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Volume 56, Issue 12
Displaying 1-14 of 14 articles from this issue
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Goro YABUTA, Kenji MORI1982 Volume 56 Issue 12 Pages 1121-1125
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSFive β-substituted δ-lactones were synthesized and two were optically active. The synthesized lactones were 3-methyl, 3-isopropyl, 3-phenyl, (R)-3-methyl and (R)-3-isopropyl valerolactone. They were converted into hydroxyamide with (R)-(+)-α-naphthyl ethylamine. Then, the amides were analyzed by HPLC. HPLC was a suitable procedure for determinating their optical purity.View full abstractDownload PDF (336K) -
Shigeshi TAKESUE, Kazuko ISHIBASHI, Kenji WATANABE1982 Volume 56 Issue 12 Pages 1127-1134
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSA formaldehyde (HCHO)-oxidizing bacterium, named E-20 strain, was isolated from sewage mud. It was identified as belonging to the genus Pseudomonas. The minimum inhibitory concentration of HCHO against this strain was about 1.0mg/ml. This strain grew after consuming HCHO in growth medium containing glucose and HCHO. This strain did not utilize HCHO as a carbon source, but oxidized it to formic acid, which was successively decomposed. In addition, washed cells of this strain consumed oxygen in the reaction mixture during the oxidation of HCHO. The optimal oxidation of HCHO by the cells was obtained at pH 7_??_8 and 40°C. On the other hand, the optimum pH for decomposition of formic acid was about 5.5. The initial velocity of HCHO decomposition was directly proportional to HCHO concentration up to 3.0mg/ml. The velocity constant (k) was about 0.9/hr.View full abstractDownload PDF (1224K) -
Fumiki YOSHIZAKO, Atsuo NISHIMURA, Teruo UENO1982 Volume 56 Issue 12 Pages 1135-1141
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSAspergillus fumigatus ATCC 28282 metabolized DL-phenylalanine by two pathways involving 2, 5-dihydroxyphenylacetic acid and 2, 6-dihydroxyphenylacetic acid as key intermediates. DL-phenylalanine was successively degraded to phenylpyruvic acid, phenylacetic acid and o-hydroxy-Phenylacetic acid by this fungus. 2, 5-Dihydroxyphenylacetic acid and 2, 6-dihydroxyphenylacetic acid were formed from phenylalanine via o-hydroxyphenylacetic acid. m-Hydroxyphenylacetic acid was formed from phenylacetic acid and converted to 2, 5-dihydroxyphenylacetic acid. It was found that 2, 5-dihydroxyphenylacetic acid was also formed from L-tyrosine and p-hydroxyphenyl-pyruvic acid, although DL-phenylalanine was not converted to tyrosine. 3, 4-Dihydroxyphenylacetic acid was formed from tyramine and p-hydroxyphenylacetic acid.
The conversion activity of phenylalanine to 2, 5-dihydroxyphenylacetic acid and 2, 6-dihydroxy-phenylacetic acid via o-hydroxy-phenylacetic acid was widely present in strains of Aspergillus tested.View full abstractDownload PDF (1214K) -
Keiko KATSUTA, Isao HAYAKAWA1982 Volume 56 Issue 12 Pages 1143-1147
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe viscoelastic value of soy protein dope was directly proportional to alkali concentration up to pH 11 and reached a maximum at around pH 11, but decreased rapidly when pH was higher than 11.5. On the other hand, the dope sulfhydryl content decreased gradually with increasing alkali concentration, reaching a minimum at around pH 11, and increased rapidly when the pH was higher than 11.5.
The dope viscoelastic value increased but sulfhydryl content decreased with a laps in time up to pH 11. This phenomenon was reversed when the pH was higher than 11.5. A dope, reached the maximal viscoelastic value at around pH 11, did not change further.
