近红外与傅里叶变换红外光谱技术 对麦麸固体发酵饲料中不同成分的监测研究.

To on-line monitor the process variables of different components in solid state fermentation of wheat bran by spectral technology, the contents of protein, water, total phenol and crude fiber in 61 wheat bran solid fermented feed were measured based on Chinese national standard metheds. The near infrared spectrum and Fourier transform infrared spectrometer of the samples was collected and analyzed. The spectra was performed with 9 different preprocessing methods, such as standard normal variate transformation (SNV), multiplicative scatter correction (MSC) and smoothing (SG). NIR and FT-IR quantitative models of feed nutrients were established and compared by partial least squares (PLS). The results showed that the Rc² and Rp² were both great than 0.8, root mean square error of cross validation (RMSECV) was less than 2.0, root mean square error of calibration (RMSEC) and root mean square error of prediction (RMSEP) were less than 1.0, respectively. NIR and FT-IR quantitative analysis models have good stability. The process parameters of solid-state fermentation of wheat bran were rapidly monitored by NIR and FT-IR is feasible. [ABSTRACT FROM AUTHOR]