Journal of Japan Oil Chemists' Society
Online ISSN : 1884-2003
ISSN-L : 0513-398X
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Volume 27, Issue 9
Displaying 1-13 of 13 articles from this issue
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  • Studies on Stability of Oils and Fats, and Higher Fatty Alcohols
    Shinroku MASUYAMA
    1978 Volume 27 Issue 9 Pages 559-564
    Published: September 20, 1978
    Released on J-STAGE: February 19, 2010
    DOIhttps://doi.org/10.5650/jos1956.27.559
    JOURNAL FREE ACCESS
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  • Studies on Solution Properties of Oligomeric Surfactants
    Yutaka ISHIGAMI
    1978 Volume 27 Issue 9 Pages 565-571
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.565
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  • Hydrogenation of Carbon Monoxide with Solid Catalysts. II.
    Hiromichi ARAI
    1978 Volume 27 Issue 9 Pages 572-578
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.572
    JOURNAL FREE ACCESS
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  • A Study on Triglyceride Composition of Lipid from Commercial Beef by High-Performance Liquid Chromatography
    Shun WADA, Chiaki KOIZUMI, Akihide TAKIGUCHI, Junsaku NONAKA
    1978 Volume 27 Issue 9 Pages 579-584
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.579
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    Triglyceride fraction was separated from beef lipid by liquid chromatographies on Bio-beads SX-2 and on Sephadex LH-20 and fractionated into six groups by reverse phase high-performance liquid chromatography (HPLC). The triglyceride and fatty acid compositions of six fractions were determined by GLC.
    The beef lipid contained at higher concentrations C-50, C-52, and C-54 triglycerides having partition numbers of 46, 48, and 50. The fatty acid compositions of these triglyeerides were mainly composed of C18 : 1 and C16 : 0 fatty acids.
    From these results, the possible fatty acid combinations of major triglycerides of beef lipid were estimated to be (1×C16 : 0, 2×C18 : 1;33.2%), (1×C18 : 0, 2×C18 : 1;10.1%), (3×C18 : 1;9.1%), and (1×C16 : 0, 1×C18 : 0, 1×C18 : 1;8.1%).
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  • Studies on Synthesis of Fatty Acid Derivatives by Flow Method. VII.
    Addition Reaction of Diester of Fumaric Acid to Safflower Fatty Acid Methyl Esters
    Osamu SUZUKI, Takao YAMASHINA
    1978 Volume 27 Issue 9 Pages 585-591
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.585
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    The catalytic addition reaction of diester of fumaric acid to safflower fatty acid methyl esters by flow method was investigated. It was found that the addition of diethyl fumarate to safflower fatty acid methyl esters is easily carried out by continuously passing the mixed sample of the methyl esters and diethyl fumarate at molar ratio of 1 : 1 over a high surface-area synthetic silica-alumina catalyst composed of 70% of SiO2 and 29% of Al2O3. The adduct separated by column chromatography was analyzed to have a cyclohexene ring structure by IR, NMR, and MS spectral measurement, and was confirmed to be formed by the Diels-Alder addition of diethyl fumarate to conjugated octadecadienoate.
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  • Separation and Estimation of Anionic Surfactants by Thin-Layer Chromatography. I.
    On the Mixtures of Sodium Dodecylbenzenesulfonate, Sodium Dodecyl Sulfate, and Sodium Dodecanesulfonate
    Chizuo YONESE, Takeshi SHISHIDO, Takahide KANEKO, Kazushige MARUYAMA
    1978 Volume 27 Issue 9 Pages 592-597
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.592
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    The separating and estimating conditions for anionic surfactants by TLC were studied.
    1) Sodium salts of dodecylbenzenesulfonate (LAS), dodecyl sulfate (LS-Na) and 1-dodecanesulfonate (SAS) were prepared and used as standard materials and samples.
    2) The optimum conditions for TLC were as follows;
    Stationary phase : Silica Gel G impregnated with 10% ammonium sulfate.
    Activating temperature and time : 110°C, 80min.
    Developing solvent : 2-methyl-4-pentanone·propyl alcohol·0.1N acetic acid·acetonitrile (volume ratio, 20 : 6 : 1.6 : 1).
    Charring temperature and time : 250°C, 15min.
    Detecting reagent : No use.
    3) Mixtures of LAS, LS-Na and SAS were separated and estimated each other by TLC under the above optimum conditions. The experimental error and coefficient of variation were 0.23.8% and 0.374.75 respectively.
