• Title, Summary, Keyword: nitrite scavenging effect

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Determination of Nitrite-scavenging Activity of Seaweed (해조류에 의한 아질산염 소거활성 분석-연구노트-)

  • Park, Yeung-Beom
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.34 no.8
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    • pp.1293-1296
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    • 2005
  • Nitrite plays an important role in the formation of carcinogenic nitrosamine. In order to effectively inhibit the formation of carcinogenic nitrosamine in food and biological systems, scavenging of residual nitrite is necessary. In screening test of nitrite-scavenging effect of seaweed, The methanol extract from Phaeophyta was more effective than those from Rhodophyta and Chlorophyta. Among the brown algae family, Laminariaceae, A. cribrosum (90.4$\%$) and E. cava (80.1$\%$), E. stolonifera (79.0$\%$) that belong to genus Ecklonia showed marked nitrite-scavenging effect at pH 1.2. Furthermore, these algae showed potent reducing power and radical scavenging activity. The nitrite-scavenging effect was correlated with level of reducing power.

Antioxidative Activities and Nitrite-scavenging Abilities of Some Phenolic Compounds (일부 페놀성 화합물의 항산화효과 및 아질산염 소거능)

  • Ahn, Sun-Il;Bok, Jin-Heuing;Son, Jong-Youn
    • Korean journal of food and cookery science
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    • v.23 no.1
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    • pp.19-24
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    • 2007
  • This study investigated the antioxidant and synergistic effects and nitrite scavenging ability of some phenolic compounds(catechin, rutin, quercetin and naringin), The electron donating abilities of naringin, quercetin, rutin and catechin were 6.7%, 92.8%, 87.6% and 92.21%, respectively, The antioxidant activities in O/W emulsion substrates were in order of rutin > quercetin > catechin > naringin. The antioxidant effect of rutin was stranger than that of BHT or ${\alpha}$-tocopherol. ${\alpha}$-tocopherol showed synergistic effect with catechin and quercetin, but ascorbic acid not showed effect. The nitrite scavenging abilities of catechin, quercetin, rutin and naringin were 99.9%, 98.6%, 25.5% and 0.2%, respectively. The nitrite scavenging abilities of quercetin and actechin were very potent as compared with those of BHT and ascorbic acid.

The Screening of Nitrite Scavenging Effect of Marine, Algae and Active Principles of Ecklonia Stolonifera

  • CHOI Jae Sue;LEE Ji Hyeon;JUNG Jee Hyung
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.30 no.6
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    • pp.909-915
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    • 1997
  • The nitrite scavenging effect of methanol extracts of marine algae were evaluated to discover new natural nitrite scavengers. Among the tested seaweeds, Ecklonia stolonifera, an edible brown algae, showed the strongest scavenging effect. The MeOH extract was then sequentially partitioned into $CH_2Cl_2,\;CH_2Cl_2$ insoluble interface, EtOAc, n-BuOH, and $H_2O$ layers. The EtOAc and n-BuOH fraction demonstrated high levels of nitrite-scavenging activity while the $CH_2Cl_2,\;CH_2Cl_2$ insoluble interface, and $H_2O$ fractions were inactive. A column chromatography of the EtOAc fraction through silica gel and Sephadex LH-20 yielded phloroglucinol and a new compound tentatively named phlorotannin A. The nitrite scavenging activity of phloroglucinol $(IC_{50}=3.9{\mu}g/ml)$ was more potent than that of L-ascorbic acid $(IC_{50}=65.0{\mu}g/ml)$. However, phlorotannin A $(IC_{50}=193.2{\mu}g/ml)$ showed only low levels of activity. From the above results, it is possible to suggest that both the MeOH extract and their fractions and isolated phloroglucinol and phlorotannin A obtained from E. stolonifera may be applicable as scavengers of nitrite, which is a precursor for the formation of carcinogenic N-nitroso compounds.

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Nitrite Scavenging Effect of Methaol Fraction Obtained from Green Yellow Vegetable Juices (녹즙추출물의 아질산염 소거능에 대한 연구)

  • Chung, So-Yong;Kim, Nak-Kyung;Yoon, Sun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.2
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    • pp.342-347
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    • 1999
  • The objectives of this study were to investigate biological activities such as nitrite scavenging effect of water and methanol fractions obtained from each green juice(Angelica keiskei, kale, carrot) under different pH conditions, and antioxidant vitamin contents in green juice made of green yellow vegetables. The result shows that nitrite scavenging effect of each green juice was 14.0~91.2% in model system. The methanol fraction provided higher effect than the water fraction. The nitrite degradation was the highest at pH 1.2. Nitrite scavenging effect of methanol fraction obtained from kale juice was 91.2% at pH 1.2 which was the highest among tested samples in this experiments. Consequently, extracts of kale juice were shown to provide the greatest functional properties among the vegetables tested. Contents of vitamine E and C in the extracts of kale were higher than the others.

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Nitrite Scavenging Effect of Umbelliferaeceae (미나리과 산채의 아질산염 소거능)

  • 노광석;양미옥;조은자
    • Korean journal of food and cookery science
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    • v.18 no.1
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    • pp.8-12
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    • 2002
  • The nitrite scavenging effect of three kinds of edible wild plants belong to Umbelliferaeceae family was investigated. The contents of crude protein, crude lipid and $\beta$-carotene of the plants were in the range of 22.99∼31.00%, 3.51∼5.08% and 5.40∼19.81 mg%, respectively. The content of ascorbic acid was very low and selenium was not detected in any samples. The contents of linoleic acid and linolenic acid were 66.46∼77.44%. The content of total phenol was 875.77 mg% in Ledebouriella seseloides WOLFF, which was the highest among the samples. The methanol fraction of the plant extract showed higher nitrite scavenging effect than the water fraction. The nitrite scavenging effects of the samples were the highest at pH 1.2 and lowest at pH 6.0, suggesting that it's pH dependent. Nitrite scavenging effect of methnol-soluble fractions obtained from Ledebouriella seseloides WOLFF was 95.3% at pH 1.2, which was the greatest among tested samples. There was a high correlation between the nitrite scavenging effect and the total phenol content.

