Measurement of MIR characteristics of rice in storage using by FT-IR/ATR spectroscopy

The purpose of this work was to investigate the change of MIR characteristics of rice in storage using FT-IR/ATR spectroscopy. Firstly, grain number in the FT-IR/ATR measurement was examined to obtain the average spectral information of rice grain. In the experiment, measurement of 300 grains was performed and its spectrums were analyzed. As a result, it is shown that the average spectrum of rice grain is acquired by measuring beyond 60 grains. Next, MIR spectrums of white and brown rice and rice bran at different days of storage were acquired and analyzed. As a result, it was found that absorption bands occurred by the storage were around 1710 cm −1 and 1560–1532 cm −1 . This result shows the possibility of qualitatively grasping the changes of rice components during storage using MIR spectroscopy.