中草药植物白光漫反射光谱研究

测定了 5 7种中草药植物的药用部分的白光漫反射光谱 ,与传统的紫外分光光度法及红外分光光度法相比 ,这种测定方法不用截取样品 ,可作无损检测 ,且测定过程简便。从测定结果发现 ,这些白光漫反射光谱都具有可作识别的特征峰 ,显然中草药的白光漫反射光谱可作为中草药鉴别的一种辅助方法。从测定的白光漫反射光谱中 ,还发现药用部分为地上部分的 (阳光下生长的 )在 6 5 0～ 6 90nm区间具有明显的大吸收峰 ,而药用部分为地下部分的或植物体内的 (不在阳光下生长的 ,如种子 )则没有 ,因此可利用某些中草药植物在 6 5 0～ 6 90nm区间的吸收特性用光控方法调控中草药的栽培生产 ,提高中草药的质量与产量。

Study on White Light Diffuse Reflection Spectrum of Chinese Herbal Medicine

The white light diffuse reflection spectra of 57 kinds of Chinese herbal medicines were measured. Each of these spectra has some characteristics feature individually different from others. The spectra of those Chinese herbal medicines, whose medicinal sections are above ground (growing under sunlight), have a larger absorption peak in the region 650 690 nm than those under ground and inside herbal medicine body (growing isn't under sunlight, for example, the seeds). It was demonstrated that the white light diffuse reflection spectrum may be used to examine or distinguish Chinese herbal medicines as additional method and to control cultivation or growth of some Chinese herbal medicines.