• 한국자원식물학회지
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• 제26권5호
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• pp.548-556
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• 2013

시설오이로 많이 재배되고 있는 4 품종을 선발하여 생육단계별로 DPPH radical 소거활성, 아질산염 소거활성, ABTS 소거활성 그리고 항산화효소 활성에 대하여 비교 분석하였다. 장죽청장 품종이 모든 생육단계에서 DPPH radical 소거활성이 상대적으로 높게 나타났으며, 그 외 품종들 간에는 큰 차이를 보이지는 않았다. 또한 생육단계별로는 수확기에 못 미친 미성숙단계에서 DPPH radical 소거 활성이 높게 나타났다. 아질산염 소거활성은 pH가 1.2일 경우 모든 품종과 생육단계에서 40% 이상 분해시켰으며, 특히 장형낙합과 신조은백다다기 품종이 상대적으로 높은 활성을 보였다. 또한 pH 4.0에서는 추출물 모두에서 30% 이상의 아질산염 소거활성을 나타냈으며, pH 6.0에서는 대부분 활성이 없었다. ABTS 소거활성은 장죽청장과 늘푸른 청장 품종이 다른 품종보다 상대적으로 다소 높은 소거능을 나타냈고, 생육단계별로는 대부분의 품종에서 ABTS 소거능에 큰 차이를 보이지는 않았다. SOD 활성은 모든 품종과 전 생육단계에서 95% 이상의 높은 활성을 보였으며, 품종 간에 거의 유의한 차이를 나타내지 않았다. CAT 활성은 전체적으로 장죽청장과 늘푸른청장 품종이 그리고 APX 활성은 늘푸른청장, 장형낙합 품종에서 상대적으로 높은 활성을 나타냈고, POX 활성은 생육단계별로 뚜렷한 경향을 보여 수확기에 이를수록 활성이 현저히 감소하는 결과를 나타냈다. 본 실험의 결과, 오이의 높은 항산화능을 확인함으로서 향후 향장소재 및 식품소재로서의 이용 가치성을 증대시킬 수 있음을 시사한다.

• 한국약용작물학회지
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• 제21권4호
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• pp.255-261
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• 2013

The purpose of this study was to examined the antioxidant activities by water and 70% ethanol extract from durian (Durio zibethinus.) seed, sarcocarp and peel. Durian extract were studied for reducing sugar content, polyphenol content, superoxide dismutase (SOD) like activity, electron donating ability, nitrite scavenging ability, flavonoid content, hydroxy radical scavenging activity. Reducing sugar content were increased peel > sarcocarp > seed. Total polyphenol, flavonoid content, DPPH radical scavenging ability and SOD like activity were increased seed > peel > sarcocarp. Total polyphenol content was relatively high as $21.90{\pm}0.50mg/g$ in the ethanol extract of the seed. DPPH radical scavenging ability was relatively high as $62.08{\pm}2.63%$ in the water extract of the seed. Nitrite scavenging ability was no significant difference. Hydroxy radical scavenging activity was increased seed > peel > sarcocarp, was relatively high as $58.27{\pm}1.13%$ in the water extract of the seed.

• 동의생리병리학회지
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• 제21권5호
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• pp.1135-1141
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• 2007

In recent year, We are concerned in anti-aging, disease-protection, long-life, many method are used in solving this problem. Recently, We heard that Luffae Fructus Retinervus(LFR) has effect of anti-aging, disease-protection, long-life. So I let made a experiment for this result. The purpose of this study is to; 1) the anti-oxidant effect of Luffae Fructus Retinervus(LFR) used for 3 methods, those are DPPH radical scavenging activity, Nitric oxide(NO) radical scavenging activity, Superoxide anion radical scavenging activity, 2) cultivation 3T3-L 1 Preadipocytes and Protein chip used for ProteoPlexTM 16-Well Murine Cytokine Array Kit. We measured level of DPPH radical scavenging activity. And we experienced that the ability of DPPH radical's elimination was increased by rising concentration of LFR. When the concentration of LFR was 5 mg/ml, the ability of DPPH radical's elimination was Maximum. We measured level of Nitric oxide(NO) radical scavenging activity. And we founded that the ability of NO radical's elimination was significant when concentration of LFR was from 1.25 mg/ml to 2.5 mg/ml. We measured level of Superoxide anion radical scavenging activity. And we founded that the ability of Superoxide anion radical's elimination was maximum when concentration of LFR was 0.3125 mg. When we inspected Antioxidative Effects with BSA, we experienced that ability of defense was increased by rising concentration of LFR. We known the immunity of LFR about 3T3-L1 Preadipocytes and gained the increase of Cytokines(IL-2, IL-4, GM-CSF) without IL-12p70, $INF-{\gamma}$, $TNF-{\alpha}$ So I guess that Luffae Fructus Retinervus(LFR) has effects of anti-aging, disease-protection, long-life, etc.

• 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.

