Bioactive Component Content as Affected by Different Drying Condition in Peony (Paeonia lactiflora Pall.) Root

건조처리 조건에 따른 작약근 생리활성 성분 함량 변화

  • 정명근 (농촌진흥청 영남농업시험장) ;
  • 안영남 (영남대학교 자연자원대학) ;
  • 강광희 (영남대학교 자연자원대학) ;
  • 김재현 (농촌진흥청 영남농업시험장)
  • Published : 2002.12.01

Abstract

This experiment was conducted to know the changes of bioactive component content in four-year-old peony (Paeonia lactiflora Pall.) root with various drying methods such as room temperature drying, $50^{\circ}C$ heat-air drying, room temperature drying after $80^{\circ}C$ boiling water treatment and freeze drying, and to establish the optimum drying method for high quality production of Paeoniae Radix. For this purpose, the contents of paeoniflorin, albiflorin and five phenolic compounds (gallic acid, benzoic acid, (+)-catechin, (-)-epicatechin and (+)-taxifolin 3-O-$\beta$-D-glucopyranoside) in peony root with different drying methods were analyzed by RP-HPLC. The contents of paeoniflorin, albiflorin and (+)-taxifolin 3-O-$\beta$-D-glucopyranoside at room temperature drying were higher than in the other drying methods and that of gallic acid at 8$0^{\circ}C$ boiling water treatment was the highest among that of all drying methods. In the case of freeze drying, the contents of (+)-catechin, benzoic acid and (-)-epicatechin were the highest among those of all drying methods. As increase of drying and treatment temperature, the contents of paeoniflorin, albiflorin, (+)-taxifolin 3-O-$\beta$-D-glucopyrano-side, (+)-catechin and benzoic acid were decreased.

작약근이 수확되어 적절한 조제과정을 거쳐 약품으로서의 생약재 작약이 가공되는 과정 중 약성을 가장 크게 변화시키는 수치 및 건조방법의 차이가 작약근 함유 생리활성 성분의 함량변화에 미치는 영향을 조사하기 위하여 4년생 의성작약의 뿌리를 이용하여 코르크층을 제거한 거피근과 코르크층을 제거하지 않은 유피근으로 가공하고, 유피근, 거피근 모두 상온 음건, $50^{\circ}C$ 화력건조, 수증건법 및 동결건조 방법으로 건조한 후 이들에 함유된 작약근 생리활성 성분의 함량을 검토한 결과를 요약하면 다음과 같다. 1. 건조방법의 차이에 따른 paeoniflorin, albiflorin 및 (+)-taxifolin 3-O-$\beta$-D-glucopyranos의 함량은 상온 음건 조건의 건조법에서 가장 높은 양상을 나타내었고, 동결건조가 가장 낮은 함량을 나타내었다. 2. 건조방법에 따른 유피근과 거피근간의 paeoniflorin, albiflorin, (+)-taxifolin 3-O-$\beta$-D-glucopyranoside의 함량을 비교할 때 상온 음건을 제외한 모든 건조법에서 거피근의 함량이 더 높은 양상을 나타내었다. 3. gallic acid의 함량은 유.거피근 모두 $80^{\circ}C$ 수증건법이 가장 높은 함량을 나타내었고, 동결건조법이 가장 낮은 양상을 나타내었다. 4. benzoic acid의 함량은 gallic acid와 상반된 양상을 나타내어 동결건조법이 유.거피근 모두 가장 높았고, $80^{\circ}C$ 수증건법이 가장 낮은 양상을 나타내었다. 5. 건조방법에 따른 (+)-catechin 및 (-)-epicatech고 함량은 동결건조법이 다른 건조법보다 높은 양상을 나타내었다. 6. paeoniflorin, albiflorin, (+)-taxifolin 3-O--$\beta$-D-glucopyranoside, (+)-catechin 및 benzoic acid의 함량은 건조 및 처리 온도가 증가할 수록 감소하는 양상을 나타내었다.

Keywords

References

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