title: [Determination of hesperidin content in guogongjiu medicinal wine based on NIR spectrometry and least squares support vector machines].
abstract: Near-infrared spectroscopy (NIRS) combined with least squares support vector machines (LS-SVM) was used to establish a new method for the determination of the hesperidin content in guogongjiu medicinal wine. Firstly, training set was partitioned by Kernard-Stone (KS) algorithm. Secondly, spectral pretreatment methods were discussed in detail, comparing smoothing, rangescaling, autoscaling, first derivative, second derivative, along with those methods combined. Smoothing, first derivative and rangescaling were used for the pretreatment of the NIR spectra of guogongjiu medicinal wine. Thirdly, the effective interval was selected for 8211-8312 and 9712-9808 cm(-1) by synergy interval partial least squares (siPLS). Finally, the model was established by LS-SVM, the root mean square error of cross validation (RMSECV) is 0.001, root mean square error of prediction (RMSEP) is 0.004, and relative deviation of predicting set is less than 5%. It was compared with siPLS, radial basis function neural network (RBF-NN), and SVM, The result shows that the method is rapid, non-destructive, and credible. It is an effective measurement for determining the hesperidin content in guogongjiu medicinal wine.
authors: Hunan Provincial Research Institute of Agricultural Product Processing, Changsha 410125, China. zhuxiangrong1119@sina.com
authors: Xiang-rong
authors: XR
authors: Zhu
authors: Yang
authors: Y
authors: Shan
authors: Gao-yang
authors: GY
authors: Li
authors: Qiang
authors: Q
authors: Fan
authors: Xin-yuan
authors: XY
authors: Shi
authors: Yan-jiang
authors: YJ
authors: Qiao
authors: Zhuo-yong
authors: ZY
authors: Zhang
mesh_terms: D000465:Algorithms; D006569:Hesperidin / Q000032:analysis*; D016018:Least-Squares Analysis; D016571:Neural Networks, Computer; D019265:Spectroscopy, Near-Infrared; D060388:Support Vector Machine; D014920:Wine / Q000032:analysis*
chemical_list: D006569:Hesperidin