维吾尔族医常用药材榅桲子挥发性成分GC-MS分析

GC-MS Analysis on Volatile Constituents of Cydonia oblonga Seeds in Uighur Medicine

目的:分析榅桲子的挥发性成分,为药用植物榅桲子的开发利用提供试验依据。方法:利用水蒸气蒸馏法提取榅桲子挥发油,采用气相色谱-质谱(GC-MS)联用技术结合保留指数法对维吾尔族医常用药材榅桲子挥发性成分进行分析,并用峰面积归一化法测定相对百分含量。结果:在榅桲子中分离得到38个化合物,鉴定24个化合物,占相对总含量的98.56%。其主要成分为苯甲醛(46.37%),顺-9-十八碳烯酸(30.54%),棕榈酸(6.13%),胡萝卜次醇(2.37%),3-甲基正丁醛(1.81%),糠醛(1.37%),2-甲基正丁醛(1.22%),2-丁基苯乙酸(1.17%)。结论:榅桲子挥发性成分主要为醛类(51.92%),其次为酸类(31.25%)。

Objective： To analyze the volatile constituents of Cydonia oblonga seeds and provide experimental basis for reasonable development and utilization of C. oblonga seeds. Method： Steam distillation method was used to extract the volatile oil of C. oblonga seeds,and its volatile constituents were analyzed by gas chromatography-mass spectrometry（ GC-MS） combined with retention indices. Their relative percentage contents were determined with peak area normalization method. Result： The 38 chemical constituents were isolated from the C. oblonga seeds,and 24 compounds of them were identified,accounting for 98. 56% of the total volatile oil. The main constituents included benzaldehyde（ 46. 37%）,（ Z）-octadec-9-enoic acid（ 30. 54%）,n-hexadecanoate（ 6. 13%）,carotol（ 2. 37%）,3-methyl-butyraldehyde（ 1. 81%）,furfural（ 1. 37%）,2-methyl-butyraldehyde（ 1. 22%）,and 2-butyl benzene acetate（ 1. 17%）. Conclusion： The aldehydes（ 51. 92%） were the main volatile constituents in C. oblonga seeds,followed by acids（ 31. 25%）.