Turmeric (Latin name: Curcuma longa L.), also known as Yujin, Baodingxiang, Madian, Huangjiang, etc, is a member of ginger family. Its root is strong and thick, leaves are oblong or elliptic, corolla is slight yellow, the flowering period is in August. it can be found in China’ s provinces, such as Taiwan, Fujian, Guangdong, Guangxi, Yunnan, and Tibet, and in East and South-east Asia.