Abstract
Rice grown in Yunnan Province is known for its excellent taste and consumer preference. However, the metabolite composition of this unique rice remains unclear. In this study, the metabolic profile of different rice planted in various producing regions was evaluated. A total of 1,005 metabolites were identified, including nucleotides and their derivatives, amino acids and their derivatives, alkaloids, organic acids, phenolic acids, lignans and coumarins, lipids, terpenoids, quinones, flavones, tannins, and others. Procucing region and varieties can be clearly distinguished on the PCA diagram. Differential metabolites accumulated in the MSD502 vs. MSR88 (138)/LHHG (234)/LHR88 (188) comparison groups. The results in this study provide scientific information for the origin tracing and variety differentiation of raw rice materials.