• 한국환경과학회지
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• 제25권8호
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• pp.1131-1142
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• 2016

This study was conducted to compare the antioxidant, anticytotoxic, and anti-inflammatory properties of Euphorbia maculata ethanol extract with those of E. supina ethanol extract. 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical and superoxide scavenging activities of E. maculata at $50{\mu}g/mL$ were $38.3{\pm}3.7$ and $21.5{\pm}1.2%$, respectively, whereas those of E. supina at the same concentration were $109.4{\pm}0.9$ and $59.5{\pm}4.8%$, respectively. Oxygen radical absorbance capacities of E. maculata and E. supina at $10{\mu}g/mL$ were $14.70{\pm}0.63$ and $26.17{\pm}1.36nmol/mL$ Trolox, respectively. Cupric reducing antioxidant capacities of E. maculata and E. supina at $10{\mu}g/mL$ were $10.22{\pm}0.97$ and $62.99{\pm}5.28nmol/mL$ Trolox, respectively. Total phenolic contents of E. maculata and E. supina at $50{\mu}g/mL$ were $29.03{\pm}0.14$ and $87.89{\pm}0.20nmol/mL$ gallic acid, respectively. E. maculata and E. supina were reported to prevent supercoiled DNA breakage induced by peroxyl and hydroxyl radicals in a concentration-dependent manner, where protection against the supercoiled DNA breakage provided by E. supina was greater than that provided by E. maculata. E. maculata and E. supina at $100{\mu}g/mL$ inhibited tert-butyl hydroperoxide-induced cytotoxicity in HepG2 cells by $49.4{\pm}4.3$ and $87.3{\pm}4.5%$, respectively. E. maculata and E. supina at $500{\mu}g/mL$ inhibited lipopolysaccharide-induced nitric oxide production in RAW 264.7 cells by $63.1{\pm}7.0$ and $85.2{\pm}1.6%$, respectively. The antioxidant capacities including DPPH radical scavenging, superoxide scavenging, oxygen radical absorbance, and cupric reducing antioxidant activity were found to be highly correlated with total phenolic content (0.896 < r < 0.983, p < 0.01) and anticytotoxic activities (0.915 < r < 0.960, p < 0.01). However, the superoxide scavenging activity was not significantly correlated (r = 0.604, p > 0.05) with the anti-inflammatory activity. Thus, these findings demonstrated that the radical scavenging, anticytotoxic, and anti-inflammatory capacities of E. supina were more potent than those of E. maculata. Further studies are needed to elucidate the properties of polyphenolic constituents in E. supina responsible for these effects and the underlying mechanisms.

• 한국환경과학회지
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• 제24권11호
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• pp.1315-1329
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• 2015

The objective of this study was to investigate anticytotoxic and antioxidatative capacities of ethanol extracts from Acer tegmentosum Maxim (A. tegmentosum) stem in vitro. The extract at concentration of 200 ug/mL inhibited 10 and 20 ug/mL arsenic trioxide-induced cytotoxicity of HepG2 cells by 79.3 and 57.5%, respectively. The extract at concentration of 200 ug/mL inhibited 0.2 and 0.5 mM t-BHP-induced cytotoxicity of HepG2 cells by 66.3 and 35.7%, respectively. Antioxidative effects of the extract were examined via measurement of ABTS, superoxide, and peroxyl radical scavenging activities. ABTS radical scavenging activity of the extract was higher than that of ${\alpha}$-tocopherol. Superoxide scavenging activity of the extract was higher than that of catechin. Oxygen radical absorbance capacity of the extract was higher than that of ascorbic acid. Cupric reducing antioxidant capacity of the extract was higher than that of ${\alpha}$-tocopherol. The extract at concentrations of 100 and $500{\mu}g/mL$ inhibited 10 mM t-BHP-induced lipid peroxidation of HepG2 cells by 38.2 and 80.7%, respectively. The extract prevented supercoiled DNA strand breakage induced by hydroxyl or peroxyl radical. Total phenolic and flavonoid contents of the extract at concentration of $100{\mu}g/mL$ were 71.3 nmol/mL gallic acid and 18.8 nmol/mL catechin equivalents, respectively. Thus, strong cytoprotective and antioxidant effects of A. tegmentosum stem extract seem to be due to, at least in part, the prevention from free radicals-induced oxidation as well as high levels in polyphenolic contents.

