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Volume 49, Issue 9
Displaying 1-13 of 13 articles from this issue
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Hiromichi MATSUBARA, Yoshihiko OBARA, Noboru KUBA1975 Volume 49 Issue 9 Pages 439-443
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe feeding experiments were carried out on male baby chicks of Warren-Sex-Sal-Link-F strain with 19 kinds of s-triazine herbicides and their related compounds.
All compounds with substituted hydroxyl and thiol groups on 2-position of s-triazine skeleton except hydroxypropazine and hydroxytrietazine did not show marked acute oral toxicity on chicks, but the others showed considerable toxicity. When the content of s-triazines in feeds was 3_??_5%, all compounds except ammeline did not cause blindness against baby chick.
Therefore, it was presumed that the extent of metabolism from s-triazine herbicides and their related compounds to ammeline through several pathways such as hydrolysis of substituted chlorine, desalkylation of N-monoalkyl N, N-dialkyl and O-methyl groups or hydroxylation of thiol, thiomethyl and amino groups of compounds were not probably performed up to the level which reveals blindness.View full abstractDownload PDF (359K) -
Seiichi NONOMURA, Ryotaro KOTANI, Heiichi SAKAI1975 Volume 49 Issue 9 Pages 445-448
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSSeveral different bacteria which can utilize ε-caprolactam and its oligomers as sole sources of carbon and nitrogen have been isolated from a soil in the Nylon-6 manufacturing plant (Tsuruga Nylon Plant, Toyobo Co., Ltd.). Two strains of the bacteria isolated, based on their morphological and physiological observations, were identified as Alcaligenes lactamlyticus nov. sp. and Achromobacter xerosis nov. var. lactamlyticus, respectively.View full abstractDownload PDF (1050K) -
Eiji NIWA, Teruo NAKAYAMA, Iwao HAMADA1975 Volume 49 Issue 9 Pages 449-453
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSAC-bridge (1 MHz) was prepared in order to investigate the behavior of water in fish flesh sol at the gelation and change in the dielectric constant of the sol upon heating was measured, which was obtained from jack mackerel and dolphin-fish respectively. And the following results were obtained.
1) For jack mackerel, the dielectric constant decreased upon heating at 40°C, whereas it was unchanged under the presence of 10% (w/w) sucrose. An elastic gel was obtained in the former case and a viscous and brittle one was obtained in the latter. Upon heating at 60°C, the dielectric constant increased after significant decrease and the sol was liquified. However, the dielectric constant decreased scarcely under the presence of 10% sucrose at this temperature and a brittle gel was obtained.
2) For dolphin-fish, the dielectric constant decreased upon heating at 40°C more slightly than in the case of jack mackerel and a brittle gel was obtained. The decrease in the dielectric constant was more significant at 60°C than at 40°C and a resulting gel was elastic at the former temperature.View full abstractDownload PDF (374K) -
Tatsuo FUJIKAWA, Katsuko NAKASHIMA1975 Volume 49 Issue 9 Pages 455-461
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSIn order to clarify the occurrence of fucoidan and fucoidan analogues in Phaeophyta, sulphated polysaccharides extracted with hot water from 21 species of brown seaweeds and then collected with CPC were examined in their yield, content of fucose, uronic acid (as glucuronic acid), as well as sulphate, and behavior on the electrophoresis.
The yields of the sulphated polysaccharides were much varied from trace (Agarum cribrosum) to 14.6% (Nemacystus decipiens) and were 5_??_10% in the majority of cases.
Contents of fucose which was contained in all the sulphated polysaccharides were from 10 to 40% in large number of species. However, there was also a case of extremely small content (2.3%) as a sulphated polysaccharide from sporophyll of Alaria crassifolia.
It was indicated that sulphated polysaccharides which contain sulphated monosaccharides besides sulphated fucose or which are constructed from sugar other than fucose are also distributed widely, because of the sulphate content more than 2 mole to 1 mole of fucose.
