食品科学2018，Vol.39Issue(24)：289-296,8.DOI:10.7506/spkx1002-6630-201824043
基于高光谱技术的金银花硫含量快速检测模型建立
Development of a Predictive Model for Rapid Detection of Sulfur Content in Honeysuckle Based on Hyperspectral Imaging Technology
摘要
Abstract
For rapid and non-destructive detection of sulfur content in honeysuckle,the flowers of Lonicera japonica Thunb.,hyperspectral imaging technology combined with chemometrics was applied to develop a predictive model for detecting sulfur-fumigated honeysuckle with different sulfur concentrations.Hyperspectral images of non-fumigated and sulfur-fumigated honeysuckle samples with four concentration gradients of 0％,0.5％,1％and 1.5％on a fresh mass basis were collected and preproeessed by Savitzky-Golay smoothing filter(S_G filter),multiple scatter correct(MSC)or standard normal variate transformation(SNV).S_G filter was selected as the optimal pretreatment method.Subsequently,the processed spectral data were used to establish models using either fisher discriminant analysis(FDA)or kernel Fisher discriminant analysis(KFDA),and the results showed that KFDA had a better discrimination accuracy of 98.2％.Considering that the full-range spectral data contain a great deal of redundancy,the characteristic wavelengths were extracted by three different methods,regression coefficients(RC),Wilks criterion and RC-Wilks.As a result,the discriminant models,RC-KFDA,Wilks-KFDA and RC-Wilks-KFDA were developed.A comparison was made between these models,and the RC-Wilks-KFDA model was found to be the best one with the highest discrimination accuracy of 100％,good classification efficiency and short running time of 0.69 s.Therefore,the S_G-RC-Wilks-KFDA model could allow fast,effective and non-destructive detection of sulfur content in honeysuckle.关键词
金银花/高光谱成像技术/硫含量/快速检测Key words
honeysuckle/hyperspectral imaging/sulfur content/rapid detection分类
数理科学引用本文复制引用
冯洁,刘云宏,石晓微,王庆庆,许倩..基于高光谱技术的金银花硫含量快速检测模型建立[J].食品科学,2018,39(24):289-296,8.基金项目
国家自然科学基金河南联合项目(U1404334) （U1404334）
河南省自然科学基金项目(162300410100) （162300410100）
河南省科技攻关项目(172102310617 （）
172102210256) （）
