Guaiacwood oil is a common perfume ingredient used in modern compositions for its suave woody-rosy scent. This essential oil is a byproduct of the timber industry obtained by hydrodistillation of the heartwood of Bulnesia sarmientoi, a tree native from Latin America. Despite being widely used in perfumery, guaiacwood oil has been poorly described in the past. This study aims at giving an in-depth characterisation of its chemical composition as well as disclosing the odorant compounds responsible for its characteristic fragrance. Our methodology was based on a combination of fractionation and analytical techniques, including comprehensive two-dimensional gas chromatography coupled to mass spectrometry and preparative capillary-gas chromatography. The entire analytical work led to the isolation of 20 constituents among which 14 have never been reported so far in natural extracts. Each isolated compound was fully characterised by spectroscopic methods. Finally, the accurate knowledge of the chemical composition permitted the identification of the odour-active constituents by gas chromatography-olfactometry.

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对愈创木油的完整表征

愈创木油是现代组合物中常用的香水成分，因其温和的木质玫瑰色香味。这种精油是木材工业的副产品，通过对原产于拉丁美洲的树 Bulnesia sarmientoi 的心材进行水蒸馏获得。尽管在香水中被广泛使用，但愈创木油在过去的描述很差。本研究旨在对其化学成分进行深入表征，并揭示导致其特有香味的气味化合物。我们的方法基于分馏和分析技术的结合，包括与质谱联用的综合二维气相色谱和制备毛细管气相色谱。整个分析工作导致了 20 种成分的分离，其中 14 种成分迄今为止从未在天然提取物中报道过。每个分离的化合物都通过光谱方法进行了充分表征。最后，化学成分的准确知识允许通过气相色谱-嗅觉测定法识别气味活性成分。