ldentification of rice varieties specialties in Vietnam using Raman spectroscopy

Abstract

The characteristics and quality of rice are significantly affected by its variety. However, discrimination between varieties is an urgent but difficult and time-consuming effort in Vietnam. In this study, an effective and reliable identification method was established by Raman spectroscopy (RS). Total Raman spectra of 32 rice samples were acquired from 400 to 1600 cm⁻¹ and the sensitive fundamental vibrations of less polar groups and bonds in rice were analyzed. Initially, the raw Raman spectra were processed by standard normal variety (SNV) combined with Savitzky Golay (SG) smoothing algorithm.