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中国精品科技期刊2020
张晶晶, 刘贵珊, 任迎春, 康宁波, 马超. 冷鲜滩羊肉挥发性盐基氮变化的高光谱动力学模型构建[J]. 食品工业科技, 2019, 40(4): 245-250,256. DOI: 10.13386/j.issn1002-0306.2019.04.040
引用本文: 张晶晶, 刘贵珊, 任迎春, 康宁波, 马超. 冷鲜滩羊肉挥发性盐基氮变化的高光谱动力学模型构建[J]. 食品工业科技, 2019, 40(4): 245-250,256. DOI: 10.13386/j.issn1002-0306.2019.04.040
ZHANG Jing-jing, LIU Gui-shan, REN Ying-chun, KANG Ning-bo, MA Chao. Hyperspectral Dynamics Modeling for the Total Volatile Basic Nitrogen in Cold Fresh Tan-mutton[J]. Science and Technology of Food Industry, 2019, 40(4): 245-250,256. DOI: 10.13386/j.issn1002-0306.2019.04.040
Citation: ZHANG Jing-jing, LIU Gui-shan, REN Ying-chun, KANG Ning-bo, MA Chao. Hyperspectral Dynamics Modeling for the Total Volatile Basic Nitrogen in Cold Fresh Tan-mutton[J]. Science and Technology of Food Industry, 2019, 40(4): 245-250,256. DOI: 10.13386/j.issn1002-0306.2019.04.040

冷鲜滩羊肉挥发性盐基氮变化的高光谱动力学模型构建

Hyperspectral Dynamics Modeling for the Total Volatile Basic Nitrogen in Cold Fresh Tan-mutton

  • 摘要: 为探究基于高光谱成像技术预测滩羊肉挥发性盐基氮的可行性并寻找最佳预测模型。采集200个滩羊肉样本在波长400~1000 nm处的高光谱图像,采用蒙特卡洛检测法剔除异常样本;应用竞争性自适应重加权(CARS)、无信息变量消除(UVE)和连续投影(SPA)算法互相结合对原始光谱进行敏感波点提取;分别建立了冷鲜滩羊肉挥发性盐基氮变化的近红外光谱定量检测模型和其变化规律的动力学模型。结果表明:采用偏最小二乘回归(PLSR)建立的冷鲜滩羊肉挥发性盐基氮模型预测效果最好,预测相关系数Rp为0.866,均方根误差RMSEP为3.790。同时,将近红外光谱模型应用于挥发性盐基氮含量随时间变化的零级反应动力学模型中,得到模型的相关系数R为0.915。研究结果表明:结合动力学模型的近红外光谱技术可通过滩羊肉挥发性盐基氮含量的变化预测其安全贮藏时间。

     

    Abstract: To explore the feasibility of predicting the total volatile basic nitrogen in Tan-mutton by hyperspectral imaging technology and find the best prediction model. Hyperspectral images of 200 mutton samples were collected in the wavelength range of 400~1000 nm, the monte carlo method was used to eliminate abnormal samples. Campetitive adaptive reweighted sampling (CARS), uninformative variable elimination (UVE) and successive projections algorithm (SPA) combination methods were used to superimpose the original spectrum and extract the sensitive wave points. Then the near-infrared spectroscopy quantitative model of the total volatile base nitrogen in mutton and the dynamics model of its variation were established. The results showed that the prediction model of the total volatile basic nitrogen was established by partial least squares regression (PLSR).The prediction correlation coefficient Rp was 0.866 and the root mean square error RMSEP was 3.790. At the same time, the near-infrared spectroscopy model was applied to the zero-order reaction kinetics model of the total volatile basic nitrogen with time, and the correlation coefficient of the model was 0.915.The results demonstrated that the near-infrared spectroscopy technique combined with the kinetic model would predict the safe storage time of the total volatile basic nitrogen in Tan-mutton.

     

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