Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Antioxidant and digestive enzyme inhibitory effects of Eisenia bicyclis extracted by different methods

추출방법에 따른 대황 추출물의 항산화 및 소화효소 저해 효과

  • Kim, Jin-Hak (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Park, La Young (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Lee, Shin-Ho (Department of Food Science and Technology, Catholic University of Daegu)
  • 김진학 (대구가톨릭대학교 식품가공학과) ;
  • 박나영 (대구가톨릭대학교 식품가공학과) ;
  • 이신호 (대구가톨릭대학교 식품가공학과)
  • Received : 2015.10.17
  • Accepted : 2015.12.09
  • Published : 2016.02.28
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Abstract

The antioxidant and digestive enzyme inhibitory effects of Eisenia bicyclis extracted by various extraction methods (RE, reflux extraction; SE, ultrasonification extraction; AE, autoclave extraction; LE, low-temperature high-pressure extraction) were investigated. The extraction yield (55.21%) and the laminarin (39.03%), fucoidan (24.75%), total polyphenol (115.68 mg GAE/g) and flavonoid (36.67 mg RHE/g) contents of AE were higher than those in other methods. The DPPH radical (86.60%, 500 mg%), ABTS radical (58.56%, 25 mg%), nitrite (86.38%, 100 mg%) scavenging activities of the Eisenia bicyclis extracted by AE were higher than those of Eisenia bicyclis extracted by other methods. The ABTS radical and nitrite scavenging activities were above 98% in all tested Eisenia bicyclis extracts and these activities were dependent on its concentration. The inhibitory effects of AE against amylase (50 mg%) and ${\alpha}$-glucosidase (5 mg%) were 64.76% and 86.71%, respectively. The AE showed the best inhibitory effect of Eisenia bicyclis extracts (50 mg%) against trypsin (24.37%) and ${\alpha}$-chymotrypsin (49.05%), respectively. These results suggest that Eisenia bicyclis extracted by AE can be used as a bioactive and functional material in the food industry.

미역과에 속하는 대황 물 추출물의 항산화활성과 탄수화물 및 단백질 소화효소 저해능을 추출방법을 달리하여 비교 검토하였다. 환류냉각추출물(RE), 초음파추출물(SE), 고온가압추출물(AE), 저온고압추출물(LE)의 수율과 주요 성분함량은 AE, RE, SE, LE 순으로 높았다. 고온가압추출물(AE)의 수율, 라미나린, 후코이단, 폴리페놀, 플라보노이드 함량은 각각 55.21%, 39.03%, 24.75%, 115.68 mg GAE/g, 36.67 mg RHE/g을 나타내었다. DPPH radical 소거능 모든 시료에서 농도 의존적으로 증가하였으며, 500 mg% 농도에서 AE(86.60%), RE(83.09%), SE(84.41%), LE(80.45%) 순이었다. ABTS radical 소거능은 50 mg% 농도에서 모두 98% 이상의 높은 활성을 나타내었다. 아질산염 소거능은 모든 실험군에서 농도 의존적으로 증가하였고 AE, RE, SE, LE 순으로 높았으며, 500 mg% 농도에서 추출방법에 관계없이 98% 이상의 높은 활성을 나타내었다. 탄수화물 소화효소 중 amylase 저해 효과는 50 mg% 농도에서 AE(64.76%), RE(58.57%), SE(54.76%), LE(45.48%)순으로 나타났으며, ${\alpha}$-glucosidase 저해효과는 5 mg% 농도에서 AE(86.71%), RE(81.87%), SE(75.21%), LE(72.65%) 순으로 나타났다. 단백질 분해 효소 중 trypsin 저해 효과는 50 mg% 농도에서 AE(24.37%), RE(22.76%), SE(19.97%), LE(15.95%)순으로 나타났으며, ${\alpha}$-Chymotrypsin 저해효과는 50 mg% 농도에서 AE(49.05%), RE(43.60%), SE(40.63%), LE(38.10%) 순이었으며, 대황 추출방법은 $121^{\circ}C$에서 15분간 열처리하는 고온가압 추출방법이 가장 양호하였다.

Keywords

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