中国烟草科学2018，Vol.39Issue(3)：89-97,9.DOI:10.13496/j.issn.1007-5119.2018.03.012
近红外光谱检测烟叶化学成分的整叶采样方式研究
Study on Spectral Acquisition Modes in Determining Chemical Components of Intact Tobacco Leaf by NIRS
摘要
Abstract
When the near-infrared diffuse reflection spectroscopy is used in detecting the quality of intact tobacco leaves, there is no guarantee of spectral representativeness and repeatability because of the large area of a tobacco leaf and the inhomogeneous distribution of chemical compositions in it. In order to solve this problem, a systematic study of sampling modes for intact tobacco leaf had been carried out. The spectral information divergence combined with gradient angle method (SID-GA) was applied to calculate the intact leaf spectrum similarity of seven sampling modes and the sum of ranking differences (SRD) was employed to evaluate the partial least squares (PLS) quantitative models of total sugar, reducing sugar, nicotine, total nitrogen, potassium and chlorine. The results showed that the most suitable sampling modes were "8-point mode", "6-point mode" and "8-point mode" for B2F, C3F and X2F tobacco leaves, respectively. Taking the number of spectral scanning points and performance of PLS models into account, the "8-point mode" can be deemed the most suitable for spectral collection of intact leaf and "6-point mode" takes the second place. It can be concluded that the selected sampling mode with fewer points, higher representative and better repeatability for intact leaf has practical significance for improving predicting efficiency and accuracy of tobacco quality.关键词
近红外光谱/SID-GA/排序差异和值法/PLS定量模型/整叶采样/8点法Key words
near-infrared spectroscopy/SID-GA/SRD/PLS quantitative models/sampling for intact leaf/8-point mode分类
轻工纺织引用本文复制引用
宾俊,范伟,刘仁祥..近红外光谱检测烟叶化学成分的整叶采样方式研究[J].中国烟草科学,2018,39(3):89-97,9.基金项目
贵州省烟草品质遗传改良与生物转化科技创新人才团队{黔科合人才团队[2015]4011} （）
贵州省高层次创新型人才培养计划——百层次人才{黔科合平台人才[2016]5663} （）
