Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Comparison of the antioxidant activities of small-black-bean-Chungkukjang-added black food and soybean Chungkukjang extracts

블랙푸드 첨가에 따른 약콩 청국장 및 대두청국장의 항산화 활성 비교

  • Park, Hyun-Sook (Department of Food Nutrition and Culinary Arts, Daegu Technical University) ;
  • Shin, Seung-Ryeul (Faculty of Herbal Food Cuisine and Nutrition, Daegu Haany University) ;
  • Hong, Ju-Yeon (Faculty of Herbal Food Cuisine and Nutrition, Daegu Haany University) ;
  • Yang, Kyung-Mi (Faculty of Herbal Food Cuisine and Nutrition, Daegu Haany University)
  • 박현숙 (대구공업대학 호텔외식조리계열) ;
  • 신승렬 (대구한의대학교 한방식품조리영양학부) ;
  • 홍주연 (대구한의대학교 한방식품조리영양학부) ;
  • 양경미 (대구한의대학교 한방식품조리영양학부)
  • Received : 2013.06.25
  • Accepted : 2013.10.22
  • Published : 2013.10.30
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Abstract

This study was conducted to analyze the polyphenol contents and antioxidant activities of small-black-bean-Chungkukjang-added black food (SBCB) and soybean Chungkukjang (SC) extracts for the development of functional materials. The yields of the hot-water-and-ethanol SC extracts were higher than those of the hot-water-only SC extracts, which were higher than those of the ethanol-only SC extracts. The total phenol contents of the hot-water-and-ethanol SBCB extracts were higher than those of the other extracts. The EDA values of the hot-water-and-ethanol SBCB extracts were higher in the 0.625~5.0 mL/mL extract concentration than those of the other extracts, and those of the SC extracts were high in the 10 mg/mL extract concentration. The SOD-like activities of the hot-water- and ethanol-only SC extracts were higher than those of the other extracts. The nitrite scavenging ability of the ethanol-only SC extracts was higher at pH 1.2 than that of the hot-water-only SC extracts. The xanthine oxidase inhibitory activities of the hot-water- and ethanol-only SBCB extracts were higher in the 0.625 mL/mL extract concentration than those of the other extracts, and increased along with the extract concentration. The inhibitory activities of tyrosinase also increased along with the extract concentration, and the reducing power increased along with the extract concentration and was high in the hot-water-only SBCB and SC extracts.

본 연구는 대두청국장, 약콩청국장, 그리고 약콩청국장에 흑미, 흑임자, 다시마와 같은 블랙푸드 분말을 첨가한 약콩청국장의 열수 및 에탄올 추출물에 대한 항산화 활성을 평가함으로서 청국장과 블랙푸드의 식품학적인 가치를 평가하고자 한다. 열수 및 에탄올 추출물의 수율은 대두청국장 추출물에서 높았으며, 열수 추출물이 에탄올 추출물보다 수율이 높았다. 총 폴리페놀 함량은 열수 및 에탄올 추출물에서 각각 약콩청국장, 블랙푸드 첨가 약콩청국장 추출물에서 높았다. 에탄올 추출물의 폴리페놀 함량이 열수 추출물에 비해 높았다. 블랙푸드 첨가한 약콩청국장 열수 및 에탄올 추출물의 전자공여능은 0.625~5.0 mg/mL의 농도에서는 다른 추출물에 비해 높았으나 10 mg/mL의 농도에서는 대두청국장 추출물의 전자공여능이 높았다. SOD 유사활성능은 대두청국장의 열수 및 에탄올 추출물에서 다른 추출물에 비해 높았다. pH 1.2에서의 아질산염 소거능은 pH 3.0일 때 보다 높았고, 열수 추출물에 비해 에탄올 추출물에서 아질산염 소거능이 높았다. Xanthine oxidase 저해활성은 각 추출물의 농도가 증가함에 따라 증가하였으며, 열수 및 에탄올 추출물 0.625 mg/mL의 농도에서는 블랙푸드 첨가 약콩청국장 추출물이 다른 추출물에 비해 높은 저해활성을 보였다. 대두청국장의 에탄올 추출물의 tyrosinase 저해활성은 농도가 증가함에 따라 높은 저해활성을 보였다. 환원력은 열수 및 에탄올 추출물에서 농도에 따라 증가하였고, 블랙푸드 첨가 약콩청국장과 대두청국장 추출물에서 높았다.

Keywords

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