化学计量学分辨方法和气相色谱-质谱联用法分析烟叶挥发性成分.docVIP

化学计量学分辨方法和气相色谱-质谱联用法分析烟叶挥发性成分 周菊峰1, 王小玉2, 王3 ,黄兰芳*3 (1.湘南学院化生系,郴州423000; 2. 江西省科学院应用化学研究所,南昌330029 3.衢州学院化学与制药工程系, 浙江衢州324000) 。NIST质谱库进行相似性检索而定性分析，通过总体积积分法对每一组分作定量分析。在78个分辩的色谱峰中, 得到65个组分的定性定量结果, 占挥发油总含量的88.51%。所得结果能为烟叶化学成分研究提供有的科学依据;直观推导式演进特征投影算法(HELP); 气相色谱-质谱(GC-MS);烟叶; 挥发性成分 Analysis of the volatile components in tobacco leaf by chemometric resolution methods and gas chromatography–mass spectrometry ZHOU Ju-feng1, Wang Xiao-yu2, WANG Yu-ling3,HUANG Lan-fang3 (1.Department of Biochemistry, Xiangnan College, Chenzhou423000; 2. Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang 330029 3. Department of Chemistry and Pharmaceutical, Quzhou College, Quzhou 324000) Abstract: With the help of chemometric resolution methods, a method for qualitative and quantitative determination of the volatile components in tobacco leaf by chromatography-mass spectrometry was developed. The volatile components in tobacco leaf were extracted with accelerated solvent extraction (ASE). After the overlapping chromatographic peaks were resolved into pure chromatograms and spectra with heuristic evolving latent projections (HELP), qualitative analysis was performed by similarity search in NIST library with the obtained pure mass spectrum of each component and the quantitative results were obtained by calculating the volume of total two-way response. A total of 78 components were separated and 65 components were identified, accounting for 88.51% of the total content. The obtained results can provide useful information for the study of chemical components in tobacco leaf. Key word: Chemometrics; Heuristic evolving latent projections (HELP); Gas chromatography-mass spectrometry (GC-MS); Tobacco leaf; Essential oil 烟叶挥发性成分对烟的香味起主要作用，是评价香烟商用价值的重要因素。通常采用气相色谱-质谱联用(GC-MS)法分析烟叶挥发性成分[1，2]，然而即使采用很苛刻的色谱分离过程,各组分仍然未达到良好分离。由于重叠色谱峰的存在, 因而定性定量鉴定的组分不多。然而快速发展的化学计量学分辨方法[3~9]为色谱峰的解析提供了有力的工具, 这使得分离解析烟叶等复杂体系成为可能。 本工作用化学计量学分辨方法和气相色谱-质谱联用法,建立了分析烟叶挥发性成分的方法。先用加速溶剂萃取法提取烟叶挥发性成分, 然后在适宜条件下用气相色谱-质谱