Tannin을 다량 함유하고 있는 도토리(Quercus acutissima CARRUTHERS)는 천연 항산화제 및 다양한 기능성을 가진 가공식품으로의 개발가치가 있다고 생각된다. 이에 따라 도토리 항산화 기능물질의 일종인 polyphenol류와 gallic acid의 추출조건을 반응표면분석법을 이용하여 조사하였다. Polyphenol 화합물의 함량은 추출온도 및 추출시간 hr, 용매비 mL/g로 하여 중심합성계획법으로 16개의 구간에서 측정

The Acorn (Quercus acutissima CARRUTHERS), which contains a large quantity of tannin, should be developed as a processed food as the acorn is rich in natural antioxidants and other valuable components. Accordingly, acorn extraction conditions for polyphenol and gallic acid (both antioxidants) were investigated by response surface methodology. The content of polyphenols were determined under 16 different extraction conditions based upon a central composite design. The parameters varied over of extraction temperature, 1-5 h of extraction time, and 5-25 mL/g of solvent ratio, Gallic acid extraction was optimal at extraction temperature, 1-5 h of extraction time, and 5-25 mL/g of solvent ratio, Epicatechin content was highest at , 4.16 hand 22.38 mL/g. Catechin content was highest at , 2h and 23.59 mL/g. The maximum catechin content was . Epigallocatechin content was influenced by extraction temperature and time. The maximum epigallocatechin content was at , 4.17h, and 9.25 mL/g. The maximum value of epicatechingallate content was at , 3.04h, and 24.93mL/g. Epigallocatechingallate content was influenced principally by solvent ratio and the maximum content was at , 2.96h, and 24.95mL/g. The total polyphenol content was maximal at , after extraction at , 4.24h, at 9.71mL/g. The higher the extraction temperature and the longer the extraction time, the greater the polyphenol content. Gallic acid content was highest, the maximal level was after , 1.65h at 17.17 mL/g, and this was influenced principally by extraction time and solvent ratio.

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