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Volume 27, Issue 9
Displaying 1-13 of 13 articles from this issue
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Toshifumi FUKUDA1963 Volume 27 Issue 9 Pages 601-609
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSHatchlings of the eri-silkworm (Philosamia cynthia ricini), one of the leaf-feeding insects, may be reared to the adult stage on an artificial diet, named as a semi-synthetic diet, which does not contain any extracts from leaves of food plants such as Ricinus communis, Aylanthus glandulosa etc., not to mention the powder of dry leaves of these plants. The composition of the present semi-synthetic diet was ‘kinako’(a powder of parched soy bean), sucrose, dry brewer yeast, β-sitosterol, L-ascorbic acid, agar-agar, sodium dehydroacetate as an aseptic and water. Though the present semi-synthetic diet leaves room for improvement, at any rate the diet enabled 48 out of 100 hatchlings to spin their cocoons. Therefore the present (or improved) semi-synthetic diet has opened a way to make possible to rear eri-silkworms all the season with the omission of the cultivation of food plants, such as Ricinus communis, etc. In developing this diet ascorbic acid was shown to be essential for eri-silkworms, and it was also found that sucrose stimulated feeding by this insect in addition to its metabolic importance.View full abstractDownload PDF (1385K) -
Part IV. Effects of Salt Formation and Steric ConfigurationYoshiki SAKATA, Kuniharu TAKENOUCHI1963 Volume 27 Issue 9 Pages 610-614
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSThe behaviors of impurities on the crystallizations of the free acid and the hydrochloride, monosodium, zinc, calcium and barium salts of L-glutamic acid were examined, and a tendency was recognized that coexisting impurities were apt to be taken into the crystals when the crystallization proceeded from the zwitterion, i.e., Glu.± or Glu.-±The adsorption of L-tyrosine was compared when L, D and DL-glutamic acid were crystallized with coexistence of L-tyrosine, and an effect of more or less extent of steric configuration on its behavior could be recognized.View full abstractDownload PDF (685K) -
Part VII. Enthalpy Differences between the α- and β-CrystalsYoshiki SAKATA, Kuniharu TAKENOUCHI1963 Volume 27 Issue 9 Pages 615-618
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSThe enthalpy differences between the α- and β-crystals of L-glutamic acid were measured and ΔH α-β of -75, -95, 8 and 27±20cal./mol. were obtained at temperatures of 5, 15, 30 and 40°C, respectively. From this result, it was found that the α-form is the more stable form in solid phase at temperatures lower than 30°C and vice versa when higher than 30°C, though the α-form had been found to be the Iess stable form as the saturating body in the aqueous solution in all range of temperature.View full abstractDownload PDF (456K) -
Part II. Successive Dephosphorylation of myo-Inositol Hexaphosphate by Wheat Bran PhytaseYasutoyo NAGAI, Saburo FUNAHASHI1963 Volume 27 Issue 9 Pages 619-624
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSmyo-Inositol mono-, di-, tri-, tetra-, and pentaphosphate were prepared by enzymic hydrolysis of myo-inositol hexaphosphate with a 1, 500-fold purified phytase preparation from wheat bran and the subsequent Dowex 1 column chromatography. Relative initial rates of hydrolysis of these inositol phosphates by phytase were nearly the same each other and the activation energy of hydrolysis was about 11, 000 cal. per mole for all these substrates. Km values did not vary widely with the substrates. The hydrolysis of inositol phosphates proceeded in a complicated way, except inositol monophosphate, where the reaction was of the first order. The enzyme hydrolyzed the substrates in the manner that removed phosphate group of them one by one. When mixed substrate was used the enzyme showed a preferential attack on the highest member of the phosphates present. From the mixed substrate test, it was concluded that wheat bran phytase is a single enzyme.View full abstractDownload PDF (798K) -
Yasuhiko TAZUKE, Hideaki YAMADA1963 Volume 27 Issue 9 Pages 625-632
