VITAMINS

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Print ISSN : 0006-386X

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Volume 11

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 341-342
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_341_3

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 342-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_342_1

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 342-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_342_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 342-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_342_3

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 342-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_342_4

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 342-343
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_342_5

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 343-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_343_1

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 343-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_343_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 343-344
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_343_3

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 344-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_344_1

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 344-345
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_344_2

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 345-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_345_1

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 345-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_345_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 345-346
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_345_3

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 346-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_346_1

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...

Article type: Article
1956 Volume 11 Pages 346-347
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_346_2

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 347-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_347_1

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 347-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_347_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 347-348
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_347_3

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 348-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_348_1

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1956 Volume 11 Pages 348-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_348_2

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 348-349
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_348_3

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 349-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_349_1

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 349-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_349_2

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 349-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_349_3

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 350-351
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_350

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 351-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_351_1

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 351-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_351_2

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 352-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_352_1

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Biopterin

[in Japanese]

Article type: Article
1956 Volume 11 Pages 352-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_352_2

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 352-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_352_3

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 352-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_352_4

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STUDIES ON THE BIOSYNTHESIS OF THIAMINE

Ryoji HAYASHI

Article type: Article
1956 Volume 11 Pages 353-361
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_353

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 361-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_361_1

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 361-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_361_2

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 361-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_361_3

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PHOTOLYTIC MICRODETERMINATION OF VITAMIN A IN BLOOD SERUM

Koji KIMURA

Article type: Article
1956 Volume 11 Pages 362-368
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_362

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An improved method of photolytic microdetermination of vitamin A in blood serum according to Bessey et al. was reported. Improvements consist in the purification procedure of kerosene and the demonstration of the necessity of correcting for the increased blank optical densities due to ultraviolet irradiation. Vitamin A ester showed similar behavior to vitamin A alcohol in the given procedure. The factor for calculating vitamin A level from differences in optical densities before and after irradiation was obtained experimentally using a standard vitamin A solution. The values for human blood serum vitamin A determined photolytically by the proposed method and those by micro-GDH method were found to be practically the same.

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 368-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_368

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STUDIES ON THE DETERMINATION OF VITAMIN E : (III) FURTHER INVESTIGATION OF FLUOROMETRIC METHOD

Goichiro KATSUI, Yoshitaka MATSUOKA

Article type: Article
1956 Volume 11 Pages 369-374
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_369

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For the purpose of determing vitamin E in multi-vitamin preparations, Kofler's fluorometric assay procedure was investigated. Vitamin A, D and K disturb the fluorometric determination of vitamin E. Only the choice, however, of light exiting- and fluorescence selecting- filters often enables to attain the determination of the vitamin in multivitamin preparations. When a large amount of inhibiting substances was contained in the preparations, the removal of those substances by condensing them with o-phenylenediamine followed by alumina chromatography enables the fluorometric estimation of the vitamin with a high accuracy.

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 374-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_374_1

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 374-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_374_2

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 374-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_374_3

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STUDIES ON URINARY EXCRETION TEST AS A MEASURE OF VITAMIN B_<12> ABSORPTION : (I) PROCEDURES AND NORMAL VALUES

Kunio OKUDA

Article type: Article
1956 Volume 11 Pages 375-380
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_375

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The technique of measurement of Co^<60>-labeled vitamin B_<12> in urinary excretion test was studied with regard to the errors and factors which influence the test results. The oral dose of 2μg was used as the standard dosage, and for "flushing" purpose 1mg of unlabeled vitamin B_<12> was given by intramuscular injection two hours later. The normal range and average value of urinary excretion at this oral dose were measured. This test seems to be of value for clinical applications, because of its practicability, provided the assumption holds true that the urinary excretion is in relative proportion to the absorption

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STUDIES ON URINARY EXCRETION TEST AS A MEASURE OF VITAMIN B_<12> ABSORPTION (II) : URINARY EXCRETION RATE AT VARYING ORAL DOSAGES

Kunio OKUDA

Article type: Article
1956 Volume 11 Pages 381-384
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_381

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The oral dose of Co^<60>-vitamin B_<12> was increased from 2μg to 8,25,50 and 250μg and the urinary excretion rate for each dose was determined in normal subjects. It was demonstrated that when the oral dose was increased, the urinary excretion rate was considerably decreased, and the net increase over 2μg dose in urinary excretion was very slight as compared with the increase in the oral dose of Co^<60>-vitamin B_<12>. The data seem to indicate the limitation of vitamin B_<12> absorption from the gastrointestinal tract of normal individuals, particularly when the oral dose exceeds 8μg.

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 384-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_384_1

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 384-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_384_2

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STUDIES ON THE ENRICHMENT OF SOME FOODSTUFFS WITH VITAMIN B_<12> (I) : ON THE STABILITY OF VITAMIN B_<12> IN FOODS

Jusaku TAKAHASHI

Article type: Article
1956 Volume 11 Pages 385-388
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_385

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The change of vitamin B_<12> in enriched miso (fermented bean paste), jam, cream and soy under storage or in heating was tested by microbiological method with Euglena gracilis var. bacillaris. (1) Vitamin B_<12> in miso was relatively stable. During storage for 30 days, the vitamin in miso remained 89 per cent at 3-5℃, and 79-85 per cent at 3-5℃ and 35-59 per cent at 30℃. (2) On the other hand, vitamin B_<12> in soy was considerably unstable during the storage. Then vitamin B_<12> in it remained 75 per cent at 30℃. (3) It was confirmed that Torula utilis, Mycoderma cerevisiae etc. had vitamin B_<12>-forming ability slightly. (4) Moreover, vitamin B_<12> in miso was comparatively stable on heating. Consequently, only 6 per cent of vitamin B_<12> in it was degraded by heating for 30 minutes at 100℃. But vitamin B_<12> in soy was so unstable on heating that, 28-54 per cent of vitamin B_<12> in it was degraded on heating for 12-30 minutes. In short, the enrichment of soy with vitamin B_<12> seems to be unsuitable. (5) 67-78 per cent of vitamin B_<12> enriched in jam was degraded during storage for 30 days at 3-5℃ or 30℃, while only 16-24 per cent of vitamin B_<12> enriched in cream was degraded under the same conditions.

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 388-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_388_1

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[title in Japanese]

[in Japanese]

Article type: Article
1956 Volume 11 Pages 388-
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_388_2

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STUDIES ON THE INDUSTRIAL PRODUCTION OF RIBOFLAVIN BY THE SUBMERGED CULTURE OF EREMOTHECIUM ASHBYII (IV) : CONDITIONS OF STERILIZATION, ANTIFOAM AGENTS AND CONTAMINATION-PREVENTING AGENTS

Kazunori TSUKIHARA, Masakazu IZUMIYA

Article type: Article
1956 Volume 11 Pages 389-392
Published: 1956
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.11.0_389

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Several fundamental experiments were made in order to prevent bacterial contamination. The results obtained are as follows : 1) Conditions for sterilizing some kinds of media in several vessels were confirmed. In the experiment using a medium containing cane molasses and fish meals, no change of riboflavin production occured on sterilizing at 121℃, 1/2 or 1 hour, but riboflavin production was decreased to 73 and 65% in case of 3 and 5 hours sterilization. 2) Test of 6 kinds of antifoam agents showed that a small amount of them did not exert inhibitive effect on riboflavin production. 3) Culture of Eremothecium ashbyii was contaminated when incubated in a medium containing 3% of glucose, 3% of fish meal and 4-10mg% of 2-(5 nitro)-furfuralsemi-carbazone after heating at 100℃ for 1 hour.

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