Variable selection based near infrared spectroscopy quantitative and qualitative analysis on wheat wet gluten

文献类型： 外文期刊

第一作者： Lu, Chengxu

作者： Lu, Chengxu;Zhang, Yinqiao;Wei, Chongfeng;Mao, Wenhua;Jiang, Xunpeng;Zhou, Xingfan;Zhang, Naiqian

作者机构：

关键词： near infrared spectroscopy;wheat;wet gluten;variable selection

期刊名称：AOPC 2017: OPTICAL SPECTROSCOPY AND IMAGING

ISSN： 0277-786X

年卷期： 2017 年 10461 卷

页码：

收录情况： SCI

摘要： Wet gluten is a useful quality indicator for wheat, and short wave near infrared spectroscopy (NIRS) is a high performance technique with the advantage of economic rapid and nondestructive test. To study the feasibility of short wave NIRS analyzing wet gluten directly from wheat seed, 54 representative wheat seed samples were collected and scanned by spectrometer. 8 spectral pretreatment method and genetic algorithm (GA) variable selection method were used to optimize analysis. Both quantitative and qualitative model of wet gluten were built by partial least squares regression and discriminate analysis. For quantitative analysis, normalization is the optimized pretreatment method, 17 wet gluten sensitive variables are selected by GA, and GA model performs a better result than that of all variable model, with R-V(2)=0.88, and RMSEV=1.47. For qualitative analysis, automatic weighted least squares baseline is the optimized pretreatment method, all variable models perform better results than those of GA models. The correct classification rates of 3 class of <24%, 24- 30%, >30% wet gluten content are 95.45, 84.52, and 90.00%, respectively. The short wave NIRS technique shows potential for both quantitative and qualitative analysis of wet gluten for wheat seed.

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