Analysis of nutmeg odor characteristics from different origins based on electronic nose and electronic tongue technology
Objective Based on electronic nose and electronic tongue technology,the relationship between odor characteristics and chemical composition of nutmeg medicinal materials from different origins was analyzed.Methods To determine the effect of chemical component content differences on the taste value of nutmeg from different origins,the methods of Principal component analysis(PCA),Loading analysis and linear discriminant analysis(LDA)were carried out on the odor response values of nutmeg from different origins by electronic nose and electronic tongue technology,and the regression analysis diagram between the components and taste was drawn by combining the taste values of five chemical components,namely limonene,terpinene,menthol,safrole ether and methyl eugenol,and the contents of five chemical components of limonene,terpinene,menthol,safrole ether and methyleugenol in the volatile oil of nutmeg from different origins were determined by gas chromatography.Results The PCA analysis could significantly distinguish nutmeg from different origins,and there was overlap in individual regions in the LDA analysis.The taste analysis system showed that there were obvious regional differences in sourness,bitterness and astringency of nutmeg,with methyleugenol having the strongest effect on sourness and terpinene having the strongest effect on astringene.Combined with the contents of five chemical components of limonene,terpinene,menthol,safrole ether and methyleugenol in nutmeg medicinal materials from different origins,the total content was positively correlated with sourness,bitterness and as-tringency.Conclusion Combined with the content of five chemical components,it was found that the changes of different types and quantities of chemical components would have an impact on the odor characteristics of nutmeg medicinal materials,which provided a novel and scientific and reliable technical means for the identification of medicinal materials.
nutmegodor differencesvolatile componentselectronic nose technologyelectronic tongue technology
NETL
NSTL
万方数据
