宁夏六盘山区辽东栎（Quercus liaotungensis Koidz）是我国重要的橡木资源，目前对其在葡萄酒酿造方面的应用研究较少。以宁夏六盘山区辽东栎和美国橡木、法国橡木为材料，采用电镜与化学成分分析方法，研究不同产地橡木木质结构和主要化学成分的差异。结果表明，法国橡木导管孔径大、纹理较粗，质地疏松；辽东栎纹理清晰细密，导管孔径小，富含侵填体，质地紧实，与美国橡木接近，因此辽东栎可采用美国橡木的制桶工艺。通过化学成分分析发现，美国橡木水分含量显著高于法国橡木和辽东栎，辽东栎的灰分、纤维素含量显著高于法国橡木与美国橡木，但单宁含量与美国橡木无显著差异，均显著低于法国橡木。木质素含量与其他产地橡木没有显著差异，说明辽东栎陈酿的葡萄酒具有极大释放芳香的潜力。%Quercus liaotungensis Koidzas from Liupan Mountain regions is the main oak resource in China. However, the research on its appli-cation in wine-making industry is rare. In this study, Quercus liaotungensis Koidz from Liupan Mountain regions, and American and French oaks were used as the research objects. The difference in wood structure and main chemical components among oaks from different regions was investigated by scanning electron microscope and chemistry assay. The results showed that, French oak had large vessel diameter, coarse grain of wood, and loose wood texture;Quercus liaotungensis Koidz had clear grains, smaller vessel diameter and rich oak tyloses, and its wood tex-ture is compaction, more close to American oaks. Accordingly, the production process of oak barrel with Quercus liaotungensis Koidz can be the same as that with American oaks. Chemical composition assay indicated that moisture content of American oak was higher than Quercus li-aotungensis Koidz and French oaks, but ash and cellulose content of Quercus liaotungensis Koidz was significantly higher than American and French oaks, and tannin content of Quercus liaotungensis Koidz was the same as America oak but significantly lower than French oak. There is no evident difference in xylogen content for three kinds of oaks. The study has proved that Quercus liaotungensis Koidz has great potentials for aroma-producing in wine aging process.
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