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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Physiological Activities of Extracts from Different Parts of Cudrania tricuspidata

꾸지뽕나무 부위별 추출물의 생리활성 탐색

  • Received : 2011.05.19
  • Accepted : 2011.06.07
  • Published : 2011.07.31
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Abstract

The physiological activities of extracts from the leaf, stem, and fruit of Cudrania tricuspidata were investigated. The electron-donating ability (EDA) of the 70% (v/v) ethanolic extract of stem was 90.20%; this was the highest value of all the extracts tested and higher than the L-ascorbate solutions. The total polyphenol contents were the highest in the leaf extracts under all extraction conditions. Especially, 70% (v/v) methanolic extract of leaf contained the highest total polyphenol content of 224.48 mg%. SOD-like activity showed the highest activity in water extract of leaf at 64.53%. Tyrosinase-inhibitory activities were the most effective in all extracts of fruit. ACE inhibitory activities were the highest in water extract of fruit. Nitrite-scavenging abilities under acidic conditions (pH 1.2 and pH 3.0) were the most effective in all the extracts. The results of this study will be useful for understanding the physiological activities of Cudrania tricuspidata extracts.

꾸지뽕나무를 잎, 줄기, 열매로 부위별 추출조건에 따른 추출물의 생리활성을 알아보고자 전자공여작용, 총 폴리페놀 함량, SOD 유사활성, tyrosinase 저해 효과, 아질산염 소거작용 및 ACE 저해 활성을 측정하였다. 전자공여능의 경우 추출용매에 따라 70% 에탄올>70% 메탄올>물 추출물순으로 활성을 나타냈으며, 특히 줄기의 70% 에탄올 추출물이 90.20%로 가장 높았다(p<0.05). 이는 비교물질인 Lascorbate의 활성보다 높은 수치였다. 총 폴리페놀 함량 측정 결과 모든 추출조건에서 잎 추출물이 가장 많은 폴리페놀을 함유하고 있었다(p<0.05). 또한 추출용매에 따라 70% 메탄올 추출물들이 폴리페놀을 많이 포함하고 있음을 알 수 있었다. SOD 유사활성은 잎의 물 추출물이 64.54%로 가장 높은 활성을 나타냈다(p<0.05). Tyrosinase 저해효과에서는 열매 추출물이 가장 높은 저해능을 보였다. 아질산염 소거능은 모든 추출물이 산성조건에서 소거능이 높게 나타났고, 추출조건과 상관없이 잎 추출물의 소거능이 가장 높은 것으로 분석되었다. ACE 저해 활성은 열매 물 추출물에서 85.14%의 활성을 가장 높은 경향을 보였다. 꾸지뽕 나무의 부위 및 용매에 따라 각각 활성이 다르게 나타났다. 이러한 결과를 토대로 활성이 다소 뛰어난 잎의 경우, 일상에서도 쉽게 구할 수 있어 일반인들이 식용으로 이용하기 용이하므로 차와 음료 등의 건강 음료개발을 통해 소비를 활성화할 수 있다. 그 외 줄기, 열매 등도 잎과 함께 이를 이용한 환, 캡슐 등의 다양한 기능성식품으로의 개발 가능성을 확인하였다.

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