The results showed that soy protein molecules were unfolded, entangled and then crosslinked in increasing alkali concentration, and were changed into gel. The most rigid gel formed around pH 11, and when the alkali concentration was further increased, the secondary structure of soy protein was broken and the network structure disintegrated.View full abstractDownload PDF (366K) -
Kenji NAKAJIMA, Takanori HIGASHIHARA, Akio SATO, Seiichi FUKUOKA, Masa ...1982 Volume 56 Issue 12 Pages 1149-1153
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSAlternating cooligomers (trimers) of 1, 3-butadiene and propylene or 1-butene, and their derivatives were submitted to microbial conversion by hydrocarbon-oxidizing Nocardia sp. BPM 1613. Of these oligomers, 3-methylundecane was utilized by this strain as the sole source of carbon, and two oxidation products accumulated in the culture broth. The products were extracted with diethyl ether and isolated by preparative thin-layer chromatography on silica gel. These products were determined as 3-methylpentanoic acid and DL-3-hydroxy-3-methylpentanoic acid on the basis of IR, NMR and mass spectra examinations.
n-Hexadecane-grown cells of BPM 1613 strain produced an oxidation product from 2-methyl-2-nonanol, which was not utilized in growth of the strain. The product was extracted with diethyl ether from the culture broth and isolated by column chromatography on silica gel. The structure of this product was determined as a new compound, termed 8-hydroxy-8-methylnonanoic acid.View full abstractDownload PDF (394K) -
Koji YAMADA, Setsuko KIKUCHI, Yoshiko SATO, Ryuji HIRANO1982 Volume 56 Issue 12 Pages 1155-1158
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSIn earlier studies total lipids and triglycerides were markedly increased in the liver of Sprague-Dawley rats fed a rice diet and in Donryu rats fed a rice diet supplemented with lysine. The study here was conducted to examine the effect of dietary fibers, such as cellulose, pectin, guar gum or konjac mannan, on the liver lipid accumulation of male Sprague-Dawley rats fed a rice diet and male Donryu rats fed a rice diet supplemented with 0.3% lysine-HCl. Each type of dietary fiber was added at 2% to the rice diet and at 5% to the rice diet supplemented with lysine. Rats were fed ad libitum for 21 or 30 days. The liver lipid content of Sprague-Dawley rats fed a rice diet with cellulose, pectin, guar gum or konjac mannan was significantly lower than in rats fed the same diet without dietary fiber. In Donryu rats fed a rice diet supplemented with lysine, the liver lipid content was significantly reduced by the addition of pectin, guar gum or konjac mannan, but not influenced by cellulose. The liver lipid reduction in rats receiving supplementary fiber was mainly due to a decrease in triglyceride. These results indicate that dietary fibers, such as pectin, guar gum or konjac mannan, depress liver lipid accumulation in both animal strains, but that the effect of cellulose differs between Sprague-Dawley and Donryu rats.View full abstractDownload PDF (285K) -
Tasuku NAKAJIMA1982 Volume 56 Issue 12 Pages 1159-1165
Published: 1982
Released on J-STAGE: November 21, 2008
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Tetsu ANDO1982 Volume 56 Issue 12 Pages 1167-1173
Published: 1982
Released on J-STAGE: November 21, 2008
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Sin'itiro KAWAMURA1982 Volume 56 Issue 12 Pages 1199-1202
Published: 1982
Released on J-STAGE: November 21, 2008
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N. Y.1982 Volume 56 Issue 12 Pages 1203-1204
Published: 1982
Released on J-STAGE: November 21, 2008
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[in Japanese]1982 Volume 56 Issue 12 Pages 1204-1206
Published: 1982
Released on J-STAGE: November 21, 2008
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[in Japanese]1982 Volume 56 Issue 12 Pages 1206-1208
Published: 1982
Released on J-STAGE: November 21, 2008
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[in Japanese]1982 Volume 56 Issue 12 Pages 1209-1211
Published: 1982
Released on J-STAGE: November 21, 2008
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[in Japanese]1982 Volume 56 Issue 12 Pages 1211-1214
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (1094K)
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