基于Heracles Neo超快速气相电子鼻对广藿香饮片的快速鉴别及气味指纹图谱研究

目的 通过Heracles Neo超快速气相电子鼻技术,建立广藿香饮片快速鉴别方法,建立专属性特征性强的广藿香饮片气味指纹图谱.方法 采用Heracles Neo超快速气相电子鼻对广藿香饮片及黑龙江、四川和湖南3个产地的藿香饮片样品进行气味分析,根据获取的气味色谱信息,结合Kovats保留指数及Arochembase数...

Rapid identification of Pogostemonis Herba and its odor fingerprint based on Heracles Neo ultra-fast gas phase electronic nose

Objective By Heracles Neo ultra-fast gas-phase electronic nose technology, a rapid identification method for Guanghuoxiang (Pogostemonis Herba, PH) was established, and the odor fingerprint of PH with strong specific characteristics was established. Methods Heracles Neo ultra-fast gas phase electronic nose was used to analyze the odor of PH and Huoxiang samples from Heilongjiang, Sichuan and Hunan province. According to the obtained odor chromatographic information, combined with the Kovats retention index and the Arochembase database, the rapid identification of Pogostemon cablin was obtained with established chemometric model. MXT-5 (low polarity) and MXT-1701 (medium polarity) were used to analyse the odor fingerprint of P. cablin. Results A rapid identification method for P. cablin was achieved by three chemometric PCA (principal component analysis), DFA (discriminant factor analysis) and SIMCA (soft independent modeling of class analysis). And the specific odor fingerprints of P. cablin by two different polarity chromatographic columns were obtained. Conclusion The established P. cablin scented fingerprints of decoction pieces were highly specific, and could be used to quickly identify P. cablin scented pieces based on the established odor fingerprints, providing new ways for the rapid identification of authenticity of Chinese medicinal materials.