• 한국식품영양학회지
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• 제35권4호
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• pp.259-267
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• 2022

The purpose of this study was to evaluate the antioxidative activities of jeolpyun containing Cnidium officinale M extract (2%, 4%, 6%, 8%) by total polyphenol contents, electron donating ability on 2,2-diphenyl-1-picrylhydrazyl (DPPH), scavenging ability of superoxide anion radical and decomposing ability of hydrogen peroxide. In chromaticity analysis, the brightness significantly decreased with increasing Cnidium officinale M extract content. Jeolpyun containing 8% Cnidium officinale M extract revealing the highest value for the redness and the yellowness, 1.07, 12.70, respectively. The total polyphenol contents of jeolpyun containing 8% Cnidium officinale M extract were the highest content of 4,213 ㎍ gallic acid equivalent (GAE)/mL. The total polyphenol contents revealed significant difference (p<0.05). Jeolpyun containing 8% Cnidium officinale M extract revealing the highest electron donating ability (83.55%). The electron donating abilities were significantly related at p<0.05. The scavenging abilities of superoxide anion radical for jeolpyun containing 4% Cnidium officinale M extract revealed the highest ability (0.01676). There was no significant difference. The hydrogen peroxide decomposing ability for jeolpyun containing 8% Cnidium officinale M extract revealed the most hydrogen peroxide decomposing ability (-0.193) and the hydrogen peroxide decomposing ability revealed a significant difference (p<0.05).

• 한국식품영양학회지
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• 제33권5호
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• pp.561-569
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• 2020

In this study, the antioxidative activity of Jeolpyun containing S. glauca (Bunge) Bunge powder (2%, 4%, 6%, and 8%) and extract (2%, 4%, 6%, and 8%) was evaluated based on the total polyphenol contents, electron-donating ability, scavenging of superoxide anion radical, and decomposition of hydrogen peroxide. Total polyphenol contents of Jeolpyun containing 8% S. glauca (Bunge) Bunge powder were the highest with a value of 2,280±0.00 ㎍ GAE/mL. It was observed that total polyphenol content exhibited a significant relation with concentrations at p<0.05. The electron-donating ability of Jeolpyun containing 8% S. glauca (Bunge) Bunge extract was the highest with a value of 83.93±0.69%. The electron-donating abilities revealed significant differences between concentrations (p<0.05). The superoxide radical scavenging ability of the blank was 0.01523±0.00068 and Jeolpyun containing 6% S. glauca (Bunge) Bunge powder was the highest with a value of 0.00977±0.00842. The hydrogen peroxide decomposing ability of Jeolpyun containing 0% S. glauca (Bunge) Bunge powder was -0.00377±0.0049; 8% S. glauca (Bunge) Bunge powder revealed the highest decomposing ability of -0.0476±0.0234. Hydrogen peroxide decomposing abilities revealed significant differences between concentrations (p<0.05). Jeolpyun containing S. glauca (Bunge) Bunge powder and extract demonstrated improved antioxidative activities.

• 공업화학
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• 제33권3호
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• pp.322-327
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• 2022

Fucoidans were degraded by hydrogen peroxide under the electron beam (2.5 MeV) with various radiation doses (5 kGy, 10 kGy, 15 kGy, and 20 kGy) at room temperature. The degradation property was analyzed with a gel permeation chromatography (GPC-MALLS) method. An average molecular weight of fucoidan decreased from 99,956 at the irradiation dose of 0 kGy to 6,725 at the irradiation dose of 20 kGy. The solution viscosity of fucoidans showed a similar pattern to the molecular weight change. The number of chain breaks per molecule (N) increased with increasing the irradiation dose and concentration of hydrogen peroxide. The radiation yield of scission value markedly increased with increasing the irradiation dose up to 15 kGy. Also a 10% hydrogen peroxide concentration was more efficient than that of 5%. The structures of degraded fucoidan samples were studied with Fourier transform infrared spectroscopy (FT-IR). The results showed that the degradation process did not significantly change the chemical structure or the content of sulfate group. The sulfur content of each sample was determined with an Elemental Analyzer. With increasing the concentration of hydrogen peroxide, the ratios of sulfur/carbon, hydrogen/carbon, and nitrogen/carbon slightly decreased. The antioxidant activities of fucoidans were investigated based on hydroxyl radical scavenging activities. The ability of fucoidan to inhibit the hydroxyl radical scavenging activity was depended on its molecular weight.

