울금에 들어 있는 curcumin성분의 추출조건 확립 및 HPLC에 의한 최적 분석조건과 쓴맛성분 제거방법 등을 검토한 결과, 메탄올에서 흡수파장은 424 nm 부근에서 최대흡광도를 보였으며, HPLC의 최적 분석조건은 UV 424nm에서 Zorbax eclipse column을 사용하여 분석할 경우, 이동상은 75% MeOH, 유속 0.8 mL/min에서 가장 좋은 분리 결과를 보였다. Curcumin 성분은 메탄올추출물이 가장 높은 함유량을

Extracting and analytical conditions of curcumin, and removal of bitterness substance from Curcuma longa L. were investigated. Absorption maxima was shown to be 424 nm at methanol solvent. Optimal conditions for analysis of curcumin was Zorbax eclipse column ; mobile phase, 75% MeOH ; flow rate, 0.8 mL/min ; wave length, UV 424 nm. Curcumin component was analyzed to be the highest content in methanol extract. In all samples, extraction yield by heating was shown to be effective as compared to room temperature. Curcumin contents of methanol and ethanol extracts in extraction of room temperature were 14.4 and 14.2 times higher than that of water extract, respectively. Two hot solvent extracts has a high curcumin content being 150 mg% as compared to room temperature. Extracting time was an effective condition when it was extracted for 60 minutes for elevating the curcumin content of water and methanol extracts. Bitter substance (BS) was markedly decreased in water extract by heat treatment of above . BS was weak in treatment than in room temperature and it was however strong in treatment. RT and heat treatment were not different in BS intensity.

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