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Volume 56, Issue 3
Displaying 1-8 of 8 articles from this issue
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Keiko KATSUTA, Isao HAYAKAWA, Danji NOMURA1982 Volume 56 Issue 3 Pages 189-194
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe spinning mechanism of soy protein “dope” (alkali-denaturated protein solution) depends upon relaxation phenomenon. Hence, the relationship between spinnability and rheological properties was examined in this study. In the range of 15_??_30% protein concentration the spinnability of dope was influenced by the ratio of protein to sodium hydroxide. Dope prepared with 20_??_25% protein concentration and 0.1_??_2.0% NaOH especially showed excellent spinnability.
In dynamic viscoelastic behaviour, log aT for the soy protein dope could be expressed by the WLF-equation, which proved that “principle of time-temperature reducibility” was applicable to soy protein dope. The storage modulus (G') curve of the gel type dope scarcely depended on frequency log ω=-1.61_??_0.80 (see-1), but excellent spinnable dope showed a “rubber-like flow” region. G' of the sot type dope was located in the higher frequency region than G' of good spinnable dope. These results showed that degradation of soy protein molecular structure was enhanced when the amount of NaOH was increased in preparing the dope. In the case of excellent spinnable soy protein dope, d log G'/d log ω was 1 while that of casein dope was 2, so the molecular distribution of the former was wider than that of the latter.
These conclusions were supported by results in gel filtration chromatograms of soy protein dope and casein dope.View full abstractDownload PDF (416K) -
Kiyoshi EBIHARA, Shuhachi KIRIYAMA1982 Volume 56 Issue 3 Pages 195-202
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSThe protective effect of various dietary fibers (DFs) was investigated on the growth of immature rats fed a purified, low-fiber diet containing toxic doses of sodium iron chlorophyllin (Fe-Ch). The DFs were barley hull, corn husk, wheat bran, alfalfa, “gobo” dietary fiber (GDF), holocellulose, carboxymethyl cellulose, cellulose powder, chitin, chitosan, konjac mannan and brewer's yeast. GDF was prepared from gobo, the root of edible burdock (Arctium lappaL.). Holocellulose was prepared from GDF by delignification with sodium chlorite in a diluted acetic acid medium.
Immature rats fed Fe-Ch at a 2% level in a purified, low-fiber diet containing corn oil as the dietary fat source exhibited a highly retardation in body weight gain, which was counteracted by the concurrent addition of GDF, alfalfa or brewer's yeast at a 10% level in the diet. But other DFs were inactive in counteracting the retardation in body weight induced by Fe-Ch. Immature rats fed a purified, low-fiber diet containing dehydrogenated coconut oil as the dietary fat source and purified, low-fiber, fat-free diet supplemented with Fe-Ch at a 2% level did not show food intake or retarded body weight. Fe-Ch induced and promoted the oxidation of dietary fat. GDF reduced the oxidizing rate of dietary fat, though GDF did not prevent its oxidation. The retardation in body weight induced by Fe-Ch was caused by the oxidation of dietary fat, and mainly by decreased food intake. The protective effect of GDF was based on a decrease in the oxidizing rate of dietary fat and higher food intake.View full abstractDownload PDF (653K) -
Yasuo KONDO, Kazuko MASUDA1982 Volume 56 Issue 3 Pages 203-208
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSChanges were investigated in the phospholipid ratios and the compositions of black matpe (gram) sprouts during germination in the dark. Each phospholipid was isolated and analyzed.
The major lipid fraction at every stage was composed of phospholipids, and the proportions did not change much during germination. Eleven component lipids in the phospholipid fraction were identified: N-acylphosphatidylethanolamine (APE), N-acyllysophosphatidylethanolamine (AL-PE), diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), phosphatidylcholine (PC), lysophosphatidylethanolamine (LPE), phosphatidylinositol (PI), phosphatidylserine (PS), lysophosphatidylcholine (LPC) and phosphatidic acid (PA). At each stage PC, PE and PI were the major component lipids.
Although changes in the rates of PC and PE were slight, PI and APE decreased greatly at the early periods of germination. DPG, PG and ALPE tended to increase after germination. In each phospholipid the major component fatty acids were linolenic, linoleic and palmitic acid. Among others, linoleic acid increased remarkably after germination, whereas linolenic and oleic acid were inclined to decrease. The N-acyl radical of the APE molecule in germinating black matpe characteristically consisted of unsaturated fatty acids.View full abstractDownload PDF (1861K) -
Tomoko MATSUMOTO, Toshio KAYA1982 Volume 56 Issue 3 Pages 209-212
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSFree amines were found in 31 plants by paper electrophoresis and paper chromatography. Agmatine was detected in taro and komatsuna (seedling), histamine in eggplant, tomato and spinach, putrescine in passion fruit and cycad, serotonin in banana and tomato, and dopamine in banana. Ethanolamine and tyramine were found to be widely distributed in plants of this study.View full abstractDownload PDF (288K) -
[in Japanese]1982 Volume 56 Issue 3 Pages 235-237
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (223K) -
N. Y.1982 Volume 56 Issue 3 Pages 238-240
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (279K) -
[in Japanese]1982 Volume 56 Issue 3 Pages 240-241
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (199K) -
G. Charalambous1982 Volume 56 Issue 3 Pages 242-244
Published: 1982
Released on J-STAGE: November 21, 2008
JOURNAL FREE ACCESSDownload PDF (270K)
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