• Preventive Nutrition and Food Science
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• 제13권2호
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• pp.61-65
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• 2008

To evaluate the effect of ground cherry extract on the activity of aniline hydroxylase, we gave ground cherry extract in doses of 100, 200 or 400 mg/kg i.p to mice for 1, 2 or 4 days. The aniline hydroxylase activity in the group treated with ground cherry extract increased in a dose dependant manner in all experimental groups compared with the control group, and was significantly higher in the group treated with ground cherry extract at a dose of 200 mg/kg, which also exhibited a time dependant increase over 4 days. Enzyzme kinetic analysis was performed for hepatic aniline hydroxylase activity in the group treated with 200 mg/kg for 4 days. There was no change of the Km values for aniline hydroxylase between the experimental group and the control group, but the Vmax values for aniline hydroxylase was 21% lower in the experimental group compared with the control. The experimental group also showed lower lipid peroxide and reduced glutathione content, and there were no significant difference in serum alanine aminotransferase activity between the experimental group and the control. Aniline was injected into both the experimental group mice treated with ground cherry extract at a dose of 200 mg/kg for 4 days and the control group, and then the level of blood aniline was assayed at 1hr. The level of blood aniline was lower in the experimental than the control group. This study suggests that ground cherry extract induces hepatic aniline hydroxylase activity and might accelerate the scavenging system of reactive oxygen species. It is likely that ground cherry extract influences the metabolism of xenobiotics by activating AH activity substituted for CYP2E1.

• Bulletin of the Korean Chemical Society
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• 제34권12호
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• pp.3825-3828
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• 2013

In this study, the influences of aniline to acid composition were investigated on the electrical conductivity of PANI-PAAMPSA. The ratio of aniline to sulfonic acid groups was optimized for the maximum conductivity of PANI-PAAMPSA. The conductivity is strongly correlated with the electronic structure of PANI-PAAMPSA; the highest conductivity of PANI-PAAMPSA was observed when PANI has the longest conjugation length.

• 대한화학회지
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• 제55권2호
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• pp.308-312
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• 2011

• 대한화학회지
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• 제32권5호
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• pp.409-415
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• 1988

In this study, an aniline modified Bakelite-A resine was synthesized by polymerizing phenol, formaldehyde and aniline. Structural properties of the polymer were examined by IR spectroscopy, elemental analysis and vapour pressure osmometry. By visible spectroscopy, it was found that nitrogens of amine groups in the polymer are strongly coordinated to Ni(Ⅱ). Also a nitrate ion-selective PVC membrane electrode based on the polymer-Ni(Ⅱ) complex as ion carrier was preparaed. The electrode gave a linear response with a Nernstian slope within the concentration range $10^{-1}$ M∼$10^{-4}$M $KNO_3$.

• 유변학
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• 제11권2호
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• pp.91-96
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• 1999

반전도성 polyaniline의 유도체들로서 poly(aniline-co-sodium diphenylamine sulfonate), poly(aniline-co-o-ethoxyaniline), poly(o-methylaniline), poly(o-methoxyaniline)를 중합하여 전기유변유체의 입자로 사용하였다. 각 분산액은 전기장하에서 전형적인 전기유변특성을 나타냈으나, 낮은 전단변형률에서의 stress plateau 영역에서 입자의 종류에 따라 다른 흐름특성을 얻었다. 전기유변유체의 전기장에 따른 flow curve 변화와. dynamic yield stress와 전기장 간의 관계로부터 접근한 scaling law를 이용하여 각 전기유변유체의 universal flow curve를 구하였다.

