Abstract
In this study, fibrinolytic activities of fermented yellow agabean (FYA) and black agabean (FBA), and the antioxidation efficiencies of 70% ethanol extract of fermented yellow agabean (FYAE) and black agabean (FBAE) were investigated by selecting Bacillus sp. sm26 strain. Fibrinolytic activities of FYA and FBA were $6.38{\pm}0.5$ and $6.83{\pm}0.5\;U/ml$, which were 1.3 and 1.4 times higher than that of FSB, respectively. With regard to total phenolic contents, FYAE and FBAE were $3.40{\pm}0.44\;mg/g$ and $2.45{\pm}0.20\;mg/g$ respectively, suggesting that their contents were about twice as high as that of fermented soybean extract (FSBE) used as a control. In comparison with FSBE, total protein and sugar contents of FYAE were $0.56{\pm}0.11$ and $2.41{\pm}0.48\;mg/g$, respectively, and those of FBAE were $0.39{\pm}0.12$ and $2.72{\pm}0.63\;mg/g$, respectively. This result suggests that FYAE was 4.7 and 1.7 times higher than FSBE, respectively. The DPPH radical scavenging activity of FBAE was 79% at 1 mg/ml, which was highest among the fermented bean extracts, and was twice as high as FSBE in regards to activity. In addition, FBAE exhibited the highest reducing power at 1 mg/ml, which was higher than FSBE by two-fold. With regard to lipid peroxidation, FBAE and FYAE were 93% and 80% at 1 mg/ml, which were 3 and 2.5 times higher than FSBE, respectively. Of note, the hydrogen peroxide scavenging activities of FBAE and FYAE were 82% and 54% at 1 mg/ml, offering activity that was 4 and 2.5 times higher than FSBE, respectively. Based on these results, the fibrinolytic activity and antioxidation efficiency of the fermented agabeans were significantly higher than other soybeans. Therefore, these studies may suggest that the functional agabeans can be a potential candidate for a natural functional food.
본 연구에서는 혈전용해능이 우수한 Bacillus sp. sm26을 선별하고 신품종 기능성 콩인 노란 아가콩(YA)와 검정 아가콩(BA)을 발효시킨 발효콩(FYA, FBA)의 혈전용해 활성과 70% ethanol 추출(FYAE, FBAE)에 대한 항산화 효능을 조사하였다. FYA와 FBA의 혈전용해 활성은 각각 $6.38{\pm}0.5$와 $6.83{\pm}0.5\;U/ml$로 대두 발효물(FSB)보다 각각 1.3배와 1.4배 높은 것으로 나타났다. 총 페놀 함량은 FYAE와 FBAE가 각각 $3.40{\pm}0.44\;mg/g$, $2.45{\pm}0.20\;mg/g$으로 나타나, 대두 발효 추출물(FSBE)에 비하여 약 2배 이상의 높은 페놀 함량을 나타내었다. FYAE의 총 단백질과 총 당 함량은 각각 $0.56{\pm}0.11\;mg/g$과 $2.41{\pm}0.48\;mg/g$이었으며 FYBA는 각각 $0.39{\pm}0.12\;mg/g$과 $2.72{\pm}0.63\;mg/g$으로 나타나, FYAE가 FSBE보다 각각 4.7배와 1.7배 높은 총 단백질과 총 당 함량을 지닌 것으로 나타났다. DPPH radical 소거능은 FBAE가 1 mg/ml에서 79 %로 가장 높게 나타났으며 2배 높은 활성을 나타내었다. 환원력은 FBAE가 1 mg/ml의 농도에서 가장 높은 환원력을 나타내었으며 FSBE에 비해 2배 높은 활성을 보였다. 지질 과산화능은 1 mg/ml일 때 FBAE는 93%로 FSBE의 약 3배 높은 활성을 나타내었고 FYAE 또한 80%로 2.5배 높은 활성을 보였다. 과산화 수소에 대한 소거능은 1 mg/ml 농도에서는 FBAE가 82%로 FSBE에 비해 4배 높은 효과를 나타내고 FYAE의 경우 2.5배 높은 효과를 나타낸다. 이상의 연구 결과에서, 기능성 콩인 아가콩 발효물의 혈전용해 활성과 항산화 효능은 일반 콩에 높게 나타났으며 이는 앞으로 새로운 천연 기능성 식품으로서의 이용 가능성을 시사하고 있다.
