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Rice Evalution
The degree of rice freshness was evaluated as the
first example of the application. Three grains of rice taken at different harvest
times were placed on the agar film formed on the sensor. pH values of a 7 mm by
17 mm region under the pieces of rice were obtained at 100µm intervals after 5
minutes. The resulting pH values are depicted so that the neutral pH region is
blue and the acidic region is red. We confirmed that the pH of the lower pH region
corresponded to the harvest time of the rice. The surface of rice is known to
become acidified as it grows older. Therefore, this pH image can be said to visualize
the freshness of the grains of rice. Evaluation of rice grain is typical Japanese
or Asian idea, however, this example can thought to be applied to evaluation of
various grains such as wheat. This result indicates that food science study is
one of the possible applications of this example. |
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![[genre_e]](../image/t_title.jpg){kind=small}
