Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Biological Compounds Extracted from Codium fragile by Enzymatic Hydrolysis and Their Biological Activities

효소적 가수분해를 이용한 청각으로부터 생리활성 물질의 추출 및 가수분해물의 생리활성

  • Lee, Ka-Hwa (School of Food Technology and Nutrition, Chonnam National University) ;
  • Senevirathne, Mahinda (School of Food Technology and Nutrition, Chonnam National University) ;
  • Ahn, Chang-Bum (School of Food Technology and Nutrition, Chonnam National University) ;
  • Je, Jae-Young (School of Food Technology and Nutrition, Chonnam National University)
  • 이가화 (전남대학교 식품공학.영양학부) ;
  • ;
  • 안창범 (전남대학교 식품공학.영양학부) ;
  • 제재영 (전남대학교 식품공학.영양학부)
  • Received : 2010.03.15
  • Accepted : 2010.04.27
  • Published : 2010.07.31
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Abstract

We extracted bioactive materials from Codium fragile by enzymatic hydrolysis using four different proteases (Alcalase, Flavourzyme, Neutrase, and Protamex) and seven different carbohydrases (amyloglucosidase (AMG), Celluclast, Dextrozyme, Maltogenase, Promozyme, Termamyl, and Viscozyme), and evaluated their biological activities such as antioxidant, anti-acetylcholinesterase (AChE), and anti-inflammatory effects. All enzymatic hydrolysates showed good DPPH radical scavenging capacities, in particular, Flavourzyme and Promozyme hydrolysates possessed the highest activity. The two hydrolysates also exhibited strong hydrogen peroxide scavenging activity, $Fe^{2+}$ chelating activity, and reducing power in a dose-dependent manner. Furthermore, the two hydrolysates effectively protected DNA damage induced by hydroxyl radical by measuring the conversion of supercoiled DNA to the open circular DNA. All enzymatic hydrolysates also showed high anti-AChE inhibitory activities in a dose-dependent manner, and did not showed any significant cytotoxicity on RAW264.7 cells (p<0.05). In addition, the enzymatic hydrolysates significantly (p<0.05) inhibited lipopolysaccharide induced-nitric oxide production on RAW264.7 cells. These results suggest that the enzymatic extracts from Codium fragile would be good source as an ingredient of functional foods.

본 연구에서는 청각으로부터 생리활성물질을 추출하기 위해서 친환경적인 효소적 방법을 이용하여, 이들 효소 가수 분해물의 TPC, TFC, 항산화 활성, acetylcholinesterase(AChE) 저해 활성 및 항염증 활성을 측정하였다. 청각의 단백질 및 탄수화물 가수분해물의 TPC는 TFC보다 높은 함량을 나타내었으며, 단백질 가수분해물이 탄수화물 가수분해물보다 높은 TPC를 나타내었다. 청각 가수분해물의 항산화 활성은 DPPH radical 소거 활성으로 측정하였고, 단백질 가수분해물에서는 Flavourzyme 가수분해물이 활성이 높았고, 탄수화물 가수분해물에서는 Promozyme 가수분해물이 높은 DPPH radical 소거 활성을 나타내었다. 따라서 두가지 가수분해물을 이용하여 hydrogen peroxide 소거능, $Fe^{2+}$ 킬레이팅 및 reducing power를 측정한 결과 두 가수분해물 모두 우수한 항산화 활성을 나타냄을 알 수 있었다. 또한, hydroxyl radical로 유도된 DNA 손상을 효과적으로 억제하였다. AChE 저해 활성에서는 Flavourzyme 및 Dextrozyme 가수분해물이 각각 우수한 AChE 저해 활성을 나타내었다. 청각 가수분해물의 RAW264.7 세포주에 대한 세포독성을 검토한 결과 세포독성을 나타내지 않았으며, lipopolysaccharide(LPS)로 유도된 nitric oxide(NO) 생성 억제능에서는 모든 가수분해물이 유의적(p<0.05)으로 NO의 생성을 억제하였다.

Keywords

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