Comparative study on main components and detection methods of Pericarpium Citri Reticulatae from different habitats

There are many chemical constituents in Pericarpium Citri Reticulatae, such as flavonoids, volatile oil, alkaloids and so on. This paper compares, analyzes and summarizes the main components of Pericarpium Citri Reticulatae from different producing areas and different detection methods. The results showed that although they all have the same chemical composition, there are also differences between them, which leads to the difference of medicinal effect. The contents of hesperidin and hepthoxyflavone in Fuju, Sichuan Dahongpao and Wenzhou tangerine were the highest. There are four main types of detection methods of tangerine peel, which are spectrophotometry, electrochemical method, chromatography, gas chromatography-mass spectrometry. When the content of total flavonoids in Pericarpium Citri Reticulatae is measured, spectrophotometry is often used. Both electrochemical method and chromatographic method can be used to determine the content of specific flavonoids. Chromatography can also be used for the separation of flavonoids and the identification between Pericarpium Citri Reticulatae and Citrus reticulate Blanco‘chachi’ (Guangchenpi). However, gas chromatography-mass spectrometry (GC-MS) is mostly used for the determination of volatile compounds in Pericarpium Citri Reticulatae. With the development of science and technology in the future, it will be more in-depth to explore the composition differences of Pericarpium Citri Reticulatae from different habitats, and more efficient detection methods will be used for research.