• 한국식품영양학회지
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• 제32권6호
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• pp.581-588
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• 2019

In this study, S. glauca (Bunge) Bunge extract was testified total polyphenol contents, electron donating ability on DPPH, and scavenging ability of superoxide anion radical and hydrogen peroxide. Total polyphenol contents of S. glauca (Bunge) Bunge extract were 7,053.30±915.93 ㎍ GAE/mL. In the fractions, fraction by ethanol was the highest content of 10,973.30±1,000.24 ㎍ GAE/mL. Fractions of ethyl acetate and water were 2,386.70±166.53 ㎍ GAE/mL, 2,413.30±41.63 ㎍ GAE/mL respectively. It was shown that total content of polyphenol according to solvent was significant relation at p<0.05. In the experiment of the electron donating ability, 70% ethanol extract and methylene chloride fraction were -246.15±24.17%, -254.01± 16.54% respectively. In case of ethyl acetate fraction, it was the highest electron donating ability to DPPH radical, 39.06±0.34%, and then water fraction of 36.71±5.55%, ethanol fraction of 29.77±2.57%, gradually. Electron donating abilities revealed significant difference (p<0.05) between the solvents. The superoxide radical scavenging ability of standard material was 0.029±0.0011; 70% ethanol extract of 0.022±0.00052, methylene chloride fraction of 0.027±0.00031, ethyl acetate fraction of 0.024±0.0011, ethanol fraction of 0.021±0.00024 and water fraction of 0.024±0.00019. Hydrogen peroxide scavenging ability of 70% ethanol extract was -0.0029±0.00040 and the others were as follow; methylene chloride fraction (-0.0042±0.00058), ethyl acetate fraction (-0.003± 0.0041), ethanol fraction (-0.0029±0.0015) and water fraction (-0.0028±0.00090).

• 한국식품영양학회지
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• 제31권6호
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• pp.775-782
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• 2018

The purpose of this study was to investigate effects of Crataegus pinnatifida var. psilosa extracts obtained from 95% methanol and water. Methylene chloride, ethyl acetate, and methanol were used to fractionate the 95% methanol extract and each fraction was testified total polyphenol contents, electron donating abilities, the scavenging abilities of superoxide anion radical, as well as hydrogen peroxide. Extraction yields of 95% methanol and water from Crataegus pinnatifida var. psilosa were 25.40%, 23.12% respectively. Total polyphenol contents were $28,708.0{\pm}1,755.05{\mu}g\;GAE/mL$ in 95% methanol, revealing the highest among them, $12,726.67{\pm}479.33{\mu}g\;GAE/mL$ in water extract, $15,854.67{\pm}498.38{\mu}g\;GAE/mL$ in methanol fraction, $11,810.67{\pm}584.48{\mu}g\;GAE/mL$ in ethyl acetate fraction, and $5294.67{\pm}190.36{\mu}g\;GAE/mL$ in methylene chloride fraction. Total polyphenol contents revealed significant differences (p<0.05) between the solvents. In the experiment of the electron donating ability, water extract revealed $84.33{\pm}0.1%$ scavenging ability, the highest. Other extracts and fractions were $81.8{\pm}1.11%$ for water, $79.73{\pm}1.32%$ for ethyl acetate fraction, $75.73{\pm}2.17%$ for methylene chloride fraction, and $42.1{\pm}5.01%$ for methanol fraction, the lowest electron donating ability. Electron donating abilities revealed significant difference (p<0.05) between the solvents. In the experiment of superoxide anion radical scavenging ability, ethyl acetate fraction($0.0026{\pm}0.0002$) had the highest scavenging ability, and the others revealed slight increase rather than decrease in scavenging ability. Hydrogen peroxide scavenging ability revealed the highest in methanol fraction ($-0.00206{\pm}0.00165$) and the others were as follow; water extract ($0.00157{\pm}0.00249$), 95.0% methanol extract ($0.005{\pm}0.0036$), methylene chloride fraction ($0.0039{\pm}0.00364$), and ethyl acetate fraction ($0.0002{\pm}0.00059$).

