Calibration of somatic cell count in milk based on near-infrared spectroscopy
Calibration of somatic cell count in milk based on near-infrared spectroscopy
复制标题
基于近红外光谱法校准牛奶中的体细胞计数
DOI：
10.1016/s0003-2670(01)01373-3
复制
发表时间：
2001
影响因子：
6.2
通讯作者：
R. Tsenkova
中科院分区：
文献类型：
--
作者：
V. Pravdova;B. Walczak;D. Massart;S. Kawano;K. Toyoda;R. Tsenkova
提出了一种基于非均质牛奶近红外光谱的体细胞数预测PLS模型。从泌乳早期（分娩后第7天至第29天）的奶牛中采集原料乳样品。在400- 1100 nm范围内测量了近红外光谱。作为参比方法，采用荧光光电法。研究了不同的预处理方法。采用稳健的PLS回归方法处理数据集中的异常值，采用无信息变量剔除-偏最小二乘法（UVE-PLS）剔除无信息变量。最终的模型是可以接受的原料奶中SCC的预测。
A PLS model for prediction of somatic cell count (SCC) based on near-infrared (NIR) spectra of unhomogenized milk is presented in the study. Samples of raw milk were collected from cows in the early lactation period (from 7th to 29th day after parturition). The NIR spectra were measured in the region 400–1100nm. As reference method a fluoro-opto-electronic method was applied. Different preprocessing methods were investigated. The robust version of PLS regression was applied to handle outliers present in the dataset and the uninformative variable elimination–partial least squares (UVE–PLS) method was used to eliminate uninformative variables. The final model is acceptable for prediction of SCC in raw milk.