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Volume 32, Issue 4
Displaying 1-8 of 8 articles from this issue
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Yoshio ISHII1983 Volume 32 Issue 4 Pages 191-201
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
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Tadahisa NAKAZAWA1983 Volume 32 Issue 4 Pages 202-206
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
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Akihiko NAGAO, Megumi YAMAZAKI1983 Volume 32 Issue 4 Pages 207-212
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSFatty acid composition and phospholipid composition of microbial cells for animal feed were determined. Cyclopropane fatty acids were detected in the lipids of Methylomonas methanolis and comprised about 19% of total fatty acids. Lipids of Pichia aganobii and Candida ethanothermophilum contained oleic, linoleic, and α-linolenic acids, and showed a higher degree of unsaturation than those of bacteria. A significant amount of medium chain length fatty acids was present in brewer's yeast. All of the monoenoic acids of yeast cells were Δ9 acids.View full abstractDownload PDF (907K) -
Alkaline Fading Rate of Triphenylmethane Dye in the Presence of Amphoteric SurfactantHisao HIDAKA, Hayashi KUBOTA, Shuji YOSHIZAWA1983 Volume 32 Issue 4 Pages 213-218
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSThe fading rate of triphenylmethane dye, crystal violet (CV), in an alkaline solution has been measured in the presence of amphoteric surfactant micelles by following the decrease in the maximum of the visible absorption spectrum of CV. The amphoteric surfactant used, N- (2-hydroxydodecyl) -N- (2-hydroxyethyl) -β-alanine (HAA), can exist in three different forms of cationic (C-HAA), zwitter ionic (Zw-HAA), and anionic (A-HAA) types depending on pH value.
The fading was expressed by a pseudo-first order rate and the rate was in the order of C-HAA>A-HAA>Zw-HAA. The surface electrostatic states affected the fading rate occurring in or on micelles.The effect of addition of electrolyte was also examined and the fading was gradually accelerated with increasing concentration of electrolyte.The ratio of CV solubilized in micelles to CV existing the outside of micelles was calculated from the fading rate curves. The solubilization of CV decreased with increasing electolyte concentration.View full abstractDownload PDF (1079K) -
Kaoru INOUE, Hiromichi NOGUCHI, Masanobu HIDAI, Yasuzo UCHIDA1983 Volume 32 Issue 4 Pages 219-226
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSThe aldol condensation of acetophenone with benzaldehyde was carried out at room temperature under phase transfer conditions using dichloromethane and 40% aqueous sodium hydroxide as solvents and benzyltriethylammonium chloride as a catalyst. A new six-membered carbon ring compound, 2, 4-dibenzoyl-1, 3, 5-triphenylcyclohexanol (4) was obtained in a moderate yield. When benzylideneacetophenone was subjected to the same phase transfer conditions, the same cyclic compound was obtained together with benzaldehyde. Based on these results a plausible mechanism has been proposed in which benzylideneacetophenone is an intermediate product. In addition, treatment of (4) with lithium aluminium hydride in boiling tetrahydrofuran and with concentrated sulfuric acid afforded 2, 4-bis (α-hydroxybenzyl) -1, 3, 5-triphenylcyclohexanol and 4, 6-dibenzoyl-1, 3, 5-triphenylcyclohexene, respectively.View full abstractDownload PDF (1372K) -
Plankton of Autumn and Winter SeasonsMitsu KAYAMA, Hiroto OKABA1983 Volume 32 Issue 4 Pages 227-231
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSCopepod plankton were collected in autumn of October 26 to November 1, 1979 and in winter of January 18 to January 26, 1980 at the fifteen stations covering whole area of the Seto Inland Sea.
The first and second dominant genera of copepods were identified. The copepod lipids were extracted, and the lipid class composition was analyzed at every station.
Considering the contents of wax esters among various lipid classes, it is apparent that there is an intimate relation with water depths, namely, the deeper the larger. There is also similar tendency in the relation with salinity.
Accordingly, the wax ester contents in lipids are affected by copepods, such as Calanus, Euchaeta, and Paracalanus, which live in rather deeper water with higher salinity from open sea.View full abstractDownload PDF (810K) -
Takashi IIDA, Toshitake TAMURA, Taro MATSUMOTO, