Methanolic extracts from eighteen turmerics (Curcuma longa L.) grown in Jeju island, Korea were analyzed for curcuminoids content by HPLC. 0.5 g of turmeric samples were extracted with 20mL of methanol for 7hrs by shaking and were sonicated for 30 mins. The extracts were analyzed by HPLC-DAD using Brownlee SPP C18 column (4.6 x 100 mm, 2.7�m) after filtration. Curcumin(CUR), demethoxycurcumin (DEM), bisdemethoxycurcumin (BIS) were monitored at the wavelength of 420 nm. K145023 variety contains the highest curcuminoids and variety number 10 contains the least amount. Total curcuminoids in tumeric ranged from 53.9� 1.0 to 5,396.0 � 101.8 �g/g dry turmeric weight. In decreasing order, curcuminoids found were CUR (4,669.7 �g/g) > DEM (565.3 �g/g) > BIS (160.9 �g/g). 5 varieties contain cucuminoid less than 468 �g/g but other varieties contain higher than 3,575.5 �g/g. The results showed that the variety of turmeric could be divided two groups depending on their curcuminoid contents.

Level of curcuminoid content in turmeric (<i>Curcuma longa</i> L.) grown in Korea

248th National Meeting (2014)

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Level of curcuminoid content in turmeric (Curcuma longa L.) grown in Korea