• 한국식품과학회지
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• 제36권2호
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• pp.306-310
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• 2004

본 연구는 왕대나무 줄기의 생리황성 및 기능성을 검토하기 위해서 왕대나무 줄기를 에탄올로 추출하여, 추출물의 항산화 효과와 아질산염 소거능을 측정하였다. 그 결과, 왕대나무 줄기 에탄올 추출물의 전자공여능($RC_{50}$)은 $116.75\;{\mu}g/mL$로 나타났고 SOD 유사활성은 추출물(0.92 mg/mL)을 첨가하였을 때 43.88%로 가장 높게 관찰되었으며, linoleic acid에 대한 항산화력은 추출물($50\;{\mu}g/mL$)을 첨가하여 TBA값을 측정한 결과 배양시간 4일과 6일 경과 후 각각 74.76%, 54.48% 감소율을 보임으로써 효과적인 항산화 효과를 나타내었다. 아질산염 소거능은 추출물(0.2 mg/mL)을 첨가하였을 때 pH 1.2 조건에서 43.02%로 가장 높게 나타났으며 pH가 증가할수록 감소하였다. 이상의 결과를 종합하면 왕대나무 줄기의 에탄올 추출물은 항산화 효과와 아질산염 소거능이 있는 물질을 함유한 것으로 판단된다. 추후, 왕대나무의 항산화 효과와 아질산염 소거능을 나타내는 원인물질에 대한 연구가 진행되어야 할 것이다.

• 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.

• 한국식품영양과학회지
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• 제29권5호
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• pp.943-947
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• 2000

The purpose of this study was to investigate the extraction method of phenolic compounds from Rubus coreanum and antioxidative activity. antioxidative activities of Rubus coreanum were tested with ability of donating hydrogen to DPPH, and HPLC, fluorometry which measure the amount of MDA after reacting linoleic acid with $H_2O$$_2$, and LDL with $H_2O$$_2$ and FeCl$_2$. The most suitable extraction conditions of the phenolic compounds from Rubus coreanum was 3 times with 60% ethanol, and the yield of extract containing 35% moisture was 15.28%. In extraction efficacy of phenolic compounds, 60% ethanol was superior to water as extraction solvent, and extraction efficacy with 60% ethanol did not differ from disolving by water after evaporation of 60% ethanol extract. 60% ethanol extract of Rubus coreanum had an ability of hydrogen donating to DPPH, MDA determination showed the antioxidative effect with inhibition ratio of 77.91% on linoleic acid oxidation by addition of Rubus coreanum extract with the concentration of 1.500 ppm. and about 65.74% of LDL oxidation was inhibited by addition of 1,000 ppm.

• 한국식품영양과학회지
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• 제29권2호
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• pp.349-355
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• 2000

Onion was extracted by methyl alcohol and some physiological activities and antioxidative effect of the extracts on soybean oil, corn oil, lard and shortening were compared with commercial antioxidants such as $\alpha$-tocopherol and BHT. The electron donating ability was about 70% at concentration above of 30mg/mL. Nitrite scavenging effects of all concentrations diminished at higher pH, while in the case of pH 1.2, it showed a nitrite scavenging effect of more than 80% af concentration above of 30mg/mL. And also, the angiotensin I-converting enzyme inhibitory effect was good above 80%. The soybean oil, corn oil, lard and shortening containing different levels of the onion extract were stored at 6$0^{\circ}C$ to evaluate the antioxidative activity of onion extracts. Peroxide value, acid value and TBA value of each oil were detected. Onion extract was very effective to retard oxidation of soybean oil, corn oil and lard, and especially, the very high antioxidative effect was observed for lard.

• 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).

• 동아시아식생활학회지
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• 제12권6호
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• pp.566-573
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• 2002

In order to obtain the basic data fer the processing adaptability of Korean figs(Ficus carica L.), physicochemical analyses were carried out with Korean common type figs in the different ripening stages. Moisture contents decreased, but the contents of protein, fat carbohydrate and soluble solids increased according to the ripening of fruits. K was detected as the most abundant one of all the minerals and Ca, Mg, Na, Fe, Mn, Zn and Cu were the next in order. The mineral contents decreased slightly with ripening. Especially, Ca, Mg, U, Fe and Zn were higher in the unripened H stage figs. The antioxidative activity was assayed with water and methanol extracts from ripened figs by the DPPH radical scavenging ability. The antioxidative activities of Korean figs were relatively high and increased in a dose dependent manner. The methanol extract showed the higher antioxidative activity than the water one. Therefore, the methanol was the better solvent than water for the antioxidative compounds. These results suggested that Korean figs are relatively the good sources of minerals, especially the Ca and the antioxidative compounds.

