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Poster Presentations
Day 2, June 23（Mon.）
Room P (Maesato East, Foyer, Ocean Wing)
- 2P-AM-36
Analysis of Hydrophilic Metabolites in Rice from Different Production Areas
(Shimadzu)
oYutaka Umakoshi, Hitomi Tsujihata, Nanami Sakashita, Yuki Sakamoto
Rice is one of the representative grains and an important energy source for humanity. Rice is primarily composed of carbohydrates and proteins, and is known to contain metabolites such as lipids, amino acids, organic acids, nucleobases, and various secondary metabolites. The metabolites in rice are thought to have a significant impact on taste and functionality; however, the differences in metabolites by production area have not been extensively studied.
In this presentation, we measured the differences in metabolites in rice of the Koshihikari variety cultivated in eight locations. A liquid chromatograph–quadrupole mass spectrometer system was used to perform targeted analysis in MRM mode. As a result, a total of about 50 hydrophilic metabolites, including amino acids, organic acids, and nucleobases, were detected. We performed principal component analysis (PCA) using the area value data after IS correction with eMSTAT Solution. The score plot confirmed that the samples could be classified by cultivation location. Separation between rice from the Hokuriku area and other regions was confirmed along the PC2 axis. In the loading plot, monosaccharides and disaccharides were spotted at opposite positions, suggesting that the sugar profiles differ by production area.