ABSTRACT The essential oils from Santalum album heartwood is known as East Indian sandalwood oil and has been approved for daily intake as food recently. In order to develop a quick authentication method for East Indian sandalwood oil, the essential oils are hydro distillated from trunks of five Santalum species (Santalum album, Santalum lanceolatum, Santalum spicatum, Santalum austrocaledonicum, and Santalum yasi) and assessed by attenuated total reflectance-Fourier transform mid-infrared spectroscopy (ATR-FTIR). The mid-red spectra obtained from essential oils from all five Santalum species are similar and assigned to chemicals with the same functional groups. Most essential oils from other four Santalum species can be discriminated from those from Santalum album by principal component analysis (PCA). In addition, the results of partial least square (PLS) models suggested the strong correlations between santalols proportions quantified by GC-MS and ATR-FTIR spectra of essential oils, which suggests that FTIR combined with chemometric analysis might be a rapid analytical technique for sandalwood oil quality assessments.

中文翻译：

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使用 ATR-傅立叶变换中红外光谱和 GC-MS 结合化学计量分析评估五种檀香精油

摘要 檀香心材精油被称为东印度檀香油，最近已被批准作为日常食用。为了开发一种快速鉴定东印度檀香油的方法，精油从五种檀香树种（檀香木、披针叶檀香、Santalum spicatum、Santalum austrocaledonicum 和 Santalum yasi）的树干中进行水力蒸馏，并通过衰减全反射率进行评估 -傅里叶变换中红外光谱 (ATR-FTIR)。从所有五种檀香精油中获得的中红光谱是相似的，并且属于具有相同官能团的化学品。通过主成分分析 (PCA)，可以将来自其他四种檀香树种的大多数精油与来自檀香木的精油区分开来。此外，