油化学
Online ISSN : 1884-2003
ISSN-L : 0513-398X
36 巻 , 3 号
選択された号の論文の9件中1~9を表示しています
  • 小田 良平
    1987 年 36 巻 3 号 p. 165-175
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
  • 樋口 勝彦, 石川 一彦, 山科 孝雄, 平田 博文
    1987 年 36 巻 3 号 p. 176-182
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
    N-スクシンイミジルベンゾエート (1) がタンパク質の修飾剤としての可能性を得ることを目的として, モデル化合物としてアミノ酸 (2) を選び, 水溶液中での (1) との反応を25℃, pH=pKaで速度論的に研究した。 (1) による (2) のN-アリールカルボニル化は (1) の分解と競争的に起こり, その速度はV= (k1, d+k2 [2]) [1] で表すことができた。ここで, k1, dは (1) の分解の一次速度定数を, k2は (1) による (2) のN-アリールカルボニル化の二次速度定数を示す。
    二次速度定数, k2, は (2) の求核性 (pKa) と良好な相関性を示し, logk2 vs. pKaのプロットの傾きは0.78~0.86であった。また, メタ置換の (1) のハメットプロット (logk2 vs. σ) は直線性を示し, ρ値は正0.65~1.28) であり, オルト置換の (1) は立体障害のため置換安息香酸のpKaから予期される速度よりは小さかった。さらに, 速度比, 10-3k2/k1, dは若干のアミノ酸を除いて1.0よりは大きいことが認められた。以上の結果から, (1)による (2) のN-アリールカルボニル化は遊離のアミノ基がエステルカルボニルの炭素原子を求核的に攻撃して起こり, さらに, (1) を用いればタンパク質の修飾が可能であることが結論できた。
  • 加藤 治, 田中 正康, 石井 重吉, 伊藤 俊洋, 金子 弘
    1987 年 36 巻 3 号 p. 183-187
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
    A simple quantitative method for the analysis of oxidized methyl linoleate and edible oils by TLC-FID has been developed. Oxidized methyl linoleate 10200 μg was developed on a Chro marod SII, first by n-hexane to 10 cm and then by n-hexane : diethylether, 8 : 2 vol/vol to 7 cm. This double developing method was found applicable to the quantitation of oxidation products from methyl linoleate. Moreover, the most suitable conditions for quatitating very small amounts of as many oxidized products as possible were determined. A 200μg sample (almost the maximum amount) was spotted on a Chromarod and developed first by η-hexane to 8 cm, then to 10 cm and finally by η-hexane : diethylether 9 : 1 vol/vol to 7 cm. By this triple developing method, 1% of the oxidation products containing in methyl linoleate were quantitated. Both methods are applicable to the analysis of oxidation products in edible oils such as corn and safflower oil.
  • 亀山 栄一, 湯沢 治郎, 桑村 常彦
    1987 年 36 巻 3 号 p. 188-191
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
    A study was made of the transport through a 1, 2-dichloroethane liquid membrane of two kinds of zwitter ionic compounds, dodecyldimethylammoniododecaneimidate (AI) and (1-tetradecyl-2-pyridinio) -octanesulfonimidate (PY), as carrier molecules.
    Halide ions were sym-ported with hydrogen ions, almost completely so by AI. The rate of transport of AI or trioctylamine (AM) was much faster than that of PY or perhydrodibenzo-18-crown-6. For iodide ions, the rate by AI was faster than that by AM.
    Phenylalanine was counter-ported by AI, as well as AM, in the opposite direction to hydrogen and halide ions, against its concentration gradient. The flux was 2×10-3mol·cm-2·mol-1·h-1. This result along with the fact of permanganate ion extraction, indicate ion release to be the rate determining step for the transport of phenylalanine by AI.
  • 田村 知佳子, 佐藤 昌子, 皆川 基
    1987 年 36 巻 3 号 p. 192-199
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
    The effects of builder action i.e., dispersion, calcium binding and alkaline buffer action, on the removal of Fe2O3 particulate soils were studied using various copolymers of sodium styrenesulfonate with sodium methacrylate and 2-hydroxyethylmethacrylate so as to find some substitute for a phosphate builder.
    The calcium binding capacity of builders was measured by the calcium electrode method. Particle size in suspension, deposition, redeposition and removal efficiency were investigated as functions of builder concentration under fixed conditions of 50 ppm hard water, pH 10 and 30°C. The ζ-potentials of particles and fabrics were also measured by microelectrophoresis and streaming potential, respectively.
    The most important function of a builder should be its ability to adsorb polyelectrolyte with electric and steric barrior effects, since removal behavior of particulate soil is influenced more electrokinetic phenomena than chelating phenomena.
    Sodium styrenesulfonate-sodium methacrylate copolymer having multi-functional builder action, i.e., dispersion, calcium binding and alkaline buffer action was found to be an excellent new builder.
  • 金 月仙, 川瀬 徳三, 藤井 富美子, 皆川 基
    1987 年 36 巻 3 号 p. 200-205
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
    The ability of a lipase and surfactant in combined form in solution to remove fatty soil was investigated. The specific conductivities, binding isotherms, surface tensions, solubilization of Yellow OB were measured using Chromobacterium vicosum (Chr) and sodium dodecyl sulfate (SDS) as the lipase and surfactant, respectively. The removal of squalane soil by this means was also examined.
    SDS interacts with the protein of Chr to afford a Chr-SDS complex (cluster). The surface tension of the combined lipase-surfactant solution reaches a plateau at a lower concentration than when SDS is present alone. As the concentration of SDS increases, oily materials solubilize in the hydrophobic region as a result of interaction between the cluster and free surfactant. The data of the present study indicate solubilization to be quite important for the removal of fatty soil in a Chr-SDS combined system.
  • 倉田 武夫, 越山 孝雄, 川島 浩志
    1987 年 36 巻 3 号 p. 206-209
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
    The reaction of α-pinene-2, 3-epoxide (1), d-limonene-1, 2-epoxide (2) and styrene oxide (3) by the potassium permanganate coated molecular sieve catalyst (KMnO4/sieve) were investagated. Epoxide (1) was easily isomerized to 2, 2, 3-trimethyl-3-cyclopenten-1-acetaldehyde (5) with a high selectivity of 78.6%. 1-Methyl-3-isopropenyl--cyclopentyl-1-carboxaldehyde (10) was obtained as the main product from (2). Benzaldehyde (15) was produced preferentially when the reaction of (3) was conducted in the presence of toluene at 110°C for 3 h.
  • 幡手 英雄, 中村 孝
    1987 年 36 巻 3 号 p. 210-212
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
    A substance which accelerates the amidase activity of trypsin by more than three times that of intact trypsin was separated from autoxidized methyl linolenate by gel chromatography on Sephadex LH- 20, silicic acid chromatography on Silica gel 60, and by high-performance liquid chromatography on μ-Porasil. This substance isolated from the highly active fraction was identified as methyl 12-oxo-9-hydroxy-10-dodecenoate by GLC and GC-MS analyses.
  • 安田 耕作
    1987 年 36 巻 3 号 p. 213-217
    発行日: 1987/03/20
    公開日: 2009/11/10
    ジャーナル フリー
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