• 한방비만학회지
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• 제9권2호
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• pp.57-63
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• 2009

In recent year, We are concerned about anti-aging, disease-protection, long-life, many methods are used in solving this problem. And Those are related with antioxidative ability. Recently, We heard that Cucurbita moschata Duch. has anti-hypertensive effect and good for health. So I let made a experiment for this result of the anti-oxidant effect of Cucurbita moschata Duch. used for 3 methods, those are DPPH radical scavenging activity, Nitric oxide(NO) radical scavenging activity and Bovine serum albumin(BSA). The results of this study were as follows: We measured level of DPPH radical scavenging activity. And we obtained results that the ability of DPPH radical's elimination was increased when concentration of Cucurbita moschata Duch. was to $20\;mg/m{\ell}$. We measured level of Nitric oxide(NO) radical scavenging activity. And we founded that the ability of NO radical's elimination was increased when concentration of Cucurbita moschata Duch. was to $10\;mg/m{\ell}$. When we inspected antioxidation with Bovine serum albumin(BSA). And we obtained that antioxidative ability was increased after$2.5\;mg/m{\ell}$ of Cucurbita moschata Duch.. So I guess that Cucurbita moschata Duch. has effect of antioxidative ability. Hereafter we need differential experimental methods for evidence of antioxidative effect on Cucurbita moschata Duch.

• 한국식품영양과학회지
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• 제40권12호
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• pp.1793-1796
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• 2011

기원식물별, 재배연수별 황기 에탄올 추출물의 항산화활성 및 NO 생성능을 측정한 결과, 총 폴리페놀 함량은 몽고황기 2년근, 4년근 및 6년근이 각각 45.3 mg/g, 71.3 mg/g 및 78.0 mg/g으로 황기에 비해 더 많은 양이 함유되어 있었으며, 총 플라보노이드 함량 또한 총 폴리페놀 함량과 마찬가지로 몽고황기가 더 많은 양의 총 플라보노이드를 함유하고 있었다. 기원식물별 추출물의 항산화활성 측정 결과, 황기에 비해 몽고황기의 DPPH radical 소거활성이 높았으며, 재배 연수별로는 몽고황기 4년근이 가장 활성이 높았고($IC_{50}$=3.54 mg/mL), 기원식물별 $ABTS^+$ radical 소거활성은 2년근을 제외한 4년근 및 6년근에서는 몽고황기의 $ABTS^+$ radical 소거활성이 높았다. 기원식물에 따른 NO 생성능은 재배기간이 동일한 경우 황기에 비해 몽고황기에서 NO 생성능이 더 높았다. 몽고황기는 모든 연근에서 무처리구에 비해 NO 생성량이 많았으며 특히, 6년근 에탄올 추출물의 NO 생성능이 2년근 및 4년근에 비해 높았으나, 황기는 재배연수에 따른 유의적인 차이는 나타나지 않았다.

• 한국약용작물학회지
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• 제21권3호
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• pp.191-196
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• 2013

The effect on the antioxidant activity and Nitric Oxide activity production inhibitory activity of Taraxacum has not been known. Therefore, phenolics and flavonoid contents were investigated from the ethanol extracts of five different Taraxacum species. The results showed that, among the five Taraxacum, T. hallaisanensis contains the highest total phenolic and flavonoid contents. When the antioxidant activity was measured by DPPH, $ABTS^+$ and reducing power activity, the free radical scavenging activity of T. hallaisanensis was also the highest among five Taraxacum species. However, measurement by CCK-8 assay in Raw264.7 cells indicated that the extracts of Taraxacum species have no effect on cell viability. Moreover, we also investigated the effect of Taraxacum species on NO scavenging activity in lipopolysaccharide (LPS)-stimulated Raw264.7 cells. The results clearly showed that Taraxacum species inhibited NO production, and the inhibitory effect of T. hallaisanensis was the strongest. The above results suggested that Taraxacum species affected the antioxidant and NO scavenging activity, and among the five species, antioxidant and NO scavenging activity assay of T. hallaisanensis was significantly higher than those of other four Taraxacum species. Therefore, T. hallaisanensis could be used as a potential drug with anti-oxidant and anti-inflammatory effect.

• 동의생리병리학회지
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• 제18권5호
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• pp.1512-1515
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• 2004

In this study, we investigated in vitro nitric oxide (NO) scavenging effect on nine herbal extracts using an NO donor S-nitroso-N-acetylpenicillamine (SNAP) compared with vitamin C. All herbal extracts effectively reduced the generation of NO radicals in a dose-dependant manner and over 65% in 10h. Especially, Ephedrae herba, Carthami flos and Lonicerae flos declined over 75% of NO scavenging effect, suggested that the herbal extracts are the powerful free radical scavengers and may be effective in clinical applications.