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  • The Effect of Types of Solvents and Salts Added on the Solubilization of Water in Aerosol OT Nonaqueous Solutions
    Hironobu KUNIEDA, Masao HYAKUTAKE
    1978 Volume 27 Issue 9 Pages 598-601
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.598
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    The effect of the types of solvents on the solubilization of water in nonaqueous solutions of purified sodium 1, 2-bis- (2-ethylhexyloxycarbonyl) -1-ethanesulfonate (Aerosol OT) has been studied. The characteristic temperature, at which the solubilization of water is abruptly increasing, was found in certain nonaqueous solvent systems of purified Aerosol OT, such as benzene, toluene, tetrachloroethylene systems etc.. The characteristic temperature tends to be higher if the solubility parameter and/or the dielectric constant of solvent is large.
    The effect of NaCl added on the solubilization of water in nonaqueous solutions of purified Aerosol OT has been also studied. The maximum temperature of solubilization of water elevated and maximum amount of solubilization increased by adding a small amount of NaCl. It was also found that the solubilization curve for insufficiently purified Aerosol OT are mainly affected by water-soluble impurities (electrolytes).
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  • Automated Determination of Carbonates in Detergents by Continuous Flow Conductometry
    Jiro KAWASE, Makoto YAMANAKA
    1978 Volume 27 Issue 9 Pages 602-605
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.602
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    An automated conductometric method for the determination of carbonates in detergents has been developed.
    Using Technicon Auto Analyzer II, sample solutions were injected automatically into the continuous flow of acidic solution with air segmentation. The evolved carbon dioxide was introduced into the flow of deionized water, and then detected automatically by electric conductometry. The surface of sample solutions was covered with liquid paraffin to prevent the contamination of carbon dioxide from air.
    The range of the determination for sodium carbonate was from 10 to 200mg/l and the proposed method was applied to the determination of carbonates in several commercial detergents. The results agreed with those of conventional gas chromatographic method. The capacity of this method is 30samples/h.
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  • Determination of Isolated Trans Isomers in Fats and Oils by Infrared Spectrophotometry
    Haruo HIRAYAMA, Zenya SHIMODA, Satoshi NAKASATO, Yukinobu MURASE, Take ...
    1978 Volume 27 Issue 9 Pages 606-612
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.606
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    Infrared spectrophotometric methods for the determination of isolated trans isomers in fats and oils were studied collaboratively, using methyl elaidate, methyl stearate, and methyl esters of partially hydrogenated vegetable oils. A study was made to compare the AOCS tentative method with the IUPAC standard method. As the results of the collaborative tests, the IUPAC method was found to be more accurate than the AOCS tentative method. More accureate results, however, could be attainable by using a modified base line from 1050cm-1 to 940cm-1 in the AOCS tentative method. Furthermore, the influence of the methods of preparing methyl esters on the determination of isolated trans isomers was studied. Both the BF3-and H2SO4-methanol methods were consequently suitable for the preparation of methyl esters on the determinatiton of isolated trans isomers in fats and oils.
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  • Erratum to : Preparation and Properties of 2-Amino Acid Type Amphoteric Surfactant Containing Hydroxyl Group. I
    1978 Volume 27 Issue 9 Pages 612
    Published: 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.9_612
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  • Studies on Synthesis of Fatty Acid Derivatives by Flow Method. VIII.
    Mechanism of Addition Reaction of Maleic Anhydride to Castor Fatty Acid Methyl Esters
    Takao YAMASHINA, Osamu SUZUKI
    1978 Volume 27 Issue 9 Pages 613-616
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.613
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    The mechanism of catalytic addition reaction of maleic anhydride to castor fatty acid methyl esters by flow method was investigated. It was found that the mono ester of maleic acid with the hydroxyl group of methyl ricinoleate, 1-hexyl-11-methoxycarbonyl-3-undecenyl hydrogen maleate, was formed in 40% yield at 130°C by continuously passing the mixed solution of methyl ricinoleate and maleic anhydride at molar ratio of 1 : 1 over a high surface-area synthetic silica-alumina catalyst composed of 70% of SiO2 and 29% of Al2O3. Then, it was assumed that the mono ester plays a role as intermediate in the dehydration reaction of methyl ricinoleate for producing methyl octadecadienoate.
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  • Lipids (VIII)
    Toru TAKAGI
    1978 Volume 27 Issue 9 Pages 617-620
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.617
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1978 Volume 27 Issue 9 Pages 626
    Published: September 20, 1978
    Released on J-STAGE: November 10, 2009
    DOIhttps://doi.org/10.5650/jos1956.27.626
    JOURNAL FREE ACCESS
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