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Volume 23, Issue 4
Displaying 1-10 of 10 articles from this issue
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Hiroshi Nakamura1974 Volume 23 Issue 4 Pages 215-219
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
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Takeo YAMAUCHI1974 Volume 23 Issue 4 Pages 220-227
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
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Kaneyuki SOHDE, Tadashi OGAWA, Setsuro MATSUSHITA1974 Volume 23 Issue 4 Pages 228-232
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSHydroperoxides isolated from oxidized methyl linoleate and safflower oil were characterized by proton magnetic resonance spectrometry.
NMR spectra substanciated the chemical structure of the hydroperoxides of methyl linoleate which had been postulated by many investigators. The signal of the hydroperoxy proton of methyl linoleate hydroperoxide appeared as a broad singlet at considerable downfield (δ, ca. 8ppm) from tetramethylsilane (δ=0) as an internal standard in CCl4. The hydroperoxide derivatives obtained from linoleate rich triglyceride (safflower oil) were also analyzed with regard to their structural changes in fatty acid residues during peroxidation.
NMR spectrometry might be applicable to the direct determination of lipid hydroperoxides.View full abstractDownload PDF (604K) -
Characteristic Fragmentations of Methyl SterolsTakashi IIDA, Toshitake TAMURA, Kazuyuki SATOMI, Choichiro HIRAI, Yasu ...1974 Volume 23 Issue 4 Pages 233-240
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSUsing combined gas chromatography-mass spectrometry, the mass spectrometric fragmentations of 20 kinds of methyl sterol and their corresponding 10 kinds of sterol which are related to cholesterol families have been investigated.
The patterns of the spectra of 4-metyl sterols were generally similar to those of the corresponding sterols except for following ion j (Table-1). Characterstic ion j was observed at m/e [M- (H2O+29)] + for 4-monomethyl sterols and at m/e [M- (H2O+43)] + for 4, 4-dimethyl sterols, demonstrating that this ion serves to distinguish 4-methyl sterols from all other groups of sterol. It has been suggested that the formation of this ion probably involves loss of C-4 methyl group together with C-3 functional group from molecular ion.
Characteristic fragmentations of saturated sterols, and of monounsaturated (Δ5, Δ7, Δ8 (14) , Δ14), diunsaturated (Δ5, 7, Δ7, 9 (11) , Δ8, 14, Δ7, 14) and triunsaturated (Δ5, 7, 9 (11) ) sterols were also described.View full abstractDownload PDF (1089K) -
Noriji ONUKI, Shigezo MATSUBARA, Takehlko YAMADA, Yoshiaki MACHIDA, Yo ...1974 Volume 23 Issue 4 Pages 241-245
Published: April 20, 1974
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSAuthors proposed a procedure for the rapid determination of Dowtherm A (Therm-S-300), Neo-SK-Oil #260 and KSK-Oil 260 in deodorizer distillate. Much quanties of interfering matters in deodorizer disstillate are removed by silicagel column chromatograpy followed by analysis of the heat transfer mediums through gas liquid chromatography.
Each analysis takes about 2 hours.
The lower detection limit is 100 ppm for Dowtherm A and 250 ppm for Neo-SK-Oil #260 and KSK-Oil 260 respectively, enabling easy identification.View full abstractDownload PDF (603K) -
On the Volatile Oil from Steam DistillationHiromu KAMEOKA, Mitsuo MIYAZAWA, Yasuko ANDOU, Toshie ODA1974 Volume 23 Issue 4 Pages 246-249
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSThe authors have studied to elucidate the constituents of the volatile oil Saxifraga stolonifera Meerb.
The volatile oil was treated with 2N-sodium carbonate, then with 2N-sodium hydroxide solution, and was separated into the three parts; neutral, sodium carbonatesoluble, and sodium hydroxide soluble part.
Each part was investigated by means of column chromatography, gas chromatography, infrared spectrum, mass spectrum, nuclearmagnetic resonance spectrum and chemical method.
As a result, forty eight kinds of compound were detected as the constituents of this volatile oil as follows leaf alcohol, α-pinene, camphene, 1, 4-cineole, limonene, linalool, borneol, citronellol, linalyl acetate, geraniol, bornyl acetate, α-terpinyl acetate, geranyl acetate, dodecanal, β-elemen, α-cedrene, calamenene, n-C17H36, n-C18H38, n-C19H40, iso-C20H42, n-C20H42, iso-C21H44, n-C21H44, n-C22H46, iso-C23H48, n-C23H48, n-C24H50, n-C25H52, n-C26H54, n-C27H56, n-C28H58, n-C30H62, n-C31H64, n-C32H66, caprylic acid, capric acid, lauric acid, myristic acid, pentadecanoic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, phenol o-cresol, p-cresol and m-cresol.View full abstractDownload PDF (544K) -
Masako TSUCHIDA, Toshiyuki MIURA, Komei MIYAKI1974 Volume 23 Issue 4 Pages 250-254
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSPrevious investigations have been demonstrated that several oxidation products derived from methyl linoleate possess the definite toxicity for mice and chick embryos in vivo.
In this study, the effect of their compounds on the (Na++K+) -ATPase (EC 3.6. 1.3) obtained from rat jejunum mucosal cell in vitro was clarified. To investigate the oil-enzyme interaction, authors proposed a new technique using the oil adsorbed on cellulose powder without surface active agents which inactivate the enzyme activity.
By this procedure, it was found that all oxidized compounds inhibited the (Na++K+) -ATPase activity more or less and their concentrations of 50% inhibition of the enzyme (Ki) corresponded closely to the LD50s for chick embryos or the decreases in the body weight of mice administered them.
Thus, the biological lesions previously found such as increase of water content in the small intestinal lumen of mouse administered could be explained by the inhibition of (Na++K+) -ATPase.View full abstractDownload PDF (629K) -
Effects of Nonionic Surface Active AgentsYukio FURUICHI1974 Volume 23 Issue 4 Pages 255-256
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSThere are many reports on the interactions between amylases and surface active agents, especially, on ionic surface active agents which were said to inhibit amylases strongly. In this report the effects of nonionic surface active agents on hog pancreatic amylases were studied. Determination of amylase activities were carried out by 3, 5-dinitrosalicylic acid colorimetrically.
The results are as follows. (1) Polyethylene glycol monolauryl ether inhibits amylase activities strongly.
(2) Triton X-100 (non-ionic detergent, polyoxyethylated octylphenol, ethylene oxide : 9.7 units) does not inhibit.View full abstractDownload PDF (249K) -
Synthesis and Their Surface Activity of Sulfonated Type Amphoteric Surfactants from Alkyl Isobornyl MaleateYoshiharu MATSUBARA, Masanobu KASANO, Kouichiro TAJIMA, Susumu KAWAMOT ...1974 Volume 23 Issue 4 Pages 257-258
Published: April 20, 1974
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSSix kinds of sulfonated type amphoteric surfactants were prepared by addition of amino sulfonate such as taurine or N-methyl taurine to alkyl-isobornyl-maleates (AIBM).
Thus synthesized surfactants were enough investigated for the surface activities such as surface tention, penetrating power and emulsifying power.
In these amphoteric surfactants, the surface activities of adducts of taurine or N-methyl taurine and 2-ethyl-hexyl-isobornyl maleate showed almost similar surface activities as compared with DBS (sodium dodecyl-benzen-sulfonate).View full abstractDownload PDF (247K) -
Shizuyuki OTA1974 Volume 23 Issue 4 Pages 259-269
Published: April 20, 1974
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSDownload PDF (1933K)
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