Guchu Emilia, Díaz-Maroto M Consuelo, Díaz-Maroto Ignacio Javier, Vila-Lameiro Pablo, Pérez-Coello M Soledad
Area de Tecnología de los Alimentos, Facultad de Ciencias Químicas, Campus Universitario, 10 Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
J Agric Food Chem. 2006 Apr 19;54(8):3062-6. doi: 10.1021/jf053055z.
The influence of the species and geographical origin on the volatile composition of wood samples from 80 Spanish oaks (55 Quercus petraea Liebl. and 25 Quercus robur L.) has been studied. Oak volatile components were isolated by simultaneous distillation-extraction and analyzed by gas chromatography-mass spectrometry. cis- and trans-beta-methyl-gamma-octalactones were the main constituents, the cis stereoisomer being predominant. Other important volatile components were furfural, 5-methylfurfural, guaiacol, eugenol, vanillin, or syringaldehyde. The main differences were established between species, Quercus petraea being significantly richer in volatile compounds than Quercus robur; however, the variability found among trees was high. Differences among geographical provenances were much less important than those found between species.
研究了物种和地理起源对80棵西班牙橡树（55棵岩栎和25棵欧洲栓皮栎）木材样品挥发性成分的影响。通过同时蒸馏萃取法分离橡木挥发性成分，并采用气相色谱 - 质谱联用仪进行分析。顺式和反式β - 甲基 - γ - 辛内酯是主要成分，顺式立体异构体占主导。其他重要的挥发性成分有糠醛、5 - 甲基糠醛、愈创木酚、丁香酚、香草醛或紫丁香醛。主要差异存在于物种之间，岩栎的挥发性化合物含量明显高于欧洲栓皮栎；然而，树木之间的变异性很大。地理种源之间的差异远不如物种之间的差异重要。