• 대한본초학회지
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• 제23권4호
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• pp.121-134
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• 2008

Objectives: Melia toosendan(MT) has been used as a traditional Korean herbal medicine, and today it is used as a medication for colic, side aches, heartache and other disorders of liver. The aim of this study was to determine whether fractionated extracts of MT inhibit free radical generation such as DPPH radical, superoxide radical and nitric oxide, production of nitrite, an index of NO, PGE2, iNOS, COX-2 and proinflammatory cytokines in lipopolysaccharide(LPS)-treated RAW 264.7 macrophages. Methods: MT extract prepared with methanol, and then fractionated with hexane, dichloromethane, ethylacetate, n-butanol and water. Inhibitory effect of MT onto free radical generation was determined by measuring DPPH, superoxide anions and nitric oxide scavenging activities in vitro. Cytotoxic activity of extracts on RAW 264.7 cells was measured using 5-(3-caroboxymeth-oxyphenyl)-2H-tetra-zolium inner salt(MTS) assay. Intracelluar oxidation was analysed by DCF-DA assay. The nitric oxide(NO) production was measured by Griess reagent system. The levels of iNOS and COX-2 expression were confirmed by western blot. And pro inflammatory cytokines were measured by ELISA kit. Results: Our results indicated that fractionated extracts, especially dichloromethane and ethyl acetate extracts, significantly inhibited free radical generation, the LPS-induced $H_2O_2$, NO, $PGE_2$ production and iNOS, COX-2 expression accompanied by an attenuation of TNF-${\alpha}$, IL-1${\beta}$ and IL-6 formation in macrophages. Conclusions: These results indicate that dichloromethane and ethyl acetate extracts of MT have potential as an agent of chronic inflammatory diseases.

• 한국식품과학회지
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• 제45권2호
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• pp.206-212
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• 2013

민들레의 부위별 항산화활성을 검토하기 위하여 지상부 및 지하부의 물, 50, 70, 100% 에탄올 용액과 열수추출조건을 이용하여 얻은 추출물의 DPPH 및 ABTS 라디칼 소거능을 분석하였다. 민들레 지상부 및 지하부 열수추출물의 DPPH 라디칼 소거능이 가장 우수한 것으로 분석되었으며, 추출물의 DPPH 라디칼 소거력은 열수추출물 > 70% 에탄올 추출물 > 50% 에탄올 추출물 > 100% 에탄올 추출물 > 물 추출물 순으로 나타났다. 추출물의 ABTS 라디칼 소거활성을 검토한 결과 지상부 및 지하부의 추출물중 열수추출물이 가장 높은 ABTS 라디칼 소거능을 나타낸 반면 물추출물은 가장 낮은 소거능을 나타내어 DPPH 라디칼 소거능을 분석한 결과와 유사한 경향을 나타내었다. 또한 항산화활성이 가장 우수한 것으로 나타난 열수추출물을 이용하여 극성별 유기용매(클로로포름, 에틸아세테이트, 부탄올)을 이용한 분획물을 얻어 이들의 항산화활성을 검토하였다. ABTS 및 DPPH 라디칼 소거활성, 총 페놀성화합물의 함량을 분석한 결과 에틸아세테이트 분획물의 항산화 활성이 가장 우수한 것으로 나타났으며, 에틸아세테이트 분획물을 제외한 클로로포름, 부탄올, 물 분획물의 경우 지상부 분획물이 지하부보다 라디칼 소거능이 우수한 것으로 나타났다. 각 분획물들이 RAW 264.7 대식세포주에서 LPS 처리에 의한 nitric oxide 생성에 미치는 영향을 검토하였다. 지상부 및 지하부의 에틸아세테이트 분획물이 LPS 처리에 의해 증가한 nitric oxide의 생성을 효과적으로 억제하였으며, 지상부 에틸아세테이트 분획물 $20{\mu}g/mL$ 처리시 LPS 처리에 의해 증가된 NO 생성을 약 50% 저해하는 것으로 나타났으며, 이러한 효과는 지하부 에틸아세테이트 분획물보다 우수한 것으로 분석되었다. 본 연구는 민들레 부위별 다양한 추출조건에서 획득한 추출물들의 총 항산화활성을 비교분석하여 제시함으로써 소재개발을 위한 추출조건을 설정하는데 활용될 수 있을 것으로 판단되며, 또한 각 분획물들의 총 항산화활성 및 RAW 264.7 대식세포주를 이용하여 LPS 처리에 의해 증가된 nitric oxide의 생성억제능을 비교분석하여 제시함으로써 기능성 소재개발에 있어서 기초자료로 활용 할 수 있을 것으로 판단된다.

• Asian-Australasian Journal of Animal Sciences
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• 제24권10호
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• pp.1440-1446
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• 2011

