Evaluation of Quality of Rice Grains by Photoacoustic Imaging

Recently, quality evaluation and control has become increasingly important in biology and agriculture. The evaluation of the quality of food plants has been performed by many inspection methods. To date, the evaluation of the grain of crops by photoacoustic spectroscopy in the infrared region has on...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2005-06, Vol.44 (6S), p.4480
Main Authors: Suzuki, Manabu, Miyamoto, Katsuhiko, Hoshimiya, Tsutomu
Format: Article
Language:English
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Summary:Recently, quality evaluation and control has become increasingly important in biology and agriculture. The evaluation of the quality of food plants has been performed by many inspection methods. To date, the evaluation of the grain of crops by photoacoustic spectroscopy in the infrared region has only been performed for corn. We have developed a method of applying a photoacoustic microscope (PAM) to pollen analysis. In this study, a PAM was used to evaluate the quality of crop grains, rice in this case, for the first time. Due to differences in the absorption of the laser beam, the homogeneity of rice grains was measured and shown as thermal images. The resolution was sufficiently good to evaluate a single grain of rice. This method has an advantage in that it can be used to measure the existence of both the surface and back surface colored regions. In addition to conventional video image evaluation or the macroscopic optical absorption method, PA imaging can enable the evaluation of the quality and condition of rice grains.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.44.4480