• 한국식품영양과학회지
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• 제20권6호
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• pp.527-537
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• 1991

To evaluate an effect of liver xanthine oxidase on the induction of liver damage, carbon tetrachloride (CCl4) was intraperitoneally injected twice at 0.1ml/100g body weight to the rate fed a low (LP)or high protein diet(HP) while the control group fed LP or HP received only olive oil. The changing rate of liver xanthine oxidas activity was compared with that of a free radical generating enzyme, liver aniline hydroxylase and a scavenging enzyme, glutathions S-transferase activity between the rate fed a LP and those fed HP, and the two groups treated with CCl4. Concomitantly, the degree of liver damage which could be considered as the paramete for CCl4 metabolism in case of CCl4-intoxicated animal was observed in the present experimental conditions and the effect of allopurinol, xanthine oxidase inhibitor, on the CCl4-toxicity of rate liver was alos demostrated. On the other hand, the comparative effect of actinomycin D on the liver and serum xanthine oxidase of CCl4-treated rats fed HP with that of those fed LP and the kinetics of purifed liver enzyme from the liver of CCl4-treated rats fed HP was also compared with that of those fed LP to clarify the differences of xanthine oxidase activity between two groups. The increasing rate of liver weigth/body wt, serum levels of ALT and the decreasing rate of hepatic ALT activity and protein contents to each control group were higher in CCl4-treated rats fed HP than those fed LP. Under the animal models as indentified by the present data herein, the liver xanthine oxidase activity was higher in CCl4-treated rats fed HP than those fed LP, and the control group fed HP also showed the much higher activity xanthine oxidase than that fed LP, whereas there were no differences in the activity of hepatic aniline hydroxylase and glutathions S-transferase between the two group treated with CCl4. Although the hepatic aniline hydroxylase activity was somewhat higher in the rats fed HP than those fed LP, the increasing rate of liver xanthine oxidase to the rats fed LP was higher in those fed HP than that of liver aniline hydroxylase. The degree of liver damage identified such as liver weight and serum ALT activity was less in the CCl4-treated rats pretreated with allopurinol. These results suggest that even a system at which xanthine oxidase acts as well as the drug metabolizing enzyme may influence the acelatin of CCl4 metabolism. In addition, the purified liver xanthine oxidase from CCl4-treated rats fed HP showed decreased Km value when compared to its control group. The Km value of liver xanthine oxidase of CCl4-treated rats fed LP showed a similar Km value with its control group. Furthermore, the decreasing rate of liver and serum xanthine oxidase acitivity in CCl4-treated rats pretreated with actinomycin D to the CCl4-treated rats was higher in rats fed HP than in those fed LP. These results suggest that the inductino of xanthine oxidase in CCl4-treated rats fed HP may be greater than in those fed LP.

• 한국동물학회지
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• 제12권3호
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• pp.69-76
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• 1969

1. 10種染料 (neutral red, toluidine blue, pyronin, methylene blue, alcian blue, trypan blue, carmine, orange G, aniline blue, Janus green B, and India ink)로 處理된 흰쥐의 腹腔內細胞 特히 肥滿細胞의 식作用 및 複屈折性의 有無를 位相差顯微鏡法 및 偏光顯微鏡法으로 分析하였으며 附隨的으로 cytomorphic change 도 觀察하였다. 2. 腹腔內 肥滿細胞는 大部分 染料에 對하여 아무런 식作用을 보이지 않았으며 India ink 群에서 輕微한 식作用을 보였다. 大식細胞와 各種 白血球는 大體로 旺盛한 식作用을 나타내었다. 3. 腹腔內 肥滿細胞는 大部分의 染料를 處理하여도 아무런 複屈折性을 보이지 않았으며 trypan blue 와 aniline blue 處理群에서 매우 輕微한 反應을 보였을 뿐이었으며 白血球는 全然 反應을 보이지 않았다. 4. 各種染料에 對한 肥滿細胞의 細胞形態學的 反應은 一定하지 않았으며 大體로 輕微한 變化를 일으켰다. 白血球의 同染料에 對한 反應은 特히 trypan blue, orange G, India ink群에 서 顯著하였다.

