基于红外光谱和扫描电镜的川贝母粉末掺杂鉴别研究

目的 开展川贝母粉末饮片的掺杂鉴别研究。方法 采用傅里叶红外光谱法（FIR）和扫描电镜法鉴别川贝母粉掺加淀粉和米粉。结果 淀粉和米粉的红外光谱一维图谱与川贝母粉末饮片极其相似，二阶导数图谱显示川贝母粉掺加淀粉和米粉后有变化，淀粉与米粉分别在1489cm-1和669cm-1处有特征吸收峰；川贝母粉掺加淀粉和米粉的扫描电镜图谱与川贝母粉末有明显不同。结论 红外光谱分析和扫描电镜可以直观、有效地鉴别川贝母粉是否掺加淀粉和米粉，为川贝母粉末饮片的质量评价提供参考。 

Identification of Fritillaria powder by IR and scanning electron microscopy

OBJECTIVE To identify the Fritillaria powder and adulterant. METHODS FIR and scanning electron microscopy were adopted to identify Fritillaria powder and mixture with starch and rice flour. RESULTS The IR one-dimensional spectrum of starch and rice flour was similar to Fritillaria powder， while the two-dimensional spectrum was different. The spectrum of starch and rice flour at 1489cm-1 and 669cm-1 respectively showed difference. The scanning electron microscopy spectrum of Fritillaria powder was also different from mixture with starch and rice flour. CONCLUSION FIR and scanning electron microscopy can identify the Fritillaria powder and adulterant intuitively and effectively and it provide reference for the quality evalution of the Fritillaria powder.