The study investigated the effects of dietary Vitamin E (VE) on nitric oxide (NO) metabolism, immune function and analyzed the correlation between NO free radical and cytokines (IL-2 and IL-6) in broilers. One hundred and fifty 2-week-old broilers were randomly divided into three groups. Control group and lower VE ($VE^-$) group were provided with a basic diet supplemented with 12.55 mg/kg VE and 2.55 mg/kg VE for 30 days, respectively. Higher VE ($VE^{-}-VE^+$) group was supplemented with 2.55 mg/kg VE in the first 15 days and then 32.55 mg/kg VE in the next 15 days. Five broilers in each group were then sacrificed on the 5th, 10th, 15th, 20th, 25th and 30th days, respectively, and the content of NO free radical, superoxide dismutase (SOD), glutathione peroxidase (GSHPx), malondialdehyde (MDA) and cytokines, IL-2 and IL-6, were measured. The results showed that lower VE could decrease growth performance of broilers while higher VE could increase growth performance and eliminate differences resulted from feeding lower VE dietary in early stages (p<0.05). Compared with the control group, lower VE could increase significantly NO and MDA concentration, and increase IL-2 concentration in serum (p<0.05). Higher VE could significantly increase activities of SOD and glutathione GSH-Px (p<0.05). IL-2 is positively correlated with NO in heart (p<0.05) and IL-6 is negatively correlated with NO in liver (p<0.05) and heart (p<0.01). These results indicate that dietary VE could regulate antioxidant capacity and NO metabolism of broilers and higher VE-supplemented diet could directly decrease production of IL-2.

• 한국약용작물학회지
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• 제19권5호
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• pp.368-372
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• 2011

In this study, we investigated on antioxidative activity and nitric oxide production inhibitory activity of various solvent extracts of Lespedeza bicolor. The total polyphenol content of the methanol extract was 192.6 mg/g and flavonoid content of the acetone extract was 40.6 mg/g, as the highest content. In DPPH radical scavenging ability, $SC_{50}$ values of the ethanol and methanol extract were exhibited $0.69mg/m{\ell}$ and $0.89mg/m{\ell}$, respectively. However, in nitric oxide(NO) scavenging ability, $SC_{50}$ values of the acetone was exhibited $0.72mg/m{\ell}$ as the highest activity. Moreover, the acetone extract showed strong NO production inhibitory effect in lipopolysaccharide(LPS)-stimulated Raw 264.7 cell. In the cytotoxicity measurement by MTT assay, the extracts were exhibited Raw 264.7 cell viabilities of 92.57~129.04% as nontoxic result in concentration of $65{\sim}650{\mu}g/m{\ell}$. As a result, the acetone extract of L. bicolor could be applicable to functional materials for anti-inflammatory related fields.

• Journal of Applied Biological Chemistry
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• 제53권2호
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• pp.91-98
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• 2010

본 연구에서는 결명자, 오미자, 구기자, 박하, 국화, 산마, 생강, 둥글레, 감초, 오가피, 녹차, 다시마를 발효시킨 들빛 발효액으로 여러 가지 생리활성에 대하여 분석하였다. 우선, 들빛 발효액의 플라보노이드 함량과 DPPH 활성을 측정하였다. 그 결과 들빛 발효액의 총 플라보이드 함량은 $3.4{\pm}0.5\;mg/g$으로, DPPH법을 통해 측정한 들빛 발효액의 radical 소거능은 96%로 나타났다. 들빛 발효액의 SOD 유사활성은 29%로 나타내었고, XOase에 의해 생성된 superoxide radical 소거능은 88%로 높게 나타났다. 들빛 발효액의 항고혈압 측정실험에서는 66%의 저해률을 나타내어 ACE 저해 활성이 뛰어난 것으로 나타났다. 혈전분해능에 대한 들빛 발효액의 분석 결과는 혈전용해제로 알려져 있는 plasmin과 유사한 활성을 보이고 있다. 들빛 발효액과 면역활성과의 연관성은 NO 생성 증가율과 LPS에 의해 유도되는 NO 생성 억제율 분석으로 조사되었다. 그 결과, 들빛 발효액은 무려 15배의 높은 NO 생성 증가율을 보였다. 또한 LPS에 의해 유도된 NO 생성 억제율은 들빛 발효액 100%에서 42%로 나타나 높은 면역조절능을 나타내었다. 이상의 결과는 들빛 발효액의 우수한 생리활성을 증명하고 있고, 항산화력, 항고혈압 효과, 혈전분해능 및 면역 조절활성이 높은 것으로 나타나 기능성 음료의 소재로서 그 활용도가 높을 것으로 판단된다.

• 대한한의학회지
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• 제40권4호
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• pp.72-83
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• 2019

In this study, we investigated the antioxidant and anti-inflammatory effect of the Paulownia tomentosa extracts (PTE). The total polyphenol and flavonoid contents of PTE were 148.98±1.84 mg GAE/g extract, and 115.33±4.16 mg CE/g extract, respectively. The PTE showed that strong antioxidant activity via -diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, ABTS radical scavenging activity and FRAP assay. The anti-inflammatory activity was evaluated on lipopolysaccharide (LPS)-stimulated RAW264.7 cells. PTE remarkably reduced protein expression of inducible nitric oxide (iNOS), resulting in inhibition of production of nitric oxide (NO). Additionally, pre-treatment of PTE significantly suppressed the production of inflammatory cytokines, such as tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). Moreover, PTE significantly attenuated LPS-induced IkappaB (IκB) degradation and suppressed nuclear factor kappa B (NF-κB) nuclear translocation in macrophages. The PTE showed high antioxidant and anti-inflammatory activity. These data suggest that PTE has pharmacological activity and may be useful for the development of anti-inflammatory agents.