Five Aromatic Plant Volatile Components And The Impact On The Anxiety Of College Students

This study investigated the volatile components of five aromatic plants,Pelargonium roseu,Tagetes lemmonii,Cymbidium ensifolium,Lippia citriodora,and Jasminum sambac,and their effects on anxiety among college students,with a view to providing plant selection and ideas for the construction of recreational garden landscapes.Physiological indicators such as diastolic blood pressure,systolic blood pressure,heart rate,fingertip pulse rate,and blood oxygen saturation were measured in volunteers after smelling incense for different times.The mood state scale(POMS)and state anxiety scale(STAI-S)were used to assess psychological changes.According to the experimental results,all five plants have the effect of reducing blood pressure,heart rate,and fingertip pulse rate.In terms of psychology,all five plants have the effects of alleviating anxiety,increasing positive emotions,reducing negative emotions,and improving mood.Pelargonium roseu has the best effect on reducing systolic blood pressure,with an average value of 7.46 mm Hg.The other order is: jasmine reduced systolic blood pressure to 6.06 mm Hg,Jianlan reduced systolic blood pressure to 5.94 mm Hg,lemon verbena reduced systolic blood pressure to4.68 mm Hg,marigold reduced systolic blood pressure to 4.57 mm Hg.Jasmine has the best effect on reducing diastolic blood pressure,with a decrease of 6.19 mm Hg.The other order is: the decrease value of Jianlan is 5.84 mm Hg,the decrease value of Pelargonium roseu is5.38 mm Hg,the decrease value of Lemon Verbena is 5.25 mm Hg,and the decrease value of Aromatic Marigold is 4.51 mm Hg.The volatile components of five plants were determined by gas chromatography mass spectrometry(GC-MS).The results showed that the main volatiles of Pelargonium roseu were pinene hydrochloride(49.03%),camphorene hydrate(14.36%),and citronellol(12.08%).The main volatiles of aromatic marigold are:(Z)-marigold ketone(23.34%),dihydromarigold ketone(17.84%),and(E)-basilenone(13.61%).The main volatiles of Jianlan are citronellol(10.69%),2-vinyl-1,7,7-trimethylbicyclo(2.2.1)heptane(7.37%),and4-hydroxyphenylacetamide(6.02%).The main volatiles of Verbena citrifolia are:dextropterpene(57.77%),junipene(11.67%),and citral(7.07%).The main volatiles of jasmine are benzyl acetate(47.16%),linalool(29.70%),and folyl acetate(12.73%).The ingredients in Pelargonium roseu that can alleviate anxiety are citronellol,rose oxide,and linalool.The ingredients in fragrant marigold that have the effect of relieving anxiety are:basilene,linalool,and caryophyllene.The ingredients in Jianlan that can alleviate anxiety are citronellol,linalool,and citral.The ingredients in lemon verbena that can alleviate anxiety are: citral,basilene,eucalyptol β-Pinene,benzyl acetate.The components in jasmine that can alleviate anxiety are benzyl acetate and linalool.