北京林业大学学报2012，Vol.34Issue(3)：137-141,5.
不同产地地枫皮的红外光谱和化学计量学快速评价
Rapid assessment of infrared spectroscopy and ehemometrics of lllicium difengpi from different regions by fourier transform.
摘要
Abstract
In order to rapidly select the germplasm with high medical compositions as well as assessing the quality of Illicium difengpi from different regions, combined with the chemometrics software such as principal componential analysis model （PCA） and soft independent modeling of class analogy （SIMCA））, the fourier transform infrared spectroscopy （FTIR） was utilized to investigate I. difengpi from different regions. Meanwhile, extracting loading factors from PCA model were taken to analyze the differences of chemical composition among determined samples. The results were listed as follows ： firstly, when the data of principal analysis model were preprocessed by standard normal variate （SNV） , the first three principal components could account for 87% variance information in fingerprint and the samples were formed into 7 different categories in principal component space. Secondly, the identification model of SIMCA could be successfully applied to predict unknown samples from different regions and the recognition rate was up to 100%. Last but not lest, the loading factor analysis demonstrated that the content of difengpin,magnolol, aromatic mixture from A, B and E was higher than other regions among identified samples. In addition, the differences of aromatic mixture of I. difengpi mainly embodied in content difference of quercetin among determined samples in different regions.关键词
地枫皮/红外光谱/主成分分析/载荷因子分析/簇类独立软模式法Key words
Illicium difengpi/infrared spectra/principal component analysis/loading factor analysis/SIMCA分类
农业科技引用本文复制引用
唐辉,孔德鑫,梁惠凌,王满莲,史艳财,韦记青..不同产地地枫皮的红外光谱和化学计量学快速评价[J].北京林业大学学报,2012,34(3):137-141,5.基金项目
国家自然科学基金项目（31040014）、中国科学院“西部之光”人才培养计划项目（科发人教字2009-24）、广西科技攻关项目（10124008-1）、广西植物研究所科学研究基金项目（11008）. （）