• 한국식품영양과학회지
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• 제34권9호
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• pp.1297-1301
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• 2005

활나물의 항산화 효과를 측정하기 위하여 잎, 줄기, 뿌리 및 종자의 부위 별로 분리하여 methylen chloride와 ethanol 혼합용매에 의해 추출하였다. 활나물의 부위로 추출수율은 줄기 $4.47\%$, 잎 $3.95\%$, 종자 $2.90\%$, 뿌리 $2.67\%$의 순으로 줄기 부분의 추출수율이 가장 높았다. 총 페놀성 화합물 함량은 잎 2.98, 뿌리 2.34, 종자 2.26, 줄기 2.11 mg/mL로 잎추출물에서 가장 높았다. SOD 유사활성은 잎 추출물의 활성이 $86.27\%$로 가장 높았으며, 줄기와 뿌리 추출물은 각각 56.32, $50.29\%$이었으며, 종자 추출물은 경우 $16.82\%$로 가장 낮았다. 잎, 줄기, 뿌리 추출물의 SOD 유사활성은 천연항산화제 인 tocopherol보다 매우 높았다. 활나물 부위별 추출물의 전자공여능은 잎과 줄기 추출물에서 각각 16.87, $16.06\%$로 매우 높았으며, 뿌리 추출물과 종자 추출물이 각각 11.13, $9.31\%$로 tocopherol $9.28\%$보다 높았다. 활나물 부위별 추출물에 대한 hydroxy radical 소거 활성은 잎 추출물에서 $42.90\%$로 가장 높게 나타났고, 줄기, 종자, 뿌리 추출물은 각각 41.03, 37.80, $37.62\%$이었으며, 천연항산화제 인 tocopherol $32.38\%$ 이 가장 낮은 결과를 보여주었다. 종자 추출물의 hydrogen radical 소거능이 $53.51\%$로 가장 높게 나타났으며, tocopherol의 $53.81\%$와 비슷한 활성 수준을 보여 주었다. 따라서 활나물 부위 별 추출물의 항산화 효과를 측정한 결과 잎 추출물이 가장 항산화 활성이 높았으며, 활나물은 천연항산화제로의 개발 가능성이 있음을 확인할 수 있었다.

• Advances in Traditional Medicine
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• 제5권3호
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• pp.209-215
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• 2005

This study was conducted to investigate the efficacy of antioxidative activity and nitrite scavenging ability of each fractions from Phyllostachys bambusoides S. et Z. (P. bambusoides) trunk ethanolic extract using reverse-phase flash chromatography. Among the each fractions, fraction 3 $(H_2O\;:\;MeOH\;=\;1:1)$ showed high DPPH free radical scavenging activity (81.33%) at $80\;{\mu}g/mL$ concentrations and strongly inhibited autooxidation of pyrogallol by superoxide dismutase-like activity (45.8 %) at 0.46 mg/mL concentrations compared with different fractions. The fraction 3 was also increased to 76.62% cell viability against hydrogen peroxide-mediated cytotoxicity. Nitrite scavenging ability was the most remarkable under pH 1.2 condition among various pH regions examined and effectively exhibited to 65.6% by treatment of the fraction 3 with a concentration of 0.2 mg/ml. In general, nitrite scavenging ability decreased with higher pH condition. These results suggest that fraction 3 from P. bambusoides ethanolic extract can be used for bioacitve and functional materials.

• 생명과학회지
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• 제20권8호
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• pp.1235-1240
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• 2010

