(-1)波段三者的差别也比较明显。结果表明:采用红外光谱三级鉴定法可以对三七不同药用部位三七主根、三七支根和三七花进行方便、快速的分析与表征。
The different parts of Panax Notoginseng,i.e.main root,fibrous root and flower,were systematically studied through tri-step identification based on infrared spectroscopy.Main root and fibrous root of Panax Notoginseng show semblable peaks of starch at near 1154,1079,1022cm-1 in their Fourier transform infrared spectroscopy(FTIR).However,the characteristic absorption bands of starch are not obvious in flower spectra.Moreover,the peaks at near 1736,1647cm-1 differs from each other in FT-IR of three samples.In addition,peaks assigned to the stretching vibration of C=O groups and aromatics emerged in secondary derivative infrared spectroscopy(SD-IR)of fibrous root and flower.However,the peaks of two groups were not obvious in SD-IR of main root.Furtherly,the obvious auto-peaks in the range of 1750-1350cm-1 and 1300-1050cm-1 in two-dimensional correlation infrared spectroscopy(2D-IR)differs from each other.Tri-step identification based on IR can provides an objective,rapid and accurate method to identify the different parts of Panax Notoginseng and benefit for further utilization and development of Panax Notoginseng.
作者
杨兰芬
郝志云
杨新周
YANG Lanfen;HAO Zhiyun;YANG Xinzhou(Department of Science and Engineering,Dehong Teachers college,Mangshi 678400,China;The Research Institute of Ethnic Minority Medicine,Dehong Teachers College,Mangshi 678400,China)
出处
《云南化工》
CAS
2018年第6期81-83,共3页
Yunnan Chemical Technology
基金
德宏师范高等专科学校校级项目研究成果
项目编号:DSK201525
关键词
三七主根
三七支根
三七花
红外光谱
三级鉴定
Panax Notoginseng
Main root
Fibrous root
Flower
Infrared spectroscopy
Tri-step identification
