文章摘要
干草果中的关键香气成分分析
Analysis of the Key Odorants in Dried Amomum tsao-ko Crevost et Lemaire
投稿时间:2019-06-14  修订日期:2019-08-01
DOI:
中文关键词: 草果  气相色谱-质谱-嗅觉检测器联用  香气活性成分  香气活性值  关键香气成分
英文关键词: Amomum tsao-ko Crevost et Lemaire  GC-MS-O  odor-active constituents  OAVs  key odorants
基金项目:
作者单位E-mail
徐士琪 北京工商大学 809267012@qq.com 
白佳伟 北京工商大学  
杨文熙 北京工商大学  
刘玉平 北京工商大学 liuyp@th.btbu.edu.cn 
孙宝国 北京工商大学  
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中文摘要:
      草果是一种天然香料植物,为了确定干草果中的关键香气成分,采用溶剂萃取结合溶剂辅助风味成分蒸发的方法提取了干草果壳和干草果种仁中的挥发性成分,使用气相色谱-质谱-嗅觉检测器联用仪对所得提取物进行了分析,鉴定出22个香气活性区域;通过与标准品的香气特征、质谱、保留指数进行比对,对它们进行了定性。以2-辛醇和2-异丙基苯酚为内标,对22个香气活性成分(OACs)进行了定量分析,定量结果表明OACs在草果种仁中的含量大于在草果壳中的含量。计算了OACs的香气活性值;根据香气活性值,确定出了干草果中的19种关键香气成分。其中,反-2-癸烯醛、1,8-桉叶素、芳樟醇、反-2-十二烯醛、辛醛、反-2-辛烯醛、癸醛、β-蒎烯、正己醛、α-松油醇、香兰素是果壳和种仁共有的关键香气物质,它们使得二者香气具有相似之处;而(E,E)-2,4-癸二烯醛、壬醛、橙花醇、香叶醇、香叶醛、乙酸香叶酯、反式橙花叔醇、4-松油醇是导致二者香气有所不同的主要成分。
英文摘要:
      Amomum tsao-ko Crevost et Lemaire (ACL) is a kind of natural flavor plant. In order to determine the key odorants in dry ACL, the volatiles in the pericarp and kernel of Dried ACL were extracted by direct solvent extraction combined with solvent-assisted flavor evaporation (SAFE), and the isolates were analyzed by gas chromatography-mass spectrometry-olfactometry (GC-MS-O). Twenty-two odor-active regions were detected, and 22 odor-active components (OACs) were identified by comparing the odor characteristics, MS data, and retention indices with those of authentic compounds. OACs were quantitated by using 2-octanol and 2-isopropylphenol as the internal standards. The results showed that the concentrations of OACs in kernel were higher than those in pericarp. Their odor activity values (OAVs) were calculated. Based on the OAVs obtained, 19 flavor compounds were determined as the key odorants of dried ACL. Some key odorants, including (E)-2-decenal, 1,8-cineole, linalool, (E)-2-dodecenal, octanal, (E)-2-octenal, decanal, β-pinene, hexanal, α-terpineol and vanillin, were common in the pericarp and kernel of Dried ACL, and they made the pericarp and the kernel have some similarities in odor attributes. However, some odorants, including (E,E)-2,4-decadienal, nonanal, nerol, geraniol, geranial, geranyl acetate, (E)-nerolidol and 4-terpineol, only occurred in the pericarp or the kernel, which made their odors different from each other.
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