基于旋转锥体柱蒸馏技术的烟草提取物挥发性成分
Volatile components extracted from tobacco extracts by spinning cone column distillation technology
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摘要:
为明确旋转锥体柱(Spinning cone column,SCC)蒸馏技术对提取烟草提取物中挥发性成分的影响,通过SCC蒸馏技术获取烟草提取物中的挥发性组分,采用正交实验优化提取工艺参数,利用GC-MS结合化学计量学方法对比分析SCC蒸馏技术与传统提取方式获取的烟草提取物挥发性组分的差异性。结果表明:①采用SCC蒸馏技术获取烟草提取物挥发性组分的最佳工艺参数为塔内效率8%、原料供给量500 L/h,料液比1∶2。②用SCC蒸馏技术所得烟草挥发性组分中类胡萝卜素降解产物的质量分数远高于传统提取方式,棕色化反应产物的质量分数则远低于传统提取方式。③主成分分析(PCA)和层次聚类分析(HCA)结果表明SCC蒸馏技术与传统提取方式获取的挥发性组分存在明显差异,OPLS-DA共筛选出40种差异挥发性成分,其中,SCC蒸馏技术以类胡萝卜素降解产物为主,传统提取方式以棕色化反应产物为主。该研究结果可为烟草提取物精细化加工和高品质烟草源香原料的开发提供参考。
Abstract:To investigate the effects of spinning cone column (SCC) distillation technology on the extracted volatile components from tobacco extracts, the volatile components from tobacco extracts were obtained by SCC distillation technology and the extraction parameters were optimized by an orthogonal test. The chemical differences of volatile components between SCC distillation technology and the traditional extraction methods were compared and analyzed by GC-MS combined with chemometrics. The results showed that: 1) The optimal SCC distillation efficacy to obtain volatile components from tobacco extracts were obtained with a tower efficiency of 8%, a raw material feed rate of 500 L/h, and a material-liquid ratio of 1∶2. 2) The mass fractions of carotenoid degradation products in the tobacco volatile fractions obtained by the SCC distillation technology were much higher than those obtained by the traditional extraction methods, while the mass fractions of browning reaction products were the opposite. 3) The results of principal component analysis (PCA) and hierarchical clustering analysis (HCA) showed that there were significant differences in the volatile components obtained by SCC distillation technology and the traditional extraction methods. A total of 40 differential volatile components were screened by OPLS-DA, among which the differential volatile components obtained by the SCC distillation technology were dominated by carotenoid degradation products, whereas the differential volatile components obtained by the traditional methods were dominated by browning reaction products. The results of this study provide insights to refine the processing of tobacco extracts and the development of high-quality tobacco-derived flavors.
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