Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Screening of Physiological Functionality for Unmarketable Browned Oak Mushroom (Lentinus edodes)

시장성이 없는 갈변 표고버섯 (Lentinus edodes) 추출물의 생리활성 검정

  • Kang, Mi-Young (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Kim, Sul-Yi (Department of Biological Science, Ajou University) ;
  • Yun, Hye-Jung (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Nam, Seok-Hyun (Department of Biological Science, Ajou University)
  • Published : 2004.12.31
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Abstract

For industrial application to manufacturing functional foods for health using browned oak mushroom, we examined its reducing power, inhibitory effect on intracellular reactive oxygen species, phenolic compounds and phytates contents, modulatory effects on NO radical and matrix metalloproteinase 9 (MMP9) generation by activated macrophages, and antimutagenicity in order to evaluate the functionality of browned oak mushroom for health. While overall ethanolic extracts have higher reducing power than aqueous extracts, browning reaction was found to increase reducing power by up to 28% at a 3.32 mg/ml sample concentration. Browning reaction also increased phenolic compound content by about 73% compared to raw mushroom. However, any significant change in phytate content could not be detected. At a concentration of $100\;{\mu}g/ml$, treatment of ethanolic extract of oak mushroom increased NO generation over 43% in LPS-stimulated macrophage. On the contrary, the aqueous extracts rather decreased it over 17% at the same sample dose. However, any solvent extract from browned oak mushroom seems not to cause any change in both NO production and MMP9 activity. In addition, browning reaction did not allow any significant change in suppressive effect on mitomycin C-induced mutagenesis as examined with SOS chromotest. These results suggest a possible use of browned oak mushroom with unmarketable quality as a material for development of a variety of processed functional foods for health.

갈변표고버섯을 건강기능성 식품산업의 소재로 활용할 수 있는 가능성을 탐색하기 위하여 환원력과 세포 내 활성산소종에 대한 억제효과, 페놀화합물 및 피틴산의 함량, 대식세포의 NO 라디칼과 matrix metalloproteinase9(MMP9) 생성에 대한 제어작용 및 항변이원성을 생리활성의 지표로 갈변반응이 건강기능성에 미치는 영향을 평가하였다. 실험 결과, 에탄올추출물의 환원력이 열수추출물보다 전반적으로 우수하였으며 3.32 mg/ml 농도에서 갈변반응은 표고버섯의 환원력이 28%까지 증가시켰다. 갈변과정에서 페놀화합물의 함량은 생표고버섯에 비하여 73%정도 증가된 반면, 피틴산의 함량에 유의한 변화는 일어나지 않았다. 표고버섯 에탄올추출물의 처리는 $100\;{\mu}g/ml$의 시료농도에서 LPS 자극에 의한 대식세포의 NO 생성을 43% 이상 증진시킨 반면 열수추출물은 오히려 17%이상 억제시키는 것으로 나타났으나, 갈변반응이 용매별 추출분획의 NO 및 MMP9의 생성을 제어하는 경향에 변화를 일으키니 않았다. 또한 SOS chromotest를 이용한 항돌연변이 활성의 측정 결과도 mitomycin C가 유발한 돌변변이에 대한 표고버섯 추출물의 억제효과에 갈변반응이 큰 영향을 주지 않았다. 이상의 실험 결과는 상품성을 상실한 갈변표고버섯도 다양한 건강기능성 가공식품의 개발을 위한 원자재로 소비될 수 있음을 시사한다.

Keywords

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