Objective: To explore the changes of volatile chemical constituents before and after processing,and provide some references for analyzing the processing principle. Methods: According to the Chinese Pharmacopoeia,the volatile oil was extracted before and after the processing of raw tangerine peel by gas steam distillation. The chemical constituents of volatile oil were analyzed by gas chromatography-mass spectrometry(GC-MS). Results: After steaming,the content of volatile oil in dried tangerine peel decreased from 1.13% of raw product to 1.06%. There were 30 peaks in the tangerine peel and 24 identifiable substances. There were 33 peaks in the dried tangerine peel. An identifiable compound. There were 15 kinds before steaming and after steaming. After steaming,9 kinds were newly detected,and 9 kinds were not detected. There were 10 kinds of compounds in the compound before and after processing. There were 4 kinds of relative content decreased,and 4 kinds of relative content increased. The most significant increase was limonene,which increased from 68.790% before processing to 76.925% after processing. Conclusion: There are changes in the internal chemical composition of the dried tangerine peel before and after steaming,and its content and composition have changed. It provides some new references for clinical application and exploration of its drug changes after the processing of tangerine peel.
Journal of Sichuan of Traditional Medicine
Gas chromatography-mass spectrometry