基于近红外光谱的掺伪乳制品鉴别模型优化
Optimization of Identification Model of Adulterated Dairy Products Based on Near Infrared Spectroscopy
DOI: 10.12677/OJNS.2019.73015, PDF,    国家自然科学基金支持
作者: 卞中悦, 贾若玉, 郭倩倩, 陈蕊, 李天骄:德州学院食品质量与安全,山东 聊城
关键词: 掺伪乳制品近红外光谱快速鉴别模型优化Adulterated Dairy Products Near Infrared Spectroscopy Rapid Identification Model Optimization
摘要: 为实现掺伪乳制品的快速鉴别,基于近红外光谱技术,采用偏最小二乘法(PLS法)建立掺伪乳制品的鉴别模型,并利用剔除异常点等方法对模型进行优化。结果表明:掺水乳制品在透射方式下,因子数为5,采用原始光谱、S-G平滑、附加散射矫正方式时定量模型最为理想,其预测集相关系数为0.9975,决定系数为0.9943;掺淀粉乳制品在透射方式下,因子数为4,采用一阶导数谱、Norris平滑、不矫正时定量模型最为理想,其预测集相关系数为0.9913,决定系数为0.9827。
Abstract: Near infrared spectroscopy (NIR) combined with partial least squares (PLS) was used to identify rapidly adulterated dairy products. Eliminating abnormal points and other methods were em-ployed to optimize the model. The results showed that for the identification of dairy products adulterated with water, the ideal model established by PLS was under transmission mode, using Spectrum, S-G smoothing method and additional scattering correction light path method, and the factor was 5, in which the correlation coefficient of prediction set (RP) was 0.9975 and the coeffi-cient of determination (R2) was 0.9943. For the identification of dairy products adulterated with starch, the best model was under transmission condition, first-order derivative spectrum, Norris smoothing method and no correction of optical path, and the factor was 4, in which the RP was 0.9913 and the R2 was 0.9827.
文章引用:卞中悦, 贾若玉, 郭倩倩, 陈蕊, 李天骄. 基于近红外光谱的掺伪乳制品鉴别模型优化[J]. 自然科学, 2019, 7(3): 96-105. https://doi.org/10.12677/OJNS.2019.73015

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