“Ukon,” turmeric, is a perennial plant belonging to the family Zingiberaceae and used as a natural medicine, which is one of the typical Kampo medicines. Turmeric is mainly grown in Okinawa, Tanegashima, Ishigakijima, Yakushima islands, and Kagoshima prefecture in Japan. Among them, Okinawa island has the largest production of the turmeric. Turmeric is a subtropical plant and plenty of solar energy and enriched soil are essential for its growth. Therefore, the climate and environment of Okinawa island play important roles in raising high-medicinal quality turmeric which is used for our product.
In Okinawa island, turmeric has been called “Uchin,” and its trade was restricted through the government monopoly during the Ryukyu dynasty era due to the high-medicinal effects. The medicinal properties of turmeric include curcumin and other enriched ingredients, which make Japan Gold Turmeric have high-medicinal effects. Although turmeric-based products become popular now, its medicinal effects of turmeric have been widely known since the Edo-era, and approximately 1,000 medicinal ingredients have been identified.
In the Chinese antiquarian book, “Queen Himiko at Yamataikoku presented turmeric to the King of China” was recorded. In the Edo era, the 8th Shogun Yoshimune Tokugawa certified medicinal effects of turmeric and encouraged farmers to grow. The culture of turmeric was successful and grown popular within Japan. Furthermore, in the mid-Edo period, Rangakui, Gen-nai Hiraga, who learned western medicine in Dutch language, introduced turmeric as a good plant for health and beauty in his natural history book, "Butsurui Hinshitsu," and turmeric became popular among people.