The sulphated polysaccharides migrated in distance from 3 to 6cm on the electrophoresis and the half of them were separated in 2 or 3 fractions. However, the several sulphated polysaccharides showed remarkably different behavior.
In conection with the classification of alga, the sulphated polysaccharides from Chordariales (5 species), Laminaria (3 species), and Kjellmaniella (1 species) in Laminariales were considered to be simple fucan sulphate constructed mostly from fucose. On the other hand, it seemed that the sulphated polysaccharides from Eisenia, Undaria, and Alaria in Laminariales (each 1 species), and Fucales (4 species) have more complicated construction.View full abstractDownload PDF (547K) -
Kazuki SHINOHARA, Yaw-Kun TSENG, Kwang Jee JOO, Fumihiro UCHINO, Hiroh ...1975 Volume 49 Issue 9 Pages 463-468
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe condensation product (TR-Trp) of triose reductone (TR) with tryptophan (Trp) was obtained by heating the reaction mixture, which was prepared first by dissolving completely 0.5M Trp in 0.2 N HCl and then by adding equimolar TR, at 90°C for 1 hr through a nitrogen gas.
The properties of the product were examined by measuring elemental composition, melting point, UV spectrum, paper chromatogram, IR spectrum, NMR spectrum and polarogram, and it was shown that TR-Trp had the similar properties and structure to the condensation products between TR and other amino acids isolated before.View full abstractDownload PDF (436K) -
Norio NAKAMURA, Yuji ARAI, Yozo IWANAMI1975 Volume 49 Issue 9 Pages 469-474
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSSome properties of sucrose synthetase and invertase extracted from mature pollen grains of the different plants were examined. In sucrose synthetase, each maximum activity resulted in pH ranges from 8.0 to 8.5 and in temperature ranges from 55 to 60°C. The activity was promoted by Mn2+, Ca2+, and Mg2+, but inhibited by Zn2+, Cu2+, and Co2+. The Km value of this enzyme for fructose was remarkably higher than that for UDP-glucose in all the species but Pinus thunbergii. Similar tendency in these properties was observed at least in all the species but one; the activity could not detected in Impatiens balsamina. In invertase, the maximum activity in each species resulted in pH ranges from 4.0 to 7.1 and in temperature ranges from 35 to 45°C. The activity was inhibited by Mn2+.View full abstractDownload PDF (466K) -
Hiroki MURAKAMI, Sanetaka SHIRAHATA, Koji YAMADA, Hirohisa OMURA1975 Volume 49 Issue 9 Pages 475-479
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSIn order to elucidate the catalytic activity of nucleic acid components on the oxidation of aromatic reductones with Cu2+, we attempted kinetic analyses of the adenine-Cu2+-catalyzed oxidation of noradrenaline, for adenine had the most remarkable stimulative potentiality among the nucleic acid components examined.
1. For the stimulative effect of adenine on the oxidation of ;noradrenaline with Cu2+, the removal of dissolved oxygen by N2 gas was initially ineffective, and then supressed the oxidation by the prolonged reaction.
2. The oxidative reaction at initial stage through N2 gas represented a typical Michaelis-Menten type behavior. It was clear that noradrenaline was oxidized by the sequential type mechanism of the random ordered system in which adenine and noradrenaline could bind to Cu2+ both independently and in any other order, resulting in the formation of a mixed ligand complex. Two pathways were possible to conform the mixed complex, as shown in the text. The predominant one could be deduced from the equilibrium constants experimentally determined. In that pathway, noradrenaline first combined with Cu2+, then followed by adenine. 2, 2'-Bipyrydine, which is known to form a similar complex with o-diphenol and Cu2+, never accelerating but supressing the oxidation of noradrenaline indicates that the catalytic activity of nucleic acid components depend on their different properties from 2, 2'-bipyrydine.View full abstractDownload PDF (422K) -
Kiyoshi TATSUMI, Shozo OHBA, Ichiro NAKAJIMA, Kuniharu SHINOHARA, Gose ...1975 Volume 49 Issue 9 Pages 481-489
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSEffects of several melting salts on the state of dispersion of casein were investigated with the use of ultraviolet difference spectra and ultracentrifugal analysis.