천연물들은 현재까지 합성 항산화제들을 대체하기 위하여 많은 연구가 이뤄지고 있다. 본 연구에서는 천연 항산화제로서 화장품과 바이오산업에 적용하기 위해 정금나무 열매 70% 아세톤 추출물의 항산화능을 측정하였다. 정금나무 열매의 항산화능을 확인하기 위하여 폴리페놀의 함량을 측정, 전자공여능, $ABTS{\cdot}^+$, nitric oxide, hydrogen peroxide들의 소거 측정을 분석하여 다음과 같은 결과를 얻었다. 폴리페놀의 총 함량은 55.972 mg TAE/g로 정량 되었다. 전자공여능 실험에서는 농도 의존적으로 DPPH radical 소거능이 증가 하였으며 500 ${\mu}g/ml$에서 98% 이상의 활성을 나타내어 양성 대조군인 BHA의 활성을 초과하는 것을 알 수 있었다. $ABTS{\cdot}^+$에 대한 소거활성은 500 ${\mu}g/ml$에서 66.7%의 결과로 나타났고, nitric oxide radical 소거능은 100 ${\mu}g/ml$에서 57%의 활성을 나타내었다. 또한 정금나무 열매 70% 아세톤 추출물의 hydrogen peroxide의 소거활성은 50 ${\mu}g/ml$에서 정금나무 열매 추출물은 70% 이상의 활성을 나타났으며, BHA 보다 높은 활성을 나타내었다. 천연물의 산업화 가능성에 있어 가장 중요한 것은 재료의 영속적인 수급과 적은 농도를 첨가하여도 높은 효과를 나타내는지의 여부이다. 매년 수확이 가능한 정금나무 열매를 이용한 본 연구의 결과에서 열매의 항산화능 확인 및 화장품 등 바이오산업에 천연항산화제 원료로서의 적용 가능성을 확인할 수 있었다.

• Journal of Applied Biological Chemistry
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• 제54권2호
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• pp.89-93
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• 2011

오이풀 아세톤 추출물로부터 용매분획물의 기능성 화장품 소재로 활용하기 위하여 항산화 효과를 측정한 후 화장품 소재로서의 가능성을 검증하였다. 항산화 효과를 확인하기 위하여 electron donating ability을 측정한 결과 ethyl actate 층과 n-butyl alcohol 층이 전 농도에서 대조군 BHA와 유사한 활성을 나타내었으며, ABTS radical cation decolorization assay 결과 ethyl acetate 층, n-butyl alcohol 층, water 층 모두 전 농도에서 99% 이상의 효과를 나타내어 BHA와 유사하였다. hydrogen peroxide scavenging assay 결과 ethyl acetate 층, n-butyl alcohol 층이 대조군 ascorbic acid 보다 효과가 높았다. Superoxide dismutase (SOD) 유사 활성 측정 결과, n-butyl alcohol 층이 1,000 ${\mu}g/mL$ 농도에서 50% 이상의 효능이 있었으며, Superoxide anion 라디칼 소거능은 n-butyl alcohol 층의 1,000 ${\mu}g/mL$에서 45%의 효과가 있었다. 이상의 결과로 미루어 보아 오이풀 아세톤 추출물의 분획물 중 ethyl acetate 층과 n-butyl alcohol 층에서 항산화 효과가 있었으며, 새로운 항산화 화장품의 소재로서 가능성을 확인 할 수 있었다.

• 대한약침학회지
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• 제13권3호
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• pp.5-13
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• 2010

Reactive Oxygen Species(ROS) are continuously produced at a high rate as a by-product of aerobic metabolism. Since tissue damage by free radical increases with age, the reactive oxygen species(ROS) such as hydrogen peroxide($H_2O_2$), nitric oxide(NO). Several lines of evidence provided that ROS appears to cause to develop aging-related various diseases such as cancer, arthritis, cardiovascular disease. Our reserch objective was to examine the in vitro biological activity of Scolopendrid Pharmacopuncture, including the total poly-phenol content, DPPH radical scavenging, ABTS radical scavenging, Superoxide dismutase(SOD)-like activity, Nitrite scavenging ability. The total poly-phenol contents of Scolopendrid Pharmacopuncture was 35.859mg/L. Elctron donation ability on DPPH was 36.82%. The 2,2'-azinobis-3-ehtlbezothiazoline-6-sulfonic acid radical decolorization (ABTS) was 84.7%. The superoxide dismutase (SOD)-like activities of Scolopendrid Pharmacopuncture was 44.33%. The nitrite scavenging effects were pH dependent, and were highest at pH 1.5(45.2%) and lowest at pH 6.0(11.3%). We conclude that Scolopendrid Pharmacopuncture may be useful as potential sources of antioxidant.