Research on the Quantitative Determination of Lime in Wheat Flour by Near-Infrared Spectroscopy
文献类型: 外文期刊
作者: Wang Dong 1 ; Ma Zhi-hong 1 ; Pan Li-gang 1 ; Han Ping 1 ; Zhao Liu 1 ; Wang Ji-hua 1 ;
作者机构: 1.Beijing Res Ctr Agrifood Testing & Farmland Monit, Beijing 100097, Peoples R China
2.Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China
3.China Agr Univ, Coll Food Sci & Nutr Engn, Beijing 100083, Peoples R China
关键词: Near-infrared spectroscopy;Partial least square;Wheat flour;Lime;Calcium carbonoxide
期刊名称:SPECTROSCOPY AND SPECTRAL ANALYSIS ( 影响因子:0.589; 五年影响因子:0.504 )
ISSN: 1000-0593
年卷期: 2013 年 33 卷 1 期
页码:
收录情况: SCI
摘要: The safety of wheat flour is always focused by all quarters of society. Based on comparing the feature of NIR spectra of calcium oxide, calcium hydroxide and calcium carbonate in this research, the diffuse reflection NIR spectra of the wheat flour samples with different content of calcium oxide, calcium hydroxide and calcium carbonate mixed in were collected. The calibration models of lime and calcium carbonate were developed by partial least square algorithm, with the validation method of cross validation. The result indicated that the determination coefficients (R-2) of lime and calcium carbonate are 99.80% and 96.98% respectively, the root mean square errors of calibration set are 0.19 and 0.34 respectively; the root mean square errors of cross Validation set are 0.26 and 0.75 respectively; the root mean square errors of prediction set are 0.63 and 0.44 respectively; the ratio performance deviations (RPD) are 8.57 and 5.24 respectively, which indicated that the calibration models were precise enough to adapt to the on-site rapid determination of lime in wheat flour. The result of F-test indicated that a very remarkable correlation exists between the estimated and specified values of the calibration sets and the external validation sets. This research, to some extent, will provide some reference methods for the rapid determination of wheat flour for quality safety, which is important for the quality control of wheat flour.
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