• 한국식품영양과학회지
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• 제43권7호
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• pp.980-988
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• 2014

승마갈근탕액(SG)과 발효 승마갈근탕액(FSG)에 의한 항산화, 항균 및 세포독성에 대한 효과를 조사한 결과는 다음과 같다. SG와 FSG의 항산화 효과를 DPPH법을 이용하여 측정한 결과 $200{\mu}g/mL$에서 70.2%, 74.3%로 FSG가 높았다. SG와 FSG에 의한 아질산염 소거능은 pH 1.2, 3.0, 6.0 조건에서 발효 승마갈근탕액의 아질산염 소거능이 높았으며, pH가 낮을수록 아질산염 소거능은 높았다. SG와 FSG의 SOD 유사활성은 발효 승마갈근탕액에서 증가하였다. SG와 FSG의 총 플라보노이드 함량은 각각 47.14 mg/g, 52.11 mg/g으로 발효 처리 시 총 플라보노이드 함량이 증가하였다. SG와 FSG의 항균 효과를 조사한 결과 효모형 진균인 C. albicans에 대한 최소억제농도($MIC_{50}$)가 $800{\mu}g/mL$로 낮게 나타나 항진균 효과가 S. mutans, S. epidermidis와 S. aureus($MIC_{50}$, 1,600~3,200)에 대한 항균 효과보다 높았다. SG의 S. epdermidis와 S. aureus에 대한 항균 효과는 $MIC_{50}$이 $3,200{\mu}g/mL$였으나, FSG에 의한 $MIC_{50}$은 $1,600{\mu}g/mL$였다. SG와 FSG의 카드뮴에 대한 섬유소세포 보호 효과는 각각 $10.0{\mu}g/mL$ 처리 농도에서 64.36% 및 76.12%로 FSG의 세포보호 효과가 높게 나타났다. FSG의 폴리페놀성 물질 변화는 발효 처리 시 활성화된 daidzein 함량이 $63{\mu}g/L$로 SG에 비해 약 5배 증가하였다. 승마갈근탕액을 발효처리 시에 탕액의 색상이나 향기에 대한 선호도 및 전체적인 기호도가 증가하였다.

• 한국식품영양과학회지
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• 제37권4호
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• pp.416-421
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• 2008

다시마분말과 해양심층수염을 첨가하여 제조한 된장 메탄올 추출물의 항돌연변이원성과 세포독성을 측정하였다. S. Typhimurium TA98과 TA100 균주를 이용한 실험에서 모든 된장의 시료에서 돌연변이성이 없었으며, 항돌연변이 원성 실험에서는 직접변이원인 MNNG($0.4{\mu}g$/plate)의 경우 TA100 균주에서 다시마분말을 첨가한 해양심층수된장(된장C)의 시료농도 $200{\mu}g$/plate에서 89.1%의 억제효과를 나타내었으며 4NQO($0.15{\mu}g$/plate)에 대해서는 같은 시료 농도에서 70%의 억제효과를 나타내었다. 그리고 4NQO에서 TA98 균주에 대해서 다시마분말을 첨가한 해양심층수된장(된장C)은 84.4%의 높은 억제효과를 나타내었으며 모든 시료는 농도 의존적으로 억제하는 것으로 나타났다. 세포독성 효과를 알아보기 위해서 HeLa, Hep3B, AGS, A549와 MCF-7을 사용하였으며 다시마분말을 첨가한 해양심층수된장(된장C)이 1 mg/mL의 농도에서 위암세포를 제외한 자궁암세포, 간암세포, 폐암세포 및 유방암세포에서 모두 70% 이상의 높은 억제활성을 나타내었으며 그 중에서도 폐암세포에서 77.3%의 가장 높은 암세포 성장억제율을 나타내었다. 또한 다시마분말을 첨가한 해양심층수된장(된장C)은 고 형암 성장억제실험에서 대조군에 비해서 32.5%의 고형암 성장억제효과를 나타내었다.