国产沉香与白木香X射线衍射指纹图谱比较及相似度分析

Comparison of X-ray diffraction Fourier fingerprint pattern and similarity analysis of Chinese agarwood and Aquilaria sinensis

目的:采用XRD技术对国产沉香与白木香进行分析,建立国产沉香X射线衍射Fourier指纹图谱分析方法。方法:对8批国产沉香药材和白木香进行X射线衍射,并按2θ进行相似度计算与分析。结果:通过对8批国产沉香药材和白木香X射线衍射图谱进行计算和分析,发现8批国产沉香的相似度在0.9096-0.9601之间,而白木香(0.7917)与沉香的相似度较低并且在X射线衍射图谱2θ为10°-20°之间有明显的差异。结论:粉末X射线衍射Fourier指纹图谱鉴定法可用于国产沉香药材的鉴定与分析,相似度的计算结果可用于该药材的质量评价。

Objective： To study Chinese agarwood and Aquilaria sinensis by X-ray diffraction （XRD） and establish the identification method of Chinese agarwood. Methods： Eight sorts of Chinese eaglewood and Aquilaria sinensis were analyzed and the fingerprint patterns were determined by X- ray diffraction. The degree of different fingerprint patterns was calculated and analyzed according to the position （20） of peaks searched. Results： The similarity of eight sorts of Chinese agarwood was high, which was between 0.9096 and 0.9601, while Aquilaria sinensis （0.7917） and Chinese agarwood in the 20（10°-20°） were different in the spectrogram. The similarity of Chinese agarwood and Aquilaria sinensis was low. Conclusion： X-ray diffraction Fourier fingerprint can be used for identification and analysis on Chinese eaglewood, and the results of similarity calculation can be used for quality evaluation.