ABSTRACT
Composition of Helichrysum italicum subsp. italicum essential oil showed chemical variability according to vegetation cycle, environment, and geographic origins. In the present work, 48 individuals of this plant at different development stages and the corresponding root soils were sampled: i) 28 volatile components were identified and measured in essential oil by using GC and GC/MS; ii) ten elements from plants and soils have been estimated using colorimetry in continuous flux, flame atomic absorption spectrometry, or emission spectrometry (FAAS/FAES); iii) texture and acidity (real and potential) of soil samples were also reported. Relationships between the essential-oil composition, the inorganic plant composition, and the soil characteristics (inorganic composition, texture, and acidity) have been established using multivariate analysis such as Principal Component Analysis (PCA) and partial Redundancy Analysis (RDA). This study demonstrates a high level of intraspecific differences in oil composition due to environmental factors and, more particularly, soil characteristics.
Subject(s)
Helichrysum/chemistry , Inorganic Chemicals/analysis , Oils, Volatile/analysis , Soil/analysis , Inorganic Chemicals/chemistry , Oils, Volatile/chemistry , Oils, Volatile/classification , Principal Component Analysis , Regression AnalysisABSTRACT
Eudesm-5-en-11-ol was isolated from the oil of Helichrysum italicum and its structure was elucidated by 1D and 2D NMR spectroscopy.