Nitrite Scavenging Effect by Flavonoids and Its Structure-Effect Relationship

  • Choi, Jae-Sue;Park, Si-Hyang;Choi, Jin-Ho
    • Archives of Pharmacal Research
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    • v.12 no.1
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    • pp.26-33
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    • 1989
  • Nineteen flavonoids, five phenolics, two coumarins, maltol and L-ascorbic acid were tested as scavenger of nitrite which is believed to participate in the formation of N-nitroso compounds. Many were found to be potent scavenger and the five most potent ones were (+)-catechin, (-)-epicatechin, phloroglucinol, caffeic acid and L-ascorbic acid. The nitrite scavenging effect was higher at pH 1.2 than pH 3.0 and increased when the incubation time was longer. The possible relationship of structures to scavenging effect of the flavonoids tested was discussed.

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Antioxidant and Nitrite Scavenging Effect of Soybean, Meju and Doenjang (대두, 메주 및 된장의 항산화 효과와 아질산염 소거 효과)

  • 최계선;임선영;최재수
    • Journal of Life Science
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    • v.8 no.5
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    • pp.473-478
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    • 1998
  • The radical scavenging activity of the methanol extracts was in the order of doenjang〉 meju〉 soybean. The metha-nol extracts were further fractionated with dichloromethane, ethyl acetate, butanol and water in sequence. Among the solvent fractions of the methanol extracts, the ethyl acetate fraction demonstrated high levels of radical scave-nging activity. On the other hands, the nitrite scavenging activity of the methanol extrats was in the order of doen-jang〉soybean〉meju. All fractions from doenjang were exhibited the strong nitrite scavenging effect. Especially, $H_2O$, EtOAc and BuOH fractions with 6gmg/10$m\ell$ concentration exhibited much stronger nitrite scavenging effect than that of L-ascorbic acid. The ethyl acetate fraction showed remarkable antioxidant and nitrite scavenging effects compared with the other fractions obtained from soybean, meju and doenjang. The ethyl acetate fraction of doenjang was fur-ther purified by repeated chromoatograpic methods and isolated three compounds. There are identified as genistin, dai-dzein and genistein on the basis of spectral data.

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Comparison of Antioxidant and Nitrite Scavenging Activities of Different Colored Kiwis Cultivated in Korea (국내산 키위의 색상별 항산화능 및 아질산염 소거능 비교)

  • Chung, Hai-Jung;Kim, Cheon-Jei;Choi, Yun-Sang
    • Journal of the Korean Society of Food Culture
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    • v.30 no.2
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    • pp.220-226
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    • 2015
  • This study was to conducted to investigate the antioxidative activity of 70% ethanol extracts of kiwi of three different colors (gold, green and red) by measuring DPPH, ABTS radical scavenging activity, tyrosinase inhibitory effect, metal chelating effect, reducing power, and nitrite scavenging activity. Total polyphenol contents were: gold kiwi, 3.09 mg GAE/g, green kiwi 2.71 mg GAE/g, and red kiwi 4.59 mg GAE/g, respectively. Red kiwi showed higher antioxdidant activity than gold and green kiwi. DPPH and ABTS radical scavenging activity, and nitrite scavenging activity of red kiwi exhibited 94.83, 99.57, and 97.88%, respectively, at a concentration of 20 mg/mL, which were equal to those of ascorbic acid (positive control). Metal chelating effect of red kiwi was superior to that of ascorbic acid. Therefore, the availability of red kiwi will be increased in the field of functional material for food additives and value added products.

Antioxidative and Nitrite-scavenging Effects of Solvent Extracts from Gyrophora esculenta (석이버섯 용매 추출물의 항산화 및 아질산염 소거작용)

  • 정은재
    • The Korean Journal of Food And Nutrition
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    • v.11 no.4
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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.

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Inhibitory Effect on Tyrosinase and Xanthine Oxidase, and Nitrite Scavenging Activities of Schizandrae Fructus Extract by Gamma Irradiation (감마선 조사한 오미자 추출물의 아질산염 소거능, Tyrosinase와 Xanthine Oxidase 저해 효과)

  • 전태욱;조철훈;김기혁;변명우
    • Korean Journal of Food Preservation
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    • v.9 no.4
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    • pp.369-374
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    • 2002
  • This study was performed to investigate the effects of tyrosinase inhibition, xanthine oxidase inhibition and nitrite-scavenging effects of gamma-irradiated Schizandrae Fructus extracts from different solvents. Schizandrae Fructus was extracted by hot water, ethanol, acetone and methanol, and the extracts were irradiated 10, 20 and 30 kGy with gamma rays. All extracts from Schizandrae Fructus showed inhibition effect against tyrosinase. Tyrosinase inhibition effect of Schizandrae Fructus were higher in solvent extracts than hot water extracts by irradiation. The Schizandrae Fructus extracts had a higher inhibitory effect against xanthine oxidase, and the effect was not changed by irradiation. Nitrite scavenging activity, which was measured at various pH conditions (1.2, 3.0, 6.0), was the highest in Schizandrae Fructus extracts at pH 1.2 and 3.0. Hot water extracts provided higher nitrite scavenging effect than those of the methanol, ethanol and acetone extracts. Gamma-Irradiation may not influence on biological activites of the extracts when irradiated up to 30 kGy.