Study Of Perceptive Interaction Between Characteristic Aroma Compounds And Sensory Attributes In Rose Essential Oil

The aroma composition of rose essential oil is very complicated,so it is difficult to accurately describe the qualitative or quantitative in the nonlinear relationship between aroma quality and the aroma compounds,and the interaction mechanism between characteristic aroma compounds and sensory attributes was very complicated.In order to study and evaluate the aroma quality of natural products,and to provide guidance and service for rose flavour blend,this paper selected the five different species of rose essential oil as the research object.The five samples were analyzed by electronic nose,GC–MS and GC–O.Accurate qualitative and quantitative analysis of 38 characteristics aroma components of rose essential oil.The characteristic aroma components of Damascus rose essential oil were recombined.The analysis of recombinant samples by electronic nose established the importance of alcohols in rose essential oil.This study on the impact of aroma components on the overall aroma by the omission and add test,and found that 21 aroma components(citronellol,geraniol,nerol,phenethylol,rosoxide,hexanal,citral,heptanal,nonanal,methyl eugenol,ethyl octanoate,ethyl tetradecanoate,citronella acetate,geranyl acetate,citronellyl acetate,phenylethyl acetate,2-undecanone,?-damascone,limonene,?-pinene,?-myrcene)have a significant impact on the rose base.The effects of perceptive interaction between 21 aroma components and the rose base were analyzed.The results of these three methods(S-curve,ova and ?-?)were found to be mutually validated and mutually complementary.Finally,10 characteristic aroma structures of 5 rose essential oil were studied by sensory quantitative descriptive analysis,including sweety,honey,femented,spicy,fruity,woody,flowal,herbal,green and freshly.PLSR methods were used to find the relationship between 10 sensory attributes and 21 characteristic aroma compounds,and the sensory interactions between the characteristic aroma compounds of rose essential oil and sensory attributes was discussed by ?-?.Well establish a synergistic effect table between the characteristic aroma compounds and the sensory attributes.This paper provided a reference for the flavourists.