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Gambier or gambir is an extract derived from the leaves of ''Uncaria gambir'', a climbing shrub native to tropical Southeast Asia. Gambier is produced in Indonesia and Malaysia where it was an important trade item into the late nineteenth century. It can be used as a tanning agent, a brown dye〔 ,〔 a food additive 〔 and as herbal medicine. Also known as pale catechu,〔 white catechu or Japan Earth,〔 it is often confused with other forms of catechu. ==History== Gambier production began as a traditional occupation in the Malay archipelgo. By the middle of the seventeenth century, it was established in Sumatra and in the western parts of Java and the Malay peninsula. It was initially used as medicine and chewed with betel. Local Chinese also began to use gambier to tan hides. Chinese first got involved in gambier production at Riau, using coolie labor and growing black pepper as a supplemental crop. Bugis merchants traded the gambier for rice from Java and Siam, helping the Bugis to become an important regional power in the late eighteenth century.〔 When the British settlement of Singapore was founded in 1819, about 20 gambier plantations had already been started in the area by Chinese. The peak of Singapore's gambier trade was in the 1830s through 1850s, driven by demand from the British dyeing and leather tanning industries.〔 Diplomat Edmund Roberts noted that upon his visit to China in the 1830s, Chinese were using it for tanning, and noted that the ''uncaria gambir'' made "leather porous and rotten." He also noted that the Chinese would chew it with areca nut.〔 In the 1860s through 1880s, gambier production was expanded in nearby Johor under the kangchu system.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gambier (extract)」の詳細全文を読む スポンサード リンク
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