摘要
目的研究不同产地大白菊气味指纹变化。方法通过电子鼻检测不同产地大白菊样品气味在传感器上的响应值,采用主成分分析法(PCA)、判别因子分析(DFA)等两种方法进行分析。结果不同产地大白菊样品经PCA和DFA分析后能明显分开。结论电子鼻结合PCA和DFA分析技术,可作为大白菊产地鉴别手段。
Objective To determine the odor differences among "Dabaiju" samples from different regions. Methods Evaporability composition of "Dabaiju" was sampled from headspace of emanating, then response values was obtained. Principal component analysis (PCA) and discriminant factor analysis (DFA) were used to combine the optimum feature parameters. Results "Dabaiju" samples from different regions could be clearly separated by PCA and DFA. Conclusion The electronic nose combined with PCA and DFA could be applied to identify the origin of"Dabaiiu".
出处
《现代中药研究与实践》
CAS
2012年第1期16-18,共3页
Research and Practice on Chinese Medicines
基金
国家自然科学基金资助项目(编号:30901972)
高等学校省级优秀青年人才基金重点项目(编号:2010SQRL182ZD)
关键词
电子鼻
大白菊
产地
鉴别
Electronic Nose
Dabaiju
origin
identification