Visualization OPLS class models of GC-MS-based metabolomics data for identifying agarwood essential oil extracted by hydro-distillation.

The composition of natural substances varies with plant species and cultivation environment factors, which is also a complex problem. A total of 127 substances of agarwood essential oils (AEOs) extracted by hydro-distillation were identified by GC-MS analysis. Among the components obtained from AEOs, sesquiterpenes and small molecule aromatic substances were the main components, and there were significantly fewer chromones.