Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Isolation of Antioxidative Products and Evaluation of the Pancreatic Lipase Inhibitory Activity of (+)-Catechin via Thermal Treatment

(+)-Catechin 가열처리에 의한 항산화 활성물질 분리 및 pancreatic lipase 저해활성 평가

  • Son, Ah Young (Department of Cosmetic Pharmacology, Daegu Haany University) ;
  • Lee, Jin Tae (Department of Cosmetic Pharmacology, Daegu Haany University) ;
  • Kwon, O Jun (Daegyeong Institute for Regional Program Evaluation) ;
  • Kim, Taewan (Department of Food Science and Biotechnology, Andong National University) ;
  • Kim, Tae Hoon (Department of Herbal Medicinal Pharmacology, Daegu Haany University)
  • 손아영 (대구한의대학교 화장품약리학과) ;
  • 이진태 (대구한의대학교 화장품약리학과) ;
  • 권오준 (대경지역사업평가원) ;
  • 김태완 (안동대학교 식품생명공학과) ;
  • 김태훈 (대구한의대학교 한약재약리학과)
  • Received : 2013.02.14
  • Accepted : 2013.04.12
  • Published : 2013.04.30
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Abstract

Thermal processing of (+)-catechin was carried out at $121^{\circ}C$ for different reaction times (1, 2, 3, 6, and 12 h). The reacted products, compounds (1) and (2), were isolated and quantified via HPLC analysis. The antioxidant properties of processed (+)-catechin and its isolated compounds for different reaction time was measured via radical scavenging assays using DPPH and $ABTS^+$ radicals. Additionally, the anti-obesity efficacy of the thermal treated (+)-catechin was evaluated via porcine pancreatic lipase assay. The reacted (+)-catechin for 3 h had a slightly higher antioxidant capacity than that the parent (+)-catechin. Products 1 and 2, which were isolated from the reacted mixture during 3 h, showed an antioxidant capacity, and these two compounds may be responsible for the antioxidant capacity of processed (+)-catechin. Simple thermal treatment of (+)-catechin can be used to produce (+)-epicatechin (1) and protocatechuic acid (2) with enhanced antioxidant and anti-adipogenic effects.

(+)-Catechin을 $121^{\circ}C$에서 0, 1, 2, 3, 6, 12 h 동안 가열처리 하여 각각의 결과물에 대하여 DPPH 및 $ABTS^+$ radical 소거능 및 pancreatic lipase 저해활성을 평가하였다. DPPH 라디칼 소거능은 (+)-catechin의 3 h 가열결과물에서 가장 강한 활성인 $6.3{\pm}0.4{\mu}g/mL$의 $IC_{50}$값을 나타내었으며 6 h 가열결과물에서 $6.5{\pm}0.3{\mu}g/mL$의 $IC_{50}$ 값을 나타내었으며, 이들 활성은 (+)-catechin과 비교하였을 경우에도 높은 활성을 나타냄을 확인하였다. 또한 $ABTS^+$ 라디칼 소거능은 (+)-catechin의 3 h 가열결과물에서 가장 강한 활성인 $1.8{\pm}0.1{\mu}g/mL$의 $IC_{50}$값을 나타내었으며, 3 h 가열반응물로부터 분리한 화합물 중 화합물(1)과 화합물(2)가 이들 활성에 관여함을 시사하였다. 항비만 활성평가에 활용되고 있는 pancreatic lipase를 이용한 효능 평가에서 3 h 반응물의 $IC_{50}$값이 $377.1{\pm}11.1{\mu}g/mL$임을 확인하였고, 가열처리군별 HPLC 크로마토그램 및 상대함량으로 부터 (+)-catechin의 가열처리에 의해서 생성됨을 물질분리를 통해 구조결정한 (+)-epicatechin 및 protocatechuic acid 이외에 pancreatic lipase 저해활성을 나타내는 물질의 존재가 시사되었다. 향후 식품 및 음료에 광범위하게 존재하는 (+)-catechin의 가열조건에 따른 활성변화에 대한 보다 다양한 조건에서의 체계적인 연구가 필요하며 본 연구결과는 화합물의 구조변환을 통한 활성물질 개발을 위한 기초자료로 이용될 수 있을 뿐만 아니라 단일물질의 화학적 변화와 관련된 성분연구에 대한 기초자료로 활용가능하리라 사료된다.

Keywords

References

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