DOI: https://doi.org/10.55373/mjchem.v26i1.271

Keywords: Lauraceae; Lindera; essential oil; multivariate; PCA; HCA

Abstract

Essential oils hold tremendous medicinal attributes and are greatly exploited industrially worldwide. Lindera is an important genus of the Lauraceae family of plants which are known for their medicinal values. In the present study, eleven studies reported on Lindera essential oils were selected and reviewed. Then the variability of essential oil components in the genus Lindera were assessed by multivariate analysis. The chemical analysis enabled the identification of qualitative and quantitative differences among the essential oils. The essential oils were characterized by high proportions of germacrene B, spathulenol, nerolidol, β-caryophyllene, dihydromyrcene, furanosesquiterpenoid, sesquithuriferol, and linalool. Then, the differences in the chemical profiles of the essential oil were confirmed by the multivariate statistical analysis, which was determined via principal component analysis (PCA) and hierarchical clustering analysis (HCA). The analysis classified the Lindera species into four different clusters. Group A of cluster analysis (L. obtusiloba) was highly correlated with α-copaene and β-eudesmol and group B of cluster analysis (L. strychnifolia, L. umbellata and L. pulcherrima) were highly correlated with linalool and 1,8-cineole. Moreover, group C of cluster analysis (L. erythrocarpa, L. pipericarpa, L. nacusua and L. glauca) were highly correlated with spathulenol, α-humulene and β-phellandrene, whereas for group D (L. chunii, L. communis and L. fragrans) were highly correlated with β-farnesene and β-caryophyllene. This data analysis may be used for the identification and characterization of essential oils from different Lindera species that are to be used as raw materials of traditional herbal products. However, there is much variation in the essential oil compositions of Lindera essential oils, both within subspecies and between geographical locations; much additional investigation is necessary to more fully characterize the volatile phytochemistry of this plant.