Red Color of Shuri Castle’s Seiden was Derived from Bacteria, Investigation will Continue
February 25, 2022 Ryukyu Shimpo
By Chie Tome
The fifth meeting of the painting and engraving working group within the national technical exploratory committee for reconstruction of Shuri Castle was held on February 24 in Naha. The working group reported that they have found that Kushi bengala, the red iron oxide pigment responsible for the Seiden’s characteristic red color, is derived from iron-oxidizing bacteria found near the water in Kushi (Nago). The team is investigating the appropriate shade and fineness.
During the last reconstruction, the pigment was not used because its nature could not be determined. This time, the working group is increasing the durability and carrying out experiments with the goal of actually using the pigment.
(English translation by T&CT and Ellen Huntley)
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