ABSTRACT
ABSTRACT: The aim was to develop a nonlinearity model of quantitative analysis of polysaccharide content by infrared spectroscopy and to provide a theoretical basis for nondestructive testing of polysaccharide content in wolfberry fruit. An absorption peak of about 1600cm-1 was selected as characteristic absorption peak to set up a linearity or nonlinearity model. The result shows that the nonlinearity model, with a correlation coecient of 0.9952, had more nicety than that of the linearity model. It was feasible and eective to determine the polysaccharide content of wolfberry fruit by infrared spectroscopy based on nonlinear modeling.
