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Volume 23, Issue 7
Displaying 1-9 of 9 articles from this issue
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Part IV. Isolation of Butyric Acid BacteriaT. ASAI, M. OHARA, T. KITAJIMA, E. KOMATSU, K. ARIMA, Y. AOKI, K. SAKA ...1950 Volume 23 Issue 7 Pages 275-280
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSButyric acid bacteria were isolated from about six hundred materials, i.e. soils, grains, potatoes, beans, dungs and others. Thirteen strains of the isolates produced butyric acid from 30 to 41 per cent and acetic acid from 3.3 to 8.9 per cent based on cane sugar. The potato or the maize mash was good as the enrichment medium of the butyric acid bacteria. Soils were the richest in these bacteria. One strain producing 40 per cent butyric acid was obtained by the repetition of the anaerobic cultivation without adoption of the heat-shocking method. The sugar of high concentration was not successful in relation to the yield of the butyric acid.
Also it was aimed to activate Clost, butyricum var, immobile, but not so effective with culture media containing natural substances so far as used.View full abstractDownload PDF (542K) -
Part V. On the Formation of Lactic AcidToshinobu ASAI, Eitaro KOMATSU1950 Volume 23 Issue 7 Pages 281-285
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSIt was found that the lactic acid formation by the butyric acid bacteria formerly isolatedd resulted from the concomitance of lactic acid bacteria. They were killed by heating at 100°C for one minute, or by stocking in. soils or sands for a long time. The concomitance of the lactic acid bacteria brought the diminution of the acetic acid production, particularly when the active butyric acid bacteria were used. These lactic acid bacteria are of the hetero type. The catalase reaction was positive. Besides the lactic acid they produced a small quantity of acetic acid and ethyl alcohol and a considerable quantity of unknown substance. No gas was formed.View full abstractDownload PDF (476K) -
I. Bereitung der Lävulinsäure aus Zucker mit Säure unter dem DruckSumio SHIMIZU, Sankichi TAKEI1950 Volume 23 Issue 7 Pages 286-288
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSNach unserer wiederholten Untersuchungen können wir als eine besten Bedingung für, Lävulinsiiuredärstellung aus Zucker nachfolgenden Data empfehlen. 100g Zucker (Sucrose) werden mit 2000cc Salzsäure (1.5%) unter dem Druck auf 170° eine Stunde gekocht, so erhält man 44g Lävulinsäure (64% d. Th.), 12 g Ameisensäure and 13g Huminsubstanz.View full abstractDownload PDF (264K) -
II. Synthese einiger Cyclopentanverbindungen aus LävulinsäureSummio SHIMIZU1950 Volume 23 Issue 7 Pages 288-294
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSVon LävuIinsäure-äthylester ausgehend wurde mii Na-alkoholat 1-Methylcyclopentadien, (1.3)-3-propionsäure-4-carbonsäure (II) hergestellt, die durch Erhitzen in die 1-Methylcyclo-pentadien (1.3)-3-propionsäre (III) decarboxyliert wurde. (III) wurde durch katalyt. Hgdrie-rung in 1-Methylcyclopenten (2)-3-propionsäure (IV) umgewandelt, die besitzt eine pflanzliche Hormonwirkung wie'Auxin. Der weiterer Hydrierungsprodukt (V) zeigt aber keine Hormon-wirkung mehr.
K-Salz der Lävulinsaure (VII) liefert durch Elektrolyse ein Diketon (VIII), Oktadion-2.7, . in guter Ausbeute (60%), das wandelt mit konz. H.SO4 in 1-Methyl-2-acetylcyclopenten-1 (IX) um (Ausbeute 75%). Von diesem wurde durch NaOBr-Oxydation 1-Methylpenten (1)-2-carbon-säure (X) and durch katalyt. Hydrierung 1-Methyl-2-acetyl-pentan (XII) hergestellt. Der letzter liefert durch NaOBr-Oxydation 1-Methy-penten-2-carbonsäure (XI), die auch aus 1-Methylpenten (1)-2-carbonsäure (X) durch katalyt. Hydrierung gewonnen wurde.View full abstractDownload PDF (640K) -
Part IX. Paper Partition Chromatography of Hydroxamic AcidsYoshiyuki INOUYE, Manjiro NODA1950 Volume 23 Issue 7 Pages 294-298
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSIn the present study we have applied the method of paper chromatography to the separation and identification of fatty acids by means of the sensible color reaction of hydroxamic acids, which were obtained from fatty acid esters by reaction with hydroxylamine. As the chromogenic reagent 10% ferric chloride solution in alcohol was used n-butyl alcohol, ethyl acetate and butyrone gave the best results as the solvents. Rf values for thirteen hydroxamic acids derived from saturated C2-C22 fatty acids were determined. Especially, such hydrox-amic acids as lower than caprihydroxamic acid can be perfectly separated from each other and identification of each acid can also be carried out accurately with ease.. Therefore we believe that this method may be a very useful tool in separating and analyzing constituents of the mixtures of lower fatty acids.View full abstractDownload PDF (144K) -
Hidetsugu FUWA, Ken'ichi TAKAOKA, Ziro NIKUNI1950 Volume 23 Issue 7 Pages 299-304
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe so-called “amylosynthease” was discovered by S. Nishimura (1930), and was developed by T. Minagawa (1932). They considered that the enzyme synthesized starch from soluble glutinous rice starch or from various dextrins. But it is yet doubtful whether the enzyme is really “synthease” or not.
Comparing x-ray diffraction patterns and some other properties of the polysaccharides pre-pared from corn dextrin and from soluble glutinous rice starch by yeast “amylosynthease” with those of their substrates and Kerr's amylose, the following results were obtained:
1. The resulted polysaccharide is very'similar in structure to amylose component of corn starch.
2. It was confirmed that “amylosynthease” breaks down α-1, 6-glucosidic linkages as proposed by Maruo and Kobayashi.
3. The possible mode of the action of “amylosynthease” is discussed in comparison with cross-linking enzyme.
The previous experiments referring to the so-called “amylosynthease” is reviewed briefly.View full abstractDownload PDF (1215K) -
Part I, The Relationship between the Growth of Lactobacillus acidophilus and the Composition of Medium (1)Ichiro YOSHIHARA1950 Volume 23 Issue 7 Pages 305-309
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (410K) -
Part II. Concentration of Soluble CarbohydratesSin'itiro KAWAMURA1950 Volume 23 Issue 7 Pages 310-315
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (517K) -
Part I. An Experiment on the Saccharification of Wood aiming the Industrial ProductionShinzo YOSIMURA, Tatsuro OGURA1950 Volume 23 Issue 7 Pages 316-320
Published: February 01, 1950
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe authors intened to put on record an industrial large scale experiment of the saccha-rification of wood. A 200m3 digester of a sulfite rayon pulp mill was utilized as a percolator. The woods used as raw materials were Japanese red pine and cedar. (See Table 1 and 2. General method of Scholler-Tornesch process was modified to comform to the working condition of the digester. Temparature; pressure, time of reaction, and the properties of the sugar solution of each percolation, etc. are shown in Table 3 and 4. Sugar solution obtained was held in two 200m3 reclaiming tanks and tested. See Table 5. The result of this analysis showed that the yield of reducing sugar was more than 30 percent.View full abstractDownload PDF (489K)
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