宽皮橘精油挥发性成分的电子鼻和GC-MS分析

Electronic nose and GC-MS analysis on volatile compounds in essential oils from mandarin (Citrus reticulata Blanco) peels

采用辊式压榨法制取椪柑、温州蜜柑、本地早蜜橘和槾橘4种宽皮橘的精油,并运用电子鼻和气相色谱—质谱联用(GC-MS)技术进行挥发性成分分析。结果表明:电子鼻的18个传感器中有5个对4种宽皮橘精油嗅味分析的响应值具有显著差异(P<0.05),通过主成分分析(PCA)可以将4种宽皮橘精油成分进行很好地区分,区分因子≥86%。GCMS分析分别从椪柑、温州蜜柑、本地早蜜橘和槾橘4种宽皮橘精油中鉴定出38,37,37,36种化合物,总计72种。其中仅11种为共有化合物,而各自特有化合物共达30种。

The essential oils were extracted from four varieties of Citrus Reticulata peels（Citrus poonensis Hort.ex Tanaka,Citrus unshiu Marc.,Citrus suceosa Hort.ex Tanaka and Citrus tardiferax Hort.ex Tanaka）by roll-pressed,and then volatile compounds were analyzed by electronic nose and gas chromatography-mass spectrometry（GC-MS）technology.The results shows that：5 kinds of the 18 sensors have a significant difference in the response values of the four kinds of Citrus Reticulata Blanco oils（P〈0.05）,electronic nose was applied to distinguish the essential oils through the principal component analysis（PCA）and the classification index was above 86%.GCMS analysis showed there were 38,37,37 and 36 compounds identified from the four kinds of essential oils,respectively,with the total of 72 compounds,11 common compounds only,and their unique compounds amounting to 30.