The content and the diurnal dynamic changes of phytoncide in two garden tree species
Phytopcide can enhance human immunity,inhibit the growth of cancer cells,and has special medical functions.At the same time,it has certain health care effects of regulating blood pressure,relieving mental disorders,reducing blood sugar,relieving pain and anti-spasticity.In recent years,with the rapid development of forest health and wellness industry,the research,development and utilization of forest phytopcide have been paid more and more attention by scholars.The study on the composition,relative content and diural-dynamic variation characteristics of phytopcide in volatile organic compounds released by forest health amd wellness plants can provide reference for the development of forest health activities and the optimization of the time and place of health.In this study,two forest health and wellness plants,Acer palmatum and Camellia sinensis,which are featured in the national forest health base,were taken as the research objects.Using dynamic headspace collection method timing quantitative adsorption samples,using Entech7200 preconcentration and Agilent7890B/5977GC-MS instrument analysis,to identify the composition,relative content and diurnal dynamic change characteristics of phytopcide in VOCs of A.palmatum Thunb.and C.sinensis.The results showed that the components of phytopcide of the two forest health and wellness plants were mainly alkanes,alcohols,aromatic hydrocarbons,ketones,aldehydes and terpenes,among which alkanes and aromatic hydrocarbons accounted for a relatively high proportion.The relative contents of terpenes,an important component of A.palmatum Thunb.phytopcide,were higher than those of C.sinensis,and the relative contents of terpenes of two botanies in phytopcide showed the same diurnal variation which is the relative contents of terpenes of 8:00 AM and 16:00 PM were higher,and the relative contents of 12:00 PM were the lowest.Therefore,A.palmatum Thunb.with high ornamental value and high phytopcide content can be preferred in the construction of forest health and wellness cultivation base and selection of forest health and wellness cultivation plants.It is more appropriate to carry out forest-care activities at 8:00 AM and 16:00 PM.
forest health and wellnessphytoncidevolatile organic compoundterpenoid substance