Zhong Yao Cai. 2016 Sep;39(9):2005-12.
To analyze volatile components and special aroma in fresh roots of Codonopsis Radix.
Volatile components in fresh Codonopsis Radix origined from three plant sources were analyzed by HS-GC-MS, and n-hexanal, 2-hexenal and n-hexanol were quantified by HS-GC.
64 constituents have been identified in Codonopsis Radix,which containing ten alcohol,20 aldehyde,14 terpene, three ketone, four ester, four furan, three acid, one olefin, one alkane, two sulfide and two other compounds. The total percentage of n-hexanal,2-hexenal and n-hexanol was large, which were the main volatile compounds in Codonopsis Radix. The content of n-hexanal in Lu Dangshen, Baitiao Dangshen, Wen Dangshen, Feng Dangshen and Banqiao Dangshen were 54. 89%,59. 01%,55. 07%,42. 42% and 56. 74%,which were the major volatile component contributing to special aroma in Codonopsis Radix. 61 compounds have been identified in Lu Dangshen including 8 specific compounds. An external calibration method was established for simultaneous determination of n-hexanal,2-hexenal and hexanol in Codonopsis Radix. The results showed that all calibration curve three volatile components exhibited good linearity at a range of concentrations( R2≥0. 9995). The recoveries of n-hexanal, 2-hexenal and hexanol were 100. 1%,94. 8% and 112. 6%,and the RSD were 4. 4%,8. 7% and 8. 1%,respectively. The analysis suggested that the content of n-hexanal in Lu Dangshen was 200. 41 μg / g and significantly higher than that in Banqiao Dangshen, Wen Dangshen and Feng Dangshen while similar to Baitiao Dangshen. The content of hexanol in three-year-old Lu Dangshen was significantly higher than that in twoyear-old Lu Dangshen.
The present research indicates that special aroma is an important feature of authentic Dangshen.
分析党参鲜根中的挥发性成分及特殊香气。
采用顶空-气相色谱-质谱联用（HS-GC-MS）法分析来源于三种植物来源的党参鲜根中的挥发性成分，并用顶空-气相色谱（HS-GC）法对正己醛、2-己烯醛和正己醇进行定量分析。
党参中共鉴定出64种成分，其中含10种醇类、20种醛类、14种萜类、3种酮类、4种酯类、4种呋喃类、3种酸类、1种烯烃类、1种烷烃类、2种硫化物类及2种其他化合物。正己醛、2-己烯醛和正己醇的总含量较高，是党参中的主要挥发性化合物。潞党参、白条党参、纹党参、凤党参和板桥党参中正己醛的含量分别为54.89%、59.01%、55.07%、42.42%和56.74%，是构成党参特殊香气的主要挥发性成分。潞党参中鉴定出61种化合物，其中包括8种特有化合物。建立了同时测定党参中正己醛、2-己烯醛和己醇的外标法。结果表明，三种挥发性成分的校准曲线在一定浓度范围内均呈现良好的线性关系（R2≥0.9995）。正己醛、2-己烯醛和己醇的回收率分别为100.1%、94.8%和112.6%，相对标准偏差（RSD）分别为4.4%、8.7%和8.1%。分析表明，潞党参中正己醛含量为200.41μg/g，显著高于板桥党参、纹党参和凤党参，与白条党参相近。三年生潞党参中己醇含量显著高于二年生潞党参。
本研究表明，特殊香气是道地党参的重要特征。
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