• 한국식품영양학회지
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• 제34권5호
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• pp.537-544
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• 2021

In this study, antioxidative activities of Jeolpyun containing Smilacis chinae R. extract powder (2%, 4%, 6%, 8%) were evaluated using total polyphenol contents, electron donating ability on 2,2-diphenyl-1-picrylhydrazyl (DPPH) and decomposing ability of hydrogen peroxide. In chromaticity analysis, the brightness significantly decreased with increasing Smilacis chinae R. extract powder content. Jeolpyun containing 6% Smilacis chinae R. extract powder revealed the highest value (9.67±0.603) for the redness and 2% Smilacis chinae R. extract powder was the highest value (14.20±0.917) for the yellowness. Total polyphenol contents of Jeolpyun containing 8% Smilacis chinae R. extract powder were the highest content of 17,320±390.38 ㎍ gallic acid equivalent/mL (GAE/mL). Total polyphenol contents were significant relation at p<0.05. Electron donating ability for Jeolpyun containing 8% Smilacis chinae R. extract powder revealed the highest electron donating ability (74.24±0.827%). Electron donating abilities revealed significant difference (p<0.05). Jeolpyun containing 6% Smilacis chinae R. extract powder revealed the most hydrogen peroxide decomposing ability (-3.38±1.44) and hydrogen peroxide decomposing ability revealed significant difference (p<0.05).

• 한국축산식품학회지
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• 제23권2호
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• pp.186-192
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• 2003

최근 항산화제 연구는 식품, 의약품, 농업분야 등 다방면에서 이용될 수 있기 때문에 많은 산업적 효과를 기대할 수 있다. 특히 지금까지 알려진 항산화제가 약한 활성, 독성 및 사용상의 한계로 인하여 사용하는데 있어서 많은 문제점을 내포하고 있다. 따라서 천연으로부터 보다 안전하고 강한 활성을 지닌 천연항산화제의 개발이 요구된다. 활성산소 제거능력이 향상된 유산균은 식품산업에 중요하며 인간 장내 외인성, 내인성 산화적 스트레스 제거에 중요하다고 생각된다. 따라서 유산균을 이용한 항산화제의 고부가가치 창출을 위해서는 생물학적 기능연구 및 질병모델계에서의 효능평가가 이루어져야 하며 항산화제의 효능검정 및 항산화제 작용 메커니즘 등 다양한 방면의 연구가 병행되어야 할 것으로 생각된다

• 한국식품영양과학회지
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• 제32권6호
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• pp.948-951
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• 2003

흑미(수원 415호)의 페놀화합물을 유리형과 결합형으로 분리하여 추출한 결과, 시료 100 g당 각각 845.4 및 401.6 mg 으로서 유리형 페놀화합물이 결합형보다 2배 이상 함량이 높았으며 항산화활성도 우수하였다. 유리형 페놀화합물을 용매 분획하여 각 분획의 페놀화합물 함량과 항산화활성을 측정한 결과, butanol 분획에서 가장 높은 페놀화합물 함량과 항산화활성이 관찰되었다. EDA, LPI 및 BAHI방법으로 butanol 분획의 항산화활성을 측정한 결과, butanol 분획의 hydroxy 라디칼 소거능력은 대조군으로 사용한 BHT와 $\alpha$-tocopherol보다는 우수하였으나, linoleic acid를 기질로 한 과산화물 생성억제능은 낮은 것으로 조사되었다. 또한 DPPH 라디칼 소거능의 경우, butanol 분획은 $\alpha$-tocopherol보다는 2배 이상 높았으나 BHT보다는 다소 떨어지는 것으로 나타났다. 따라서 흑미 페놀화합물의 항산화기작은 라디칼 소거작용에 기인하는 것이며 산화의 중간 단계의 과산화물 생성 억제력은 낮은 것으로 사료된다.

• 한국식품영양학회지
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• 제11권4호
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• pp.426-430
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• 1998

This study was conducted to investigate electron donating ability, antioxdative activity and nitrite-scavenging effect of solvent extracts from Gyrophora esculenta. The phenolic compounds of diethylether, butanol, petroleum ether and hexane extracts were 194.20$\mu\textrm{g}$/ml, 98.80$\mu\textrm{g}$/ml, 1.60$\mu\textrm{g}$/ml and 0.20$\mu\textrm{g}$/ml, respectively. Electron donating abilities of diethyleter and butanol extracts from Gyrophora esculaenta were 80.79% and 72.81%, respectively. Absorption of DPPH by diethyleter and butanol extracts sharply increaed at initial stage. Antioxidative activities of fiethylether and butanol extracts by peroxide values are rather high as compared to those of control, but low s compared to those of BHA. Nitrite-scavenging abilities of diethylether, butanol and petroleum ether from Gyrophora esculenta were 96.07%, 77.39% and 15.07%, respectively.