VITAMINS

Online ISSN : 2424-080X
Print ISSN : 0006-386X

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Volume 45, Issue 6

Displaying 1-27 of 27 articles from this issue

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Thiamine Metabolism in the Experimental Magnesium Deficient Rat : (II) EFFECT OF MAGNESIUM DEFICIENCY ON TISSUE TRANSKETOLASE ACTIVITY OF RAT

Yoshinori ITOKAWA, Kikuko INOUE

Article type: Article
1972 Volume 45 Issue 6 Pages 317-320
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_317

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In a series of studies in this department concerning to the interrelationship between thiamine and magnesium, the effect of magnesium deficiency on transketolase activity was investigated. Transketolase activities in blood cells, brain, spinal cord and liver of rats on a thiamine deficient or the both thiamine and magnesium deficient diet decreased markedly. In vitro addition of thiamine pyrophosphate to tissue homogenite of thiamine deficient rats resulted in a recovery of transketolase activity. However, this phenomenon did not occur in the both thiamine and magnesium deficient rat. These findings could be due to interference of transketolase apoenzyme action. Omission of magnesium ion in reaction mixture has no effect on tissue transketolase activities of either group.

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Nutritional Effects of Distiller's Residues and Orotic Acid

Hisayoshi IWATA, Kunihiko KOBAYASHI, Yoshito SUGA, Kazuo MOCHIZUKI

Article type: Article
1972 Volume 45 Issue 6 Pages 321-326
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_321

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Some kinds of dried residues made, mainly, from the waste liquor of a sweet-potato-alcohol-fermentation factory were found to contain the orotic acid and other various bases or their precursors besides ordinary nutrients. The digestibility coefficient, growth ratio, feed efficiency, and accumulation coefficient of protein of the dried residues and the orotic acid were compared. Discussing the results of these experiments the presence of so called UGF other than the orotic acid has been concluded.

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Availability of the Method of N-Bromosuccinimide for Vitamin C Assay

Shinji NUMA

Article type: Article
1972 Volume 45 Issue 6 Pages 327-332
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_327

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Reactions of N-bromosuccinimide (NBS) to ascorbic acid (AsA), other reductones, enzyme protein and amino acids were investigated. NBS reacted with equimolecular amount of AsA, triose reductone or reductic acid, and with the mixture of reductone III and B, without any preferential oxidation of AsA to the other reductones. The titrated values of these reductones by NBS method coincided almost with those by indophenol method. The reaction mixture of 3,4-dihydroxyphenylalanine (DOPA) and phenolase caused some interference to the NBS method. This interference was not due to the reaction of NBS to either DOPA or phenolase. On the other hand, amino acids such as tryptophan, glycine and phenylalanine caused no interference to the NBS method. From these results, the availability of the NBS method for vitamin C assay was discussed.

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Growth-Inhibition of Baker's Yeast by Cationic Surface-Active Agents : (IV) INHIBITION AGAINST LOGARITHMICALLY GROWING CELLS AND EFFECTS OF SOME ADDITIVES CONTAINING VITAMINS

Kozo OKADA, Yoshiro NAMBA

Article type: Article
1972 Volume 45 Issue 6 Pages 333-339
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_333

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The growth-inhibition of the yeast cells in a logarithmic phase of growth by several kinds of detergents of quarternary ammonium type has been investigated. In all the detergents tested, the concentrations of detergents inhibiting by 50% the protein synthesis and the multiplication of viable cells were considerably lower than those inhibiting by 50% the increase of turbidity. The inhibition of the detergents was significantly restored by either cell-washings or simple dilution of cultures. When ammonium salts were used as sole nitrogen source, there was progressively lesser growth inhibition by lauryl-dimethyl-benzylammonium chloride (L-B_Z) on increasing concentrations of ammonium sulfate, while the increasing concentrations of ammonium acetate stimulated inversely the inhibition. Addition of nicotinic acid led to considerable reversal against the inhibition by L-B_Z, but none of nicotinamide and NAD exhibited the effect.

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Biosynthesis of Esculin Glucoside by Mucor javanicus

Toshio MIYAKE, Yukio SUZUKI

Article type: Article
1972 Volume 45 Issue 6 Pages 340-343
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_340

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It was found that esculin glucoside was formed from maltose and esculin by washed cells of Mucor javanicus having the 5'-D-riboflavin-α-D-glucopyranoside-forming activity.

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 344-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_344_1

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[title in Japanese]

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

Article type: Article
1972 Volume 45 Issue 6 Pages 344-345
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_344_2

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[title in Japanese]

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

Article type: Article
1972 Volume 45 Issue 6 Pages 345-346
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_345

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 346-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_346_1

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 346-347
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_346_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 347-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_347_1

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 347-348
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_347_2

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 348-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_348

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 349-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_349_1

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 349-350
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_349_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 350-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_350_1

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[title in Japanese]

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

Article type: Article
1972 Volume 45 Issue 6 Pages 350-351
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_350_2

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 351-352
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_351

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[title in Japanese]

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

Article type: Article
1972 Volume 45 Issue 6 Pages 352-353
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_352

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 353-354
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_353

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 354-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_354_1

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[title in Japanese]

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

Article type: Article
1972 Volume 45 Issue 6 Pages 354-355
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_354_2

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[title in Japanese]

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

Article type: Article
1972 Volume 45 Issue 6 Pages 355-356
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_355

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[title in Japanese]

[in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 357-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_357_1

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[title in Japanese]

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

Article type: Article
1972 Volume 45 Issue 6 Pages 357-358
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_357_2

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 358-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_358_1

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1972 Volume 45 Issue 6 Pages 358-
Published: June 25, 1972
Released on J-STAGE: February 27, 2018

DOIhttps://doi.org/10.20632/vso.45.6_358_2

JOURNAL FREE ACCESS

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