• 한국응용과학기술학회지
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• 제34권3호
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• pp.673-682
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• 2017

식물 및 동물성 단백질 유래 펩타이드 형태의 단백질 가수 분해물들은 항산화, 고혈압 완화, 면역조절, 진통완화 및 항균작용 등 생리활성이 있는 것으로 알려져 왔다. 본 연구는 연산오계란 단백질 가수 분해물을 Ultrafiltration를 이용하여 HDS(분획되지 않은 가수 분해물), 1 kDa, 5 kDa, 10 kDa, 50 kDa로 분획된 기능성 펩타이드의 DPPH radical scavenging activity, superoxide anion radical scavenging activity, hydroxyl radical scavenging activity 및 $Fe^{2+}$ chelation ability을 평가하였다. 그 결과 DPPH radical scavenging activity 최대값은 1 kDa(70.83 %), hydroxyl radical scavenging activity 최대값은 5 kDa (47.01 %), superoxide anion radical scavenging activity 최대값은 5 kDa(40.57 %), $Fe^{2+}$ chelation ability 최대값은 5 kDa(29.87 %)로 나타났다. Ultrafiltration를 이용하여 fractionation된 단백질 가수 분해물의 항산화 저해 능력 $IC_{50}$ 평가하였다. 그 결과 HDS의 최대값은 superoxide anion radical scavenging activity($IC_{50}$, 5.42 mg/ml)이고, 1 kDa의 최대값은 $Fe^{2+}$ chelation ability($IC_{50}$, 1.67 mg/ml)이고, 5 kDa의 최대값은 $Fe^{2+}$ chelation ability($IC_{50}$, 2.09 mg/ml)이고, 10 kDa의 최대값은 $Fe^{2+}$ chelation ability($IC_{50}$, 2.61 mg/ml)이고, 50 kDa의 최대값은 $Fe^{2+}$ chelation ability($IC_{50}$, 4.53 mg/ml)이다. 그러므로 본 연구 결과를 바탕으로 5 kDa를 이용하여 오계란 단백질에서 분획한 펩타이드는 항산화 기능성 식품소재로서 활용할 가치가 높을 것으로 기대한다.

• 한국식품저장유통학회지
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• 제18권1호
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• pp.59-64
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• 2011

본 연구에서는 용매별(methanol, ethanol, acetone 및 water)로 추출한 canola meal의 항산화 활성을 조사하였다. 모든 canola meal 용매 추출물들은 첨가 농도가 증가할수록 항산화 활성이 점진적으로 증가하였다. 추출물 중에서 methanol 추출물이 가장 낮은 $EC_{50}$ (DPPH radical scavenging ability; 0.9 mg/mL, ABTS radical scavenging ability; 3.5 mg/mL, reducing power; 1.3 mg/mL and chelating ability; 8.5 mg/mL)과 가장 많은 항산화 물질 (total phenolics; $63.3\;{\mu}g$/mg, total flavonoids; $21.3\;{\mu}g$/mg)을 함유하는 것으로 나타났다. 보다 정확한 canola meal의 항산화 활성을 조사하기 위하여 항산화 활성이 높은 methanol 추출물을 sephadex LH-20 column을 이용하여 순차적으로 MF 1, MF 2 및 MF 3의 3개의 분획물을 얻었으며, 동일한 농도(1.5 mg/mL)에서 측정한 항산화 활성에서 DPPH radical scavenging ability는 MF 2(75.56%)에서, ABTS radical scavenging ability와 reducing power는 MF 3(31.17% and 1.60)에서, chelating ability는 MF 1(77.72%)에서 가장 높게 나타났다.

• 대한화장품학회지
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• 제46권4호
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• pp.329-337
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• 2020

본 연구는 willamette 품종의 동결건조라즈베리분말, n-hexane 및 ethyl acetate를 이용하여 라즈베리 추출물(Rubus idaeus (Raspberry) fruit extract, RIFE)을 제조한 다음 페놀 화합물 함량, 철 이온 환원능력, 그리고 라디칼 소거 능력의 측정을 수행하였다. Willamette 품종 라즈베리추출물은 10% 농도까지 세포독성을 보이지 않았다. 해당 농도로 실험을 수행한 결과 총 페놀 화합물 함량은 375.3 ppm, 총 플라보노이드 함량은 43.46 ppm이 포함된 것을 확인하였고, ferric reducing antioxidant power (FRAP) reagent를 이용한 철 이온 환원능력은 FeSO4 0.532 mM에 해당하는 환원능력을 가졌음을 확인하였다. 이를 바탕으로 항산화 소재의 대표적 원료인 L-ascorbic acid와 비교하는 라디칼 소거능 실험을 실시하였다. 그 결과 1,1-diphenyl- 2-picrylhydrazyl (DPPH) 라디칼 소거능력은 94.5 ± 0.7%를 나타냈고, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) 라디칼 소거능은 99.4 ± 2.82%를 나타냈으며, nitric oxide (NO) 라디칼소거능은 88.5 ± 0.4%를 나타냈다. 표준인 L-ascorbic acid 용액과 비교할 때 25 - 50 ppm 사이의 효능을 지닌 DPPH 라디칼 소거능 / 100 ppm에 근접한 효능을 지닌 ABTS 라디칼 소거능 / 1,000 ppm 이상의 효능을 지닌 NO 라디칼 소거능을 가졌음을 확인하였다. 이러한 결과들은 willamette 품종 라즈베리추출물이 항산화 활성을 가지는 효과적인 화장품 소재로 적용 가능하다는 것을 시사한다.

