식용유지에 대한 고구마 추출물의 항산화능을 검토하기 위하여 linoleic acid와 돈지에 70% methanol 고구마 추출물을 가하여 에서 저장하면서 POV를 측정하여 항산화능을 비교하였으며, 고구마 항산화 성분을 추출하여 HPLC를 이용하여 정성, 정량하여 다음과 같은 결과를 얻었다. 70% methanol 고구마 추출물의 항산화능은 목포18이 율미보다, 껍질부위가 속부위보다 강한 항산화활성을 나타내었다. 고구마 페놀화합물 3개 분획 중

A supercritical fluid extraction was performed for the extraction of phenolics from grape seeds which up to now have been discarded. The optimum condition for extraction process was predicted through response surface methodology using central composit experimental design. The extraction amount of grape seed phenolics was increased by increasing extraction temperature, pressure, and concentration of co-solvent (ethanol). The optimum extraction conditions were 84.83C, 51.50MPa and 1.27% ethanol. The yield of phenolics using SFE was higher with 3 folds than ethanol and 4 folds than hexane but less than 80% methanol. In the respects of food poisoning, the approved solvents were restricted to ethanol and hexane. So, SFE for extraction of phenolics could be powerful alternative method for solvent extraction.