Terahertz Spectroscopic Identification of Radix Angelicae Dahuricae before and after Sulfur Fumigation Process

摘要

In this work, 120 herbal medicine samples of Radix Angelicae Dahuricae (Baizhi) before and after the sulfur fumigation process were measured by terahertz time-domain spectroscopy and analyzed by support vector machine technology. The results show that the advanced algorithm used in this paper can get a classification accuracy rate of 100%. This technology can be used to qualitatively identify the herbal medicine with and without artificial treatment.