Position: Home > Articles > Study on Cultivated and Wild Gastrodia elata by Three-Step Infrared Macro-fingerprint Method
Journal of Mountain Agriculture and Biology
2014,33
(6)
79-82
野生与栽培天麻的红外三级鉴定
作 者：
方智文;唐延林;魏晓楠;方世诚
单 位：
贵州大学;贵州大学理学院
关键词：
栽培与野生;天麻;红外光谱;二阶导数谱;二维相关红外光谱
摘 要：
采用红外光谱的三级鉴定法,通过所获得的一维红外光谱、二阶导数谱和二维红外相关谱,可逐步提高红外谱图的分辨率,并从不同的角度上体现其差异性来分析鉴别区分栽培与野生春、冬天麻。结果表明三类天麻样品的一维红外光谱和二阶导数谱整体上十分相似,只是在部分吸收峰略有偏移,对比该区域的二维相关红外光谱,差异主要表现在950-800 cm-1和相关峰的不同。因此红外三级鉴定法可以对栽培与野生春、冬天麻进行快速、无损、简便的分析与鉴定。
译 名：
Study on Cultivated and Wild Gastrodia elata by Three-Step Infrared Macro-fingerprint Method
作 者：
FANG Zhi-wen;TANG Yan-lin;WEI Xiao-nan;FANG Shi-cheng;College of Life Sciences,Guizhou University;College of Sciences,Guizhou University;
关键词：
Cultivated;;Wild;;Gastrodia elata;;Infrared spectrum;;Secondary derivative IR spectra;;Two-dimensional correlation infrared spectra
摘 要：
The general infrared spectra(FTIR),secondary derivative IR spectra and two-dimensional correlation infrared spectra(2D-IR) from three-step infrared macro-fingerprint method can enhance the spectral resolution gradually,thus can be adopted to discriminate and identify the cultivated and wild spring and winter Gastrodia elata by their dissimilarity on spectral characteristics. The results showed that general infrared spectra and secondary derivative IR spectra of the three samples are very similar with each other,except position offset of some peaks. Correspondingly,the main differences in two-dimensional correlation infrared spectrum were in 950-800 cm-1and the correlation peaks. Three-step infrared macro-fingerprint method can be used to analyze and distinguish cultivated and wild G. elata rapidly and nondestructively.
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