Nuclear magnetic resonance spectroscopy method for identifying ultrahigh-temperature sterilized milk and reconstituted milk

The invention provides a nuclear magnetic resonance spectroscopy method for identifying ultrahigh-temperature sterilized milk and reconstituted milk. The nuclear magnetic resonance spectroscopy methodcomprises the steps: 1) respectively detecting milk samples of the reconstituted milk and the ultrahigh-temperature sterilized milk prepared from whole milk powder by using a nuclear magnetic resonance spectroscopy, and integrating peak area at each chemical shift position; 2) analyzing a principal component of a relative integral result, establishing a partial least square variance analysis model, and determining a characterization factor capable of completely classifying the two milks; and 3) establishing a partial least square variance discriminant analysis model for identifying the ultrahigh-temperature sterilized milk and the reconstituted milk based on the determined characterization factor. By using the method provided by the invention, a nuclear magnetic resonance spectrometer isadopted for measurement, a