中药人参与西洋参饮片的电子鼻检测方法及识别模式

Detection method and pattern recognition of ginseng and American ginseng pieces by electronic nose

目的:利用电子鼻技术研究中药人参与西洋参饮片的气味检测方法进行分析,采用PCA模式识别方法,达到准确、快速鉴别人参、西洋参饮片的目的。方法:通过正交试验对人参、西洋参样品的粒径,检测样品量,顶空进样量,孵化时间,孵化温度等重要因素进行筛选,确定人参、西洋参饮片电子鼻检测的最佳条件;并采用归一法对数据进行特征提取,通过PCA多元统计学方法对特征数据进行分析。结果:建立了人参与西洋参饮片的电子鼻检测方法,得到人参、西洋参气味识别指纹图谱,建立了人参与西洋参饮片的PCA识别模式。结论:本实验采用电子鼻技术建立了人参与西洋参饮片准确而快速的鉴别方法,为中药真伪的快速鉴别及气味的科学化、标准化研究提供了新的思路。

Objective： To distinguish the ginseng and American ginseng pieces accurately and rapidly by electronic nose technology and principal component analysis（PCA） method.Method： The optimum conditions of electronic nose for ginseng and American ginseng pieces,such as sample size and volume,headspace volume,incubation time and temperature were determined by the orthogonal test,the data were processed by the normalization method and the preprocessed data were analyzed PCA.Result： The detection methods of ginseng and American ginseng pieces was established by electronic nose,and the odor fingerprint figures of ginseng and American ginseng pieces were obtained,and ginseng and American ginseng pieces were distinguished by PCA recognition pattern.Conclusion： A new accurate and rapid method to distinguish ginseng and American ginseng pieces was established by electronic nose detection.