不同色泽谷子挥发性成分差别的研究

Volatile compounds of different colour foxtail millet

采用同时蒸馏萃取结合气相色谱-质谱联用技术分析黄、白、绿和黑色谷子挥发性成分差别,4种色泽谷子共检测到51种挥发性成分,为醛、醇、酮、碳氢、含苯衍生物、杂环和酚类物质,黄、白、绿、黑谷子分别检测出40、46、41、43种成分。不同色泽谷子挥发性成分构成较为相似,含有36种相同成分,主要体现在含量差别,己醛、壬醛、(E,E)-2,4-癸二烯醛和2-戊基呋喃为不同色泽谷子主要挥发性成分。醛类在不同色泽谷子中种类最丰富、含量最高,其成分和含量差别会给产品气味品质带来重要影响。

Volatile compounds were extracted by simultaneous distillation extraction（SDE）,gas chromatography-mass spectrometry（GC-MS） was established to determine the volatile aroma compounds in yellow,white,green and black foxtail millet.Results showed that a total of 51 compounds were identified,including aldehydes,alcohols,ketones,hydrocarbons,benzene derivatives,heterocyclics and phenols.Different foxtail millet varieties commonly have similar volatile compounds but they are present in different concentrations,and 36 same compounds were detected in four colour millet.Hexanal,nonenal,（E,E）-2,4-decadienal and 2-pentyl-furan were do minant in the all samples.Aldehydes represented the largest group in the number of volatile components identified in all of the samples.Abundant aldehydes detected in all of the samples were very important in the odour of the millet.