油化学
Online ISSN : 1884-2003
ISSN-L : 0513-398X
32 巻 , 7 号
選択された号の論文の9件中1~9を表示しています
  • 大城 芳樹, 平尾 俊一
    1983 年 32 巻 7 号 p. 355-360
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
  • 中津川 研一, 金田 尚志
    1983 年 32 巻 7 号 p. 361-366
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    ラットを用い, リノール酸メチルヒドロペルオキシド (MLHPs) の小腸における吸収と代謝を検討した。15mgのMLHPsを経口投与後, 胸管リンパ管から, 12hごとのフラクションに分け36hにわたりリンパ液を採取した。対照のラットには15mgのリノール酸メチルを与え同様の操作を行った。集めたリンパ液から脂質を抽出し逆相高速液体クロマトグラフィーで分析した。
    その結果, 投与したMLHPsのうち0.5~0.6%が未変化のまま小腸から吸収されるのを始め, ヒドロキシオクタデカジエン酸メチルやオクソオクタデカジエン酸メチルといった誘導体に代謝され, 小腸から吸収されることが明らかとなった。
  • 高木 徹, 板橋 豊, 金庭 正樹, 水上 眞弓
    1983 年 32 巻 7 号 p. 367-374
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    きんぽうげ科に属するおだまき三種とひえんそう, くろたねそうの種子脂質の脂肪酸を毛細管GLCで分析した。おだまきは異常な脂肪酸としてt5, c9, c12-18 : 3 (t; trans, c; cis) (中性脂質で56~59%, 極性脂質で35~40%), t5, c9-18 : 2 (0.5~1.6%) と1%以下のt5-16 : 1, t5-18 : 1, t5, c9, c12, c15-18 : 4を含有した。ひえんそう, くろたねそうには, これらの酸は検出されなかった。共通に存在する通常の脂肪酸としては, 主要成分として16 : 0, c9-18 : 1, c9, c12-18 : 2, 少量成分として14 : 0, 15 : 0, c9-16 : 1, 18 : 0, c11-18 : 1, c9, c12, c15-18 : 3, c11-20 : 1, c11, c14-20 : 2が認められた。異常脂肪酸の構造はヒドラジン部分水素添加物のGLC, 13C-NMRで求めた。おだまき種子脂肪酸組成は発芽により一部変化した。
  • 西沢 和夫, 山崎 音松, 大沢 潤
    1983 年 32 巻 7 号 p. 375-380
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    We built as a trial an automatic measuring system of acid values of different varnishes, which can be used in a factory to decrease errors by a manual handling and simplify a titration work.
    A change in colour with phenolphthalein at the end point of titration is read out as a change of voltage and the total volume of titrant is converted into the voltage by the operating circuit.
    Acid values of benzoic acid, fatty acids, and alkyd varnishes were measured by our system and obtained results are more accurate than results by a manual method in the coefficient of variation.
  • 小山内 州一, 湯原 尚一郎, 阿部 芳郎
    1983 年 32 巻 7 号 p. 381-384
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    Amphoteric surface active N-substituted amino acid derivatives containing long chain alkoxyl radicals and the methylmethylene, ethylene, and methylethylene radicals between amino and carboxyl groups were prepared, then their antimicrobial properties against G. positive, G. negative bacilli and fungi were determined. It was confirmed that N-substituted β-alanine derivatives showed higher antimicrobial properties than the corresponding α-alanine derivatives. The effect of side methyl group between an ammonium and a carboxylate radical was not clear.
    The surface tension of the N-substituted β-alanine aqueous solution was about 3035dyn/cm in the pH range from 3 to 11.
  • 佐藤 孝俊, 斎藤 好廣, 穴沢 一郎
    1983 年 32 巻 7 号 p. 385-388
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    The effects of micellar structure on the oxidation of p-isopropyl benzaldehyde (PBA) in aqueous solutions of the nonionic surfactants were investigated. The micellar aggregation number was determined with a low-angle light-scattering photometer while the determination of micellar shape and volume were made by measuring viscosity.
    The summary of the results is shown below.
    1) The micellar aggregation number decreased with the increase in the oxyethylene chain length of the nonionic surfactants.
    2) The micelle was spherical and the micellar volume remained approximately the same regardless of the oxyethylene chain length of the nonionic surfactants.
    3) The binding site of PBA within micelles was the core of any of the nonionic surfactants.
    4) The oxidation of PBA in the micellar system was inhibited with the increase in the oxyethylene chain length of the nonionic surfactants.
    Since the micellar core having a few aggregation number had a few hydrocarbon chain, the hydrophobic bond between oxygen and hydrocarbon decreased. Consequently, it was presumed that the oxygen concentration of such micellar cores was low.
    From these results, the oxidation of PBA was inhibited with the increase in the oxyethylene chain length of the nonionic surfactants, this reason was thought to be due to the solubilization of PBA in the core having a lower oxygen concentration.
  • 渡辺 昭次, 藤田 力, 須賀 恭一, 桝村 聡, 浜谷 芳樹, 三春 憲治
    1983 年 32 巻 7 号 p. 389-392
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    Artemisia ketone and its related compounds were prepared from alkenylmagnesium chloride and lower carboxylic acids. By the reaction of 2, 2-dimethyl-3-butenoic acid and methallylmagnesium chloride, isoartemisia ketone was obtained in yield of 28%. Isomerization of isoartemisia ketone with p-toluenesulfonic acid gave artemisia ketone in yield of 84%. Similarly, 2, 5, 5, 8-tetramethyl-1, 7-nonadien-4-one was prepared from 2, 2, 5-trimethyl-4-hexenoic acid. (±) -ar-Turmerone was obtained from 3- (p-methylphenyl) butyric acid in the similar manner.
  • 国枝 博信
    1983 年 32 巻 7 号 p. 393-396
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    Phase behavior of three coexisting phases, i.e., surfactant, water and oil phases has been studied in pseudo four-component system of C8H17SO3Na/octanol/brine/2, 2, 4 trimethylpentane. Assuming that 1) most of surfactant is dissolved in a surfactant phase, 2) cosurfactant (octanol) is distributed among surfactant and oil phases, 3) brine is regarded as one component, a simple method to determine the plane of the three-phase triangle in a composition tetrahedron of the pseudo four-component system was obtained. By this method, it was found that the solubility of octanol in the surfactant phase is increased with increasing salinity, whereas that in the oil phase is decreased.
  • 長谷川 富市, 多田 千代
    1983 年 32 巻 7 号 p. 397-402
    発行日: 1983/07/20
    公開日: 2009/11/13
    ジャーナル フリー
    Washing experiments were performed by implementing different modes of action on a single sheet of artificially soiled cotton fabric : bending alone at one portion and a combination of bending and friction at another. The degrees of reflection at different portions were measured to separately evaluate the effects of bending and those of friction. A simple device was employed to measure the energy given to fabric sheets when they are bent at some curvatures. The energy data were used to assess the washing effects based on bending.
    The results obtained were as follows.
    1) In washing, the effects of friction appeared in a short period of time, but those of bending took more time to appear.
    2) The effects of bending and friction were both approximately 30 percent of the entire washing effects.
    3) The effects of bending increased monotonously with the curvature until it reached 0.2 (1/mm); and there was no increase any longer for greater curvatures.
    4) The effects of bending were practically equal independent of positive and negative curvatures (front and reverse sides of the sheet).
    5) The washing effects based on bending were practically proportional to the energy given to the sheet for a curvature of 0.2 (1/mm) or less.
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