• Preventive Nutrition and Food Science
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• 제14권4호
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• pp.277-282
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• 2009

The antioxidant potency of methanolic extract of Duchesnea indica (MDI; Indian strawberry) was investigated by employing various established in vitro systems, such as total phenolic content, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity, reducing power assay, metal chelating assay, superoxide radical scavenging activity and protective ability of DNA damage and protein oxidation. MDI inhibited metal chelating by 75.57% at 2 mg/mL, scavenged 50% DPPH free radical at 29.13 ${\mu}$g/mL, and eliminated approximately 46.21% superoxide radical at the concentration of 1 mg/mL. In addition, MDI showed strong ability on reducing power, DNA damage protection and protein oxidation protection. Overall, results suggested that MDI might be beneficial as a potent antioxidant and effectively employed as an ingredient in food applications.

• 한국응용과학기술학회지
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• 제34권3호
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• pp.631-642
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• 2017

식물 및 동물성 단백질 유래 펩타이드 형태의 단백질 가수 분해물들은 항산화, 고혈압 완화, 면역조절, 진통완화 및 항균작용 등 생리활성이 있는 것으로 알려져 왔다. 본 연구는 6가지 프로티아제를 이용하여 오계란 단백질 가수분해물을 생산하고, 생산된 펩타이드의 항산화 능력을 평가하였다. 그 결과 가수분해도의 최대값은 protamex(46.3%)이고, DPPH 라디칼 소거능 최대값은 bromelain(57.23%), 하이드록시 라디칼 소거능 최대값은 alcalase(30.21%), 슈퍼옥사이드 라디칼 소거능 최대값은 alcalase(58.07%), $Fe^{2+}$ 킬레이션 능력 최대값은 alcalase(72.06%)로 나타났다. 더 나아가 효소별 항산화 저해 능력 $IC_{50}$ 평가하였다. 그 결과 alcalase에 의한 최대값은 금속 킬레이션 능력($IC_{50}$, 1.24 mg/mL)이고, bromelain에 의한 최대값은 DPPH 소거능($IC_{50}$, 2.46 mg/mL)이고, flavourzyme에 의한 최대값은 금속 킬레이션 능력($IC_{50}$, 1.25 mg/mL)이고, neutrase에 의한 최대값은 DPPH 소거능($IC_{50}$, 3.64 mg/mL)이고, papain에 의한 최대값은 DPPH 소거능($IC_{50}$, 3.82 mg/mL)이고, protamex에 의한 최대값은 DPPH 소거능($IC_{50}$, 1.93 mg/mL)이었다. 따라서 protease를 이용하여 오계란 단백질에서 추출한 펩타이드는 항산화 기능성 식품소재로서 활용할 가치가 높을 것으로 기대한다.

• 동의생리병리학회지
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• 제21권4호
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• pp.934-939
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• 2007

In recent year, We are concerned about anti-aging, disease-prevention, longevity, so many methods are used in solving this problem. And Those are related with antioxidative ability. Recently, We heard that Mori Cortex was known to reduce the hypertension and was helpful in promoting health, and Mori Ramulus was effective against obesity, etc. So, This study was performed to investigate the antioxidative effect of hot-water extracts of Mori Cortex and Mori Ramulus used for 3 methods, those are DPPH radical scavenging activity, Nitric oxide(NO) radical scavenging activity and Bovine serum albumin(BSA). And we compared Mori Cortex and Mori Ramulus on Antioxidative Effects. The results of this study were as follows: We measured levels of DPPH radical scavenging activity and Nitric oxide(NO) radical scavenging activity. And we obtained results that Mori Ramulus was most effective with the concentration of 5 $mg/m{\ell}$, and Mori Cortex was most effective with the concentration of 2.5 $mg/m{\ell}$, And we examined the antioxidative effects of Mori Ramulus and Mori Cortex with $CU^{2+}/H_20_2$-induced Bovine serum albumin(BSA). And we obtained that antioxidative ability was increased after 1.25 $mg/m{\ell}$ and that was most effective with the concentration of 5 $mg/m{\ell}$ on both of them. And antioxidative ability of Mori Cortex was better than Mori Ramulus(p<0.05). So I guess that hot-water extracts of Mori Ramulus and Mori Cortex have effects on antioxidative ability, but Mori Cortex is better than Mori Ramulus on antioxidation. Hereafter we need differential experimental methods of antioxidative effect on both of them.