VITAMINS

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

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Volume 8

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 393-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_393_3

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 394-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_394_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 394-396
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_394_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 396-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_396_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 396-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_396_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 396-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_396_3

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[title in Japanese]

Article type: Appendix
1955 Volume 8 Pages 397-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_397_1

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[title in Japanese]

Article type: Appendix
1955 Volume 8 Pages 397-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_397_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 398-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_398_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 398-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_398_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 398-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_398_3

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 398-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_398_4

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BIOSYNTHESIS OF COENZYMES FROM VITAMINS

Kunio YAGI

Article type: Article
1955 Volume 8 Pages 399-409
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_399

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 409-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_409_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 409-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_409_2

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STUDIES ON THIAMINE DECOMPOSING ACTIVITY OF FLAVONOID PIGMENTS OF PTERIDIUM AQUILINUM

Toshio NAKABAYASHI

Article type: Article
1955 Volume 8 Pages 410-414
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_410

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From the ethyl acetate soluble fraction of alcoholic extract of Pteridium aquilinum, two flavonoid pigments, astragalin (kaempferol-3-glucoside) and isoquercitrin (quercetin-3-glucoside), were isolated in the form of the yellow and needle crystals, respectively. Moreover the presence of a small quantity of rutin (quercetin-3-rhamnoglucoside) and two unknown flavonoid pigments was proved by the method of the paper chromatography. For studying the thiamine-decomposing activity of the pigments, 10μg of thiamine was incubated with 10μg of several flavonoid pigments at 70° for one hour at pH 7.0 in a total volume of 10ml and the activity was expressed by the quantity of decomposed thiamine. From the results of this experiment, it was proved that the pigments possessing free orthodihydroxyl group in the side phenyl radical such as quercetin and its glycosides had a marked activity. It is therefore presumed that at least a portion of the so-called "thermostable antithiamine factor" of bracken is isoquercitrin and rutin therein.

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 414-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_414_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 414-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_414_2

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STUDIES ON THIAMINE-DECOMPOSING THERMOSTABLE FACTOR : (I) THIAMINE-DECOMPOSING ACTIVITY OF FLAVONOIDS AND PHENOLS

Eiichi HASEGAWA

Article type: Article
1955 Volume 8 Pages 415-421
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_415

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The thiamine-decomposing activity of a series of flavonoids and phenols was investigated and the flavonoids containing o-diphenol in the side chain as well as pyrocatechol and its derivatives were found generally to have a very potent activity of thiamine decomposition. The glycoside formation at 3-hydroxy group showed varying influences according to the various derivatives.

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STUDIES ON THIAMINE-DECOMPOSING THERMOSTABLE FACTOR : (II) ISOLATION OF THERMOSTABLE THLAMINE-DECOMPOSING FACTOR OF FERNS

Eiichi HASEGAWA

Article type: Article
1955 Volume 8 Pages 421-424
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_421

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The thiamine-decomposing thermostable factor (SF) of ferns was isolated in a crystalline form. The absorption spectrum in the ultraviolet region agrees quite well with that of astragalin, but the infrared absorption spectrum showed minor differences in spite of general resemblance. The melting points, elementary analysis and Rf values of paper chromatography were found to be somewhat different. It is therefore concluded that the major part of bracken SF is a flavnnol, akin to astragalin. Further, it was proved by paper chromatography quercetin and isoquercitrin, the compounds which have already been reported by the author to have very potent SF activity.

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CHANGES OF VITAMIN C FRACTIONS DURING THE STORAGE OF VEGETABLES AND FRUITS

Emiko NAKAMURA

Article type: Article
1955 Volume 8 Pages 424-426
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_424

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Changes in the contents of ascorbic, dehydroascorbic and diketogulonic acids in 4 kinds of leafy vegetables, 3 kinds of root vegetables and two parts of a fruit during the storage at room temperature for 10-21 days were successively pursued. The decrease in ascorbic acid was more considerable in comparison with the fall or the rise of dehydroascorbic acid and diketogulonic acid.

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 426-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_426

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EFFECTS OF ANTIBIOTICS-FEEDING ON BODY VITAMINS : (IV) EFFECTS OF TERRAMYCIN ON GROWTH AND BODY VITAMINS OF CHICK AT ITS EARLY STAGE

Hisayoshi IWATA, Masahuto WADA, Takuya HAYASHIDA, Kunihiko KOBAYASHI

Article type: Article
1955 Volume 8 Pages 427-431
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_427

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Day old chick was raised 30 days long on the basal diet with or without terramycin in amount of 30 mg per kg of the diet. When the basal diet containing skimmed milk powder was used, the growth rate was increased by the addition of terramycin. But the number of caecum microorganisms, the concentration of serum calcium, and the contents of vitamin A, B_1,B_2,C of the liver and muscle were not affected noticeably. When a basal diet containing soybean oil meal was used, no marked change was produced by the addition of terramycin, contrary to our previous reports.

