Mycelial Growth Using the Natural Product and Angiotensin Converting Enzyme Inhibition Activity of Pleurotus eryngii

To develop the health/functional food materials, we investigated the cultural condition of mycelial growth on the solid state fermentation using the brown rise, Acanthopanax sp. and Artemisia sp., and also evaluated inhibitory activity of angiotensin converting enzyme (ACE) of hot water extracts from cultured media of Pleurotus eryngii. As the amount of Acanthopanax nnd Artemisia In the cultural media increased, the mycelial growth rate decreased. Especially, addition of Aeantopanax showed marked effect than Artemisia. Moisture contents in three kinds of cultured media were in the range of $10.9{\sim}12.0%$. Crude protein fat and crude fiber content were the highest value in cultured brown rice medium, whereas the mineral contents (Ca, K and P) were higher in the Acanthopanax supplemented (5%) medium than the other media, The extraction yield of the Artemisia supplemented (5%) medium was the highest value of 4.80%, and the pH of hot water extract from cultured brown rice medium showed the lowest value of 6.1. Lightness (L) values in three kinds of extracts from cultured media were in the range of $85.8{\sim}87.1$. Redness (a) value was the highest In the brown rice and Acanthopanax supplemented media, however cultured Artemisia supplemented medium showed the highest value in yellowness (b). In comparison of sugar components analyzed by the thin layer chromatography with three kinds of samples, two spots were detected to be glucose and maltose, respectively. The ACE inhibitory activity of hot water extract from the cultured Acanthopanax supplemented medium showed the highest value at the concentration of $0.2{\sim}1.0\;mg/ml$. These results suggest that the Pleurotus eryngii grew in natural media using brown rice and Acanthopanax can be supplemented to the brown rice medium to enhance its ACE inhibitory activity as health/functional food materials.

천연물을 이용한 큰느타리 균사배양 및 Angiotensin Converting Enzyme 저해활성

새로운 건강기능성 식품소재를 개발하고자 현미, 가시오가피 및 인진쑥을 기질로 하여 큰느타리버섯 균사의 고체배양 조건을 검토하였으며, 배양산물의 성분분석 및 추출물의 ACE 저해 활성을 조사하였다. 가시오가피와 인진쑥을 현미배지에 첨가시 농도가 증가함에 따라 균사의 생육속도는 감소하였으며, 특히 가시오가피의 첨가가 인진쑥에 비해 큰느타리 균사의 생육에 미치는 영향이 컸다. 배양산물의 성분분석 결과, 수분함량은 $10.9{\sim}12.0%$ 범위이었고, 조단백질, 지질 및 섬유질은 현미배지에서 가장 높았으며, 무기질(칼슘, 칼륨 및 인) 함량은 가시오가피 첨가배지가 가장 높았다. 추출수율은 인진쑥 첨가배지가 4.80%로 가장 높았으며, 추출물의 pH는 현미배지가 pH 6.1로 가장 낮았다. 세가지 시료 추출물의 명도는 $85.8{\sim}87.1$ 범위이었고, 적색도는 현미와 가시오가피 첨가배지가 높았으며, 반면, 황색도는 인진쑥 첨가배지가 가장 높았다. 당 성분을 thin layer chromatography로 분석한 결과, 세가지 시료 모두 2개의 spot가 검출되었고, 이들은 각각 glucose와 maltose로 판단되었다. Angiotensin converting enzyme에 대한 저해율을 측정한 결과, 가시오가피 첨가배지가 시료농도 $0.2{\sim}1.0\;mg/ml$에서 가장 높은 활성을 나타내었다.