Journal of Japan Oil Chemists' Society
Online ISSN : 1884-2003
ISSN-L : 0513-398X
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Volume 30, Issue 11
Displaying 1-13 of 13 articles from this issue
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  • Spin Probe Study of Surfactant Micelles
    Hisashi YOSHIOKA
    1981 Volume 30 Issue 11 Pages 727-734
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.727
    JOURNAL FREE ACCESS
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  • Application of Chemical Relaxation Methods
    Tatsuya YASUNAGA
    1981 Volume 30 Issue 11 Pages 735-741
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.735
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  • Light Scattering and Molecular Association
    Tadashi KATO, Tsunetake FUJIYAMA
    1981 Volume 30 Issue 11 Pages 742-748
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.742
    JOURNAL FREE ACCESS
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  • Thermoanalytical Investigation of Surfactant-Water System
    Michiko KODAMA, Syuzo SEKI
    1981 Volume 30 Issue 11 Pages 749-756
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.749
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  • Organic Builders. XII.
    Studies on Poly (Sodium Acrylate) and Poly (Sodium 2-Hydroxyacrylate)
    Yoshiro ABE, Shuichi MATSUMURA, Takeshi MIURA, Kaname SAKAI
    1981 Volume 30 Issue 11 Pages 757-761
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.757
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    Poly (sodium acrylate) s with molecular weight 56041100 and poly (sodium 2-hydroxyacrylate) s with molecular weight 11007800 were prepared, and their building performances, Ca2+ sequestering capacity, surface tension, emulsifying power, cmc, buffering capacity, dispersing power for carbon black and MnO2, and the detergency on soiled cotton fabrics were also determined for the builders (with/without sodium dodecylbenzenesulf ovate) and compared with the corresponding properties for sodium tripolyphosphate (STPP) and disodium 3-oxapentanedioate (ODA).
    It was evident that the washing efficiencies of detergents containing each of the builders correlated with Ca2+ sequestering capacities and dispersing power for MnO2. Other physicochemical properties of the builders correlated poorly with their washing efficiencies. The most effective molecular weight for these poly electrolytes were about 8000. Poly (sodium acrylate) s with molecular weight 300010000 had better building performances than STPP. And also the polyacrylates had better building performances than the poly (2-hydroxyacrylate) s.
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  • Syntheses of 2-Alkyl-2-cyclopentenones and 2-Alkylcyclopentanones from 1-Alkyl-cis-2, 3-epoxycyclopentanols
    Takashi IWAHASHI, Fumio MATSUBARA, Yoshiro YOSHIHIRO
    1981 Volume 30 Issue 11 Pages 762-766
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.762
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    A mixture of 2-alkyl-2-cyclopentenone (2) and 2-alkylidenecyclopentanone (3) was obtained in good yield by the treatment of 1-alkyl-cis-2, 3-epoxycyclopentanols (1) in an aqueous mineral acid. In case of the use of aqueous 10% hydrochloric acid, 1-alkyl-3-chloro-1, 2-cyclopentanediols (4) were produced remarkably. It was presumed that (2) and (3) were produced via the enol forms by intramolecular dehydrochlorination of (4).
    cis-1, 2-Diols (5) were produced nearly quantitatively by the reduction of (1) with LiAlH4 in dried tetrahydrofuran. When (5) were reacted in an aqueous mineral acid, 2-alkylcyclopentanones (6) were obtained in 8895% yield. It was suggested that (6) were produced via the enol form by dehydration of (5).
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  • Synergism between -Tocopherol and Amino Compounds in the Inhibition of the Autoxidation of Fatty Acid Methyl Esters
    Yukihiro ISHIKAWA, Kinue ITOH
    1981 Volume 30 Issue 11 Pages 767-770
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.767
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    Factors affecting synergism between γ-tocopherol (γ-Toc) and amino compounds in the inhibition of the autoxidation of methyl esters of fatty acids, mainly linoleate, were investigated in order to clarify the conditions exhibiting their synergism.
    Tri-n-octylamine (TOA) and trimethylamine oxide (TMAO) themselves used as synergists were pro-oxidative, but they, especially TOA, remarkably synernized with γ-Toc when higher concentration of γ-Toc was present. Lecithin and cephalin showed no pro-oxidative activity under these conditions. Out of the reducing dimers of γ-Toc, γ-Toc ether dimer showed synergism with TOA and TMAO, but γ-Toc biphenyl dimer didn't. It was found, therefore, that the synergistic effects required limited factors such as temperature, concentration, the composition of fatty acids, etc. when purified methyl linoleate was used as a substrate.