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 431-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_431_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 431-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_431_2

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EFFECT OF DIETS ON THE VITAMIN B METABOLISM (II)

Konosuke TOMABECHI, Isao NAKAMURA, Ichiro NAKAGAWA

Article type: Article
1955 Volume 8 Pages 432-437
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_432

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Further studies were made on the problem offered by us why the availability of B vitamins differs between animal and vegetable diets. Experiments were performed on adult subjects and rats, and it was confirmed that dietary components, especially cellulose and protein, played an important role in this problem. 1) Thiamine in urine and feces increased when cellulose was added to the diet, suggesting that thiamine synthesis by intestinal flora was accelerated. 2) On the other hand, the urinary excretion of riboflavin increased only by adding both cellulose and protein. 3) Vitamin B_<12> or methionine and tryptophan were effective remarkably.

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STUDIES ON THE NUTRITIVE EFFECT OF RIBOFLAVIN UNDER UNUSUAL ENVIRONMENTAL CONDITIONS

Mituo FUZITA

Article type: Article
1955 Volume 8 Pages 437-441
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_437

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Observations were made on 350 men over ten months. It was found that vitamin B_2 deficiency occurred more readily under some unusual environmental conditions, such as at low ambient temperatures (-10 to 10℃) with high humidity (85%) or in sunless atmosphere. The subjects were put on a standard meal of 2900 cal. containing 95 g of protein, 18 g of fat, 190μg of thiamine, 150μg of riboflavin, 14 mg of ascorbic acid and an ample amount of vitamin A, riboflavin only lacking entirely. A considerable reduction in the visual power and dark adaptation occurred after seven months which could completely be restored by administration of riboflavin.

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GROWTH EFFECT OF N-CABOBENZOXYGLUTAMIC ACID FOR ALBINO RAT

Michiko FUKANO

Article type: Article
1955 Volume 8 Pages 442-443
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_442

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The results obtained from experiments with young albino rats showed that N-carbobenzoxyglutamic acid had a slight growth promoting effect at the level of 3 mg per 100 g diet.

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ACTIVATED SLUDGE AS A SOURCE OF VITAMIN B_<12> : (V) SEASONAL VARIATION OF VITAMIN B_<12> CONTENT IN ACTIVATED SLUDGE

Tadashi KAMIKUBO, Toshio MIYAWAKI

Article type: Article
1955 Volume 8 Pages 443-445
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_443

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Investigations on the seasonal variation of vitamin B_<12> content in activated sludge showed that there seemed to be an optimum temperature for the growth of the microorganisms participating in the production of vitamin B_<12> in activated sludge, since the vitamin B_<12> content was highest in the activated sludge sampled in autumn followed by the spring sample and lowest in the sample obtained in winter and summer.

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 445-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_445_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 445-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_445_2

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STUDIES ON THE PREPARATION OF CRYSTALLINE VITAMIN B_<12> FROM ACTIVATED SLUDGE : (III) WASHING OF CARBON CAKE AND ELUTION OF VITAMIN B_<12>

Tadashi KAMIKUBO, Kinji TANAKA

Article type: Article
1955 Volume 8 Pages 446-449
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_446

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Estimation of vitamin B_<12> and total solids in the eluates obtained by the treatment of carbon cake on which the vitamin was adsorbed, with various concentrations of acetone showed that vitamin B_<12> was not eluted with acetone of concentrations less than 20 % while a considerable amount of impurities was removed by acetone of the same concentrations. Consequently, washing of the carbon cake with 15-20 % acetone and elution with 50-60 % acetone afforded to purify the original solution obtained from activated sludge approximately 20-25 fold.

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 449-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_449_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 449-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_449_2

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MICRO-DETERMINATION OF RIBOFLAVIN IN BLOOD

Kunio YAGI, Saburo KIKUCHI, Toru KARIYA

Article type: Article
1955 Volume 8 Pages 450-451
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_450

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Riboflavin in blood was extracted with water by heating the mixture at 80℃ for 15 minutes. The solution was mixed with trichloroacetic acid aqueous solution, and riboflavin in its supernatant was determined by the lumiflavin fluorescence methed. (cf. Vitamin, 6,528).

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 451-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_451

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STUDIES ON THE DETERMINATION OF RIBOFLAVIN BY LUMIFLAVIN METHOD : (I) ON THE FLUORESCENT SUBSTANCES INHIBITING THE DETERMINATION OF RIBOFLAVIN IN HUMAN URINE

Isao ISHIGURO, Kiheiji TANAKA, Osamu KINOSHITA

Article type: Article
1955 Volume 8 Pages 452-457
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_452

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The determination of riboflavin content in human urine by the lumiflavin method not only gives no correct value, but also is sometimes difficult, owing to the fluorescent substances which inhibit the determination. Investigations on the fluorescent substances inhibiting the determination indicated that anthranilic acid and its conjugate disturbed the estimation.

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 457-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_457_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 457-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_457_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 458-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_458_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 458-459
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_458_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 459-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_459

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 460-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_460_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 460-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_460_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 460-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_460_3

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 460-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_460_4

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 461-
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_461_1

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 461-462
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_461_2

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 462-463
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_462

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[title in Japanese]

[in Japanese]

Article type: Article
1955 Volume 8 Pages 463-464
Published: 1955
Released on J-STAGE: December 22, 2017

DOIhttps://doi.org/10.20632/vso.8.0_463

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