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSAn enzyme catalyzing the ribosyl group transfer from inosine to adenine was purified from Aerobacter cloacae No.172-1 by means of ammonium sulfate fractionation and DEAE-cellulose and hydroxylapatite column chromatographies. A. cloacae was found to have much activities of this enzyme in its cell free extract. The enzyme activity was increased about 90-fold. By using the purified enzyme, some properties of the reaction were investigated. The enzyme was considerably stable and essentially required inorganic orthophosphate for the reaction. It was suggested that the enzyme might be a purine nucleoside phosphorylase and that the reaction might be a coupled reaction with ribose-1-phosphate as an intermediate. The enzyme could not transfer the ribosyl group between purine and pyrimidine bases.View full abstractDownload PDF (1213K) -
Part VII. Nuclear Magnetic Resonance (NMR) Spectra of 19-Hydroxysteroids and their Application to Microbiological 19-Hydroxylation of SteroidsTakeshi TAKAHASHI1963 Volume 27 Issue 9 Pages 633-638
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSSome features of the NMR spectra of 19-hydroxy- and 19-acetoxy-steroids were presented and by making use of the features an unknown product of a microbiological transformation of 17α, 20α, 21-trihydroxypregn-4-en-3-one was easily characterized as a 19-acetoxysteroid.View full abstractDownload PDF (651K) -
Part VIII. 19-Hydroxylation of 17α, 20α, 21-Trihydroxypregn-4-en-3-one by Pellicularia filamentosa f. s. microsclerotiaTakeshi TAKAHASHI1963 Volume 27 Issue 9 Pages 639-646
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSPellicularia filamentosa f.s. microsclerotia which is known to effect 19-hydroxylation of cortexolone has converted 17α, 20α, 21-trihydroxypregn-4-en-3-one into 17α, 19, 20α, 21-tetrahydroxypregn- 4-en-3-one and 11β, 17α, 20α, 21-tetrahydroxypregn-4-en-3-one with conversion ratios of one to four and one to seven, respectively while the microorganism mainly converted hydrocortisone into a reduced product, 11β, 17α, 20β, 21-tetrahydroxypregn-4-en-3-one with a small conversion ratio. As a result it has been concluded that 19- and 11β-hydroxylation catalyzed by the microorganism are hardly affected by a slight difference at the side chain of substrates but the 19-hydroxylation is almost completely prevented by the presence of a hydroxyl group at the 11β-position.View full abstractDownload PDF (1096K) -
Synthese de la Lactone d'Acide Hydroxymethyl-3 Trimethoxy-4, 5, 7 Naphtoique-2 (un Isomere de Dimethyl α-Sorigenin)Masanao MATSUI, Yôichi NAKATANI, Yasuki MORI, Zirô NIKUNI1963 Volume 27 Issue 9 Pages 647-649
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSThe synthesis of 3-hydroxymethyl-4, 5, 7-trimethoxy-2-naphthoic acid lactone (II) is described.View full abstractDownload PDF (415K) -
Masanao MATSUI, AKIO NOBUHARA1963 Volume 27 Issue 9 Pages 650-652
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSSynthesis of 9-β-D-glucopyranosyl-adenine-6'-phosphate is described. The method developed here involves the process of condensation of base (chloromercuri-6-benzamidopurine)(I) with phosphorylated sugar (2, 3, 4-tri-O-acetyl-6-diphenylphosphoryl-α-D-glucopyranosyl bromide)(II). This reaction gives crystalline 6-benzamido-9-(2', 3', 4'-tri-O-acetyl-6'-diphenylphosphoryl-β-D-glucopyranosyl)-purine (III) in high yield, which is converted to the desired nucleotide by alkaline hydrolysis.View full abstractDownload PDF (423K) -
Part I. Preparation of Pyridazyl EthersSaburo TAMURA, Teruomi JOJIMA1963 Volume 27 Issue 9 Pages 653-658
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSSeries of 3-chloro-6-phenoxy-and 3, 6-bisphenoxypyridazines were prepared from 3, 6-dichloropyridazine to be evaluated as herbicides. Certain thioethers were also prepared.View full abstractDownload PDF (814K) -
Matazô ABE, Saburô YAMATODANI, Tôgo YAMANO, Yoshihar ...1963 Volume 27 Issue 9 Pages 659-662
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSDownload PDF (438K) -
Sadao SAKAMURA, Susumu WATANABE, Yataro OBATA1963 Volume 27 Issue 9 Pages 663-665
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSDownload PDF (2020K) -
Formation of Erycitrin, a New Red-colored Glycoside, having a Benzotropolone NucleusYoshinori TAKINO, Hiroshi IMAGAWA1963 Volume 27 Issue 9 Pages 666-668
Published: 1963
Released on J-STAGE: February 07, 2011
JOURNAL FREE ACCESSDownload PDF (244K)
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