    As TMAO served as a potent synergist for a small amount of Toc in inhibiting the autoxidation of lard, however, remarkable synergism could be expected by a combination of Toc and more than two kinds of amino compounds containing at least a substance which compensates pro-oxidative actions of synergists such as TMAO and strongly draws forth their synergistic abilities.
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  • Esterification Catalyzed by Macroreticular Ion Exchange Resin in Strong Acid Form
    Shoichi SHIMIZU, Kazumi ISHII, Choichiro HIRAI
    1981 Volume 30 Issue 11 Pages 771-774
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.771
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    The esterification of n-fatty acids with 1- and 2-butanols catalyzed by macroreticular sulfonated ion exchange resin has been studied in a batch reactor. The reaction was first-order in concentration of fatty acid over the range of experimental conditions.
    From the results summarized in Figs.-2 and 3, it was determined that neither bulk diffusion nor pore diffusion is a limiting step in the reaction.
    The results of Fig.-4 show that in the esterification with 1-butanol catalyzed by the ion exchange resin the carbon number of fatty acid influences significantly the reaction rate, in other words the ion exchange resin as catalyst has selectivity. However, as may be seen in Fig.-5, in the esterification with 2-butanol the selectivity of the catalyst was not recognized. The above results are explained by introducing the assumption that the reaction with 1-butanol is catalyzed by the hydrophobic proton and the matrix-bound -SO3H groups, the reaction with 2-butanol is catalyzed by the hydrophobic proton and hydrated proton in the resin matrix.
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  • Preparation of N-n-Alkyl-N, N, N', N', N'-pentamethylethylenediammonium Dichlorides and Their Antibacterial Properties
    Ken TAKAKI, Kenji NEGORO, Shin NISHIKAWA, Makoto SAKAI
    1981 Volume 30 Issue 11 Pages 775-777
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.775
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    N-n-Alkyl-N, N, N', N', N'-pentamethylethylenediammonium dichlorides were prepared according to two different methods. Antibacterial properties of the diammonium salts and N-n-alkyl (2-hydroxyethyl) dimethylammonium chlorides, obtained as intermediates, against Staphylococcus aureus and Escherichia coli have been investigated. Activities of the diammonium salts were superior to those of the monoammonium salts and increased with increasing alkyl-chain length.
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  • Oxygen Absorption Method for Assessing Oxidative Stability of Fats and Oils
    Akihiko NAGAO, Megumi YAMAZAKI
    1981 Volume 30 Issue 11 Pages 778-780
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.778
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    An oxygen absorption method was applicated for the evaluation of oxidative stability of fats and oils. The amount of oxygen absorbed by fats and oils was measured with a Warburg manometer at 70°C. The induction periods, that is, the time required for decreasing the pressure in the flask by 20 mmHg, showed excellent correlation with those obtained by an active oxygen method (A.O.M.) and the almost same precision as A.O.M, and weighing method.
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  • Synergism between Butylated Hydroxyanisole and Trimethylamine Oxide in the Inhibition of the Autoxidation of Methyl Linoleate
    Yukihiro ISHIKAWA
    1981 Volume 30 Issue 11 Pages 781-783
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.781
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    The synergistic effect of trimethylamine oxide (TMAO) on the antioxidative activity of butylated hydroxyanisole (BHA) in the autoxidation of methyl linoleate was investigated.
    The peroxide value of methyl linoleate incubated with BHA and TMAO at 50 C was maintained at lower values, and methyl oxo-octadecadienoate was specifically formed only in the presence of both BHA and TMAO. The amounts of BHA reducing dimers formed were very small and the residual amount of BHA was larger. Therefore, remarkable synergism between them is likely to be due to the preferential regeneration of the initial BHA after it offered H to oxidizing methyl linoleate.
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  • New Aspects on Nutrition
    (3) Polyenoic Acid and Prostaglandin
    Yoshimi OHNO, Ichiro HARA
    1981 Volume 30 Issue 11 Pages 784-790
    Published: November 20, 1981
    Released on J-STAGE: February 19, 2010
    DOIhttps://doi.org/10.5650/jos1956.30.784
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1981 Volume 30 Issue 11 Pages 791-798
    Published: November 20, 1981
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.30.791
    JOURNAL FREE ACCESS
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