Sodium caseinate was associated by the addition of orthophosphate or citrate. This association might be resulted from the high ionic strength.
Higher condensed phosphates, such as meta-or polymetaphosphate, dissociated sodium caseinate and the extent of the dissociation was depended on the degree of condensation. From the polyanionic nature of these salts, it might be reasonable to consider that these salts interacted with the cationic sites of casein molecule.
Pyro-, tripoly-or tetrapolyphosphate was revealed to have both abilities to dissociate and associate casein at lower and higher concentrations, respectively. The ionic strength as well as the degree of condensation might be responsible for the reaction.
Each melting salt except orthophosphate dissociated calcium caseinate. This was attributed to the conversion of calcium caseinate into sodium form through the ion exchanging property of the melting salt. Meta-and polymetaphosphate at higher concentration dissociated casein to a greater extent than the other salts. These phenomena were discussed on the basis of their properties to bind calcium and to dissociate casein.
Orthophosphate caused the extreme association of calcium caseinate at the definite concentration, which might be due to the formation of cross linkage of calcium phosphate between casein molecules.View full abstractDownload PDF (667K) -
Tôru NAGASAWA, Kazuyasu UMEMOTO, Tomoyuki TSUNEYA, Minoru SHIGA1975 Volume 49 Issue 9 Pages 491-493
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe constituents in the essential oil of Mentha gentilis (L.), “Yahatamint” (one of the wild species) known to distribute in Tokai area were investigated.
The oil collected in August contained (+)-pulegone and (-)-menthone as the major components. The oil collected in November showed a decrease of pulegone (42.3→0.3%) compared with the former, whereas(+)-neomenthol(6.2→31.4%) and (+)-neomenthyl acetate (1.5→11.2%) increased. On the other hand, (-)-camphor (1.1%) was newly found from the oil in June, and (-)-borneol (2.5%) and (-)-bornyl acetate (2.8%) were also detected from the oil in November.
On the basis of seasonal variation of these components, the chemotaxonomical characteristics of this strain were described.View full abstractDownload PDF (212K) -
Choemon KANNO, Kunio YAMAUCHI, Tomokichi TSUGO1975 Volume 49 Issue 9 Pages 495-497
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSIt was tried to simplify the determination of tocopherols in milk fat on ferric chloride and batho-phenanthroline reaction, because most tocopherol (95%) was α-type. FeCl3-reducing substances other than tocopherols were determined with the same procedure as tocopherol described by us previously. Unsaponifiable matter corresponding to the total FeCl3-reducing substances was fractionated by eluting with petroleum ether, benzene, and ethanol, in that order, through Florisil column. FeCl3-reducing substances calculated as α-tocopherol were distributed approx. 21% in the petroleum ether, 60% in the benzene containing all of tocopherols, and 19% in the ethanol fraction. The benzene fraction was further separated on silicagel G thinlayer chromatography and α-and ϒ-tocopherol were determined. Total tocopherol content was approx. 45.0% (40_??_60%) of total FeCl3-reducing substances and approx. 76.5% (64_??_88%) of that of the benzene fraction. It was conclusively found that there was a difficulty to simplify the determination procedure of tocopherol in milk fat and, unless FeCl3-reducing substances other than tocopherols was removed, the determined values give erroneous high values. It is desirable to determine tocopherols separated from other FeCl3-reducing substances by means of thin-layer chromatography in order to obtain the more correct values, although it is somewhat troublesome in the technique.View full abstractDownload PDF (211K) -
1975 Volume 49 Issue 9 Pages N108
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (45K) -
Tei YAMANISHI1975 Volume 49 Issue 9 Pages R1-R9
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (599K) -
Sanae TAHARA1975 Volume 49 Issue 9 Pages R11-R17
Published: 1975
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (607K)
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