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溶剂萃取-中心切割多维色谱-质谱法测定烟草主要中性香味成分

Determination of Main Neutral Aroma Components in Tobacco by Solvent Extraction with Heart-cut Multidimensional Gas Chromatography-Mass Spectrometry

  • 摘要: 采用溶剂萃取-中心切割多维气相色谱-质谱技术(MDGC/MS)建立了一种烟草主要中性香味成分的分析方法。0.5 g烟样经5 mL乙醚萃取和2 mL 5%H2SO4酸洗,静置过夜后萃取液用多维气相色谱-质谱分析;以甲基丁子香酚为内标,对茄酮、β-大马酮、香叶基丙酮、β-紫罗兰酮、巨豆三烯酮和二氢猕猴桃内酯等中性香味成分进行了定性定量测定,并与同时蒸馏萃取(SDE)-气质联用(GC/MS)法进行比较。结果表明:各待测组分检出限在0.02~0.18μg/mL之间,回收率为80.0%~123.4%,日内相对标准偏差 ≤7.5%。该方法快速、简便、准确,适用于烟草中性香味成分的批量测试。

     

    Abstract: A method for determining the main neutral aroma components in tobacco was developed by combining solvent extraction with heart-cut multidimensional gas chromatography-mass spectrometry (MDGC-MS). Tobacco sample(0.5 g)was extracted by ethyl ether(5 mL), the extract was washed with 5% H2SO4(2 mL)subsequently, then analyzed by MDGC-MS after standing overnight. The neutral aromatic components,including solanone, β-damascenone, geranylacetone, β-ionone, megastigmatrienone and dihydroactinidiolide were determined qualitatively and quantitatively by using methyl eugenol as the internal standard. Further,this method was compared with simultaneous distillation extraction(SDE)-gas chromatography-mass spectrometry(GC/MS). The results showed that:The detection limit of the analytes ranged from 0.02 to 0.18μg/mL, the recoveries were between 80.0% to 123.4% with the intra-day relative standard deviation(RSD) ≤7.5%. The developed method is simple, fast, accurate and suitable for the analysis of neutral aroma compounds in batches of tobacco samples.

     

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