• 대한화학회지
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• 제9권4호
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• pp.185-189
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• 1965

韓國産 酸性白土類 및 silica gel을 aniline yellow, o-nitro aniline, oil orange 色素 benzene 溶液과 작용시켜 非水溶液에서의 色素吸着率을 측정하였다. 그 吸着率은 silica gel이 酸性白土類보다 컸으며 酸性度에는 무관하였다. 또 上記 色素溶液에 각 10%의 添加溶劑 amine, alcohol, halogen類 化合物등을 加하여 高體酸의 色素吸着率의 변화(吸着阻害率)에 대하여 조사한 결과 위에 적은 順으로 그 영향이 적어지고, 同族體에서는 分子量이 적을 수록 그 영향이 커짐을 알았다. 따라서 非水溶液에서의 吸着은 amine基, 水酸基등과 같은 陰性基를 갖는 化合物은 選擇吸着하고 界面張力에 무관계하여 Traulbe系列의 逆轉現象을 나타내었다. 그 逆轉現象(吸着潮害現象)은 그 順位가 添加溶制의 雙極子能率과 대체적으로 일치하는 것으로 보아 固體酸模體인 活性硅酸과 被吸着體사이의 極盛的化學吸着에 의한 것이라 推定된다. 本實驗結果로부터 固體酸의 非水溶液에서의 吸着메카니즘, Traube 系列의 逆轉現象에 관하여 考察하게 되었다.

• 폴리머
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• 제34권6호
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• pp.553-559
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• 2010

The paper describes the preparation and characterization of conductive polyaniline-modified polymers by growing of aniline onto functionalized poly(styrene-co-p-methylstyrene) [P(St-co-MSt)]. For this purpose, P(St-co-MSt) was synthesized via nitroxide mediated radical polymerization (NMRP) and then N-boromosuccinimide was used for introduction of bromine to the benzylic positions of copolymer. Afterwards, 1,4-phenylenediamine was linked to the brominated P(St-co-MSt) and functionalized copolymer $[P(St-co-MSt)-NH_2]$ was prepared. The graft copolymerization of aniline monomers onto functionalized P(St-co-MSt) was initiated by oxidized phenylamine groups after addition of ammonium peroxydisulfate (APS), and p-toluenesulfonic acid-doped PANI was chemically grafted onto P(St-co-MSt) via oxidation polymerization. The obtained terpolymer was studied by FTIR and UV-Vis spectroscopy and its thermal behaviour were examined by DSC and TGA analyses. The conductivity of terpolymer was measured by four-point probe method and electroactivity was measured by cyclic voltammetry (CV). The solubility of P(St-co-MSt)-g-PANI was examined in common organic solvents.

• 폴리머
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• 제24권5호
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• pp.673-681
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• 2000

플라즈마 처리가 나일론 6 직물의 표면 특성과 폴리아닐린/나일론 6 복합직물의 전도도에 미치는 영향을 연구하였다. 산소 플라즈마로 처리한 나일론 6 직물의 표면을 XPS 분석을 통해 확인한 결과 C-O, C-OH 등의 관능기가 도입되었으며, 이는 직물과 폴리아닐린의 결합력을 향상시켜 전기 전도도와 폴리아닐린 부착량을 증가시켰다. 또한 산소 플라즈마로 처리된 폴리아닐린/나일론 6 복합직물은 세탁과 마모에서도 우수한 안정성을 나타내었다. 초음파 처리는 매질에 발생된 cavitation과 진동에 의해 직물 내부로 아닐린을 확산시키는데 효과적이었으며, 이는 폴리아닐린/나일론 6 복합직물의 전기 전도도를 크게 향상시켰다. 아닐린의 농도와 중합욕에 침지 휫수가 증가함에 따라 전기 전도도와 복합직물의 형태안정성에 대한 영향을 살펴보았는데, 단량체 농도는 0.5M 까지는 증가함에 따라 전도도가 향상되었으며, 침지 횟수가 증가함에 따라서도 전도도가 향상되었다.