HS-SPME-GC-MS结合多元统计分析对金银花线香燃烧产物的鉴定OA

In order to identify the main volatile components in the incense,further reveal the differences of these components among different samples and their contributions to the aroma characteristics,headspace solid-phase microextraction gas chromatography-mass spectrometry(HS-SPME-GC-MS)combined with multivariate statistical analysis was used,the combustion products of sticky powder,Lonicera japonica Thunb.powder,Lonicera japonica Thunb.powder combustion products and thread incense combustion products were extracted to identify the volatile components and determine the key volatile components.The results showed that a total of 102 volatile components were identified from the 4 samples,which were mainly aromatic,heterocyclic and ketone compounds,etc.The key volatile components of the 4 samples were analyzed by principal component analysis,orthogonal partial least-squares discrimination analysis and clustering heat map analysis,which showed that the volatile components of Lonicera japonica Thunb.powder combustion products and thread combustion products were similar in composition,and there were large differences with the volatile components of sticky powder combustion products and Lonicera japonica Thunb.powder,and screened out 25 kinds of variable important for the projection(VIP)>1 key volatile components.Above results provided a theoretical basis for the further development of Lonicera japonica Thunb.thread incense and expanded a new direction for the application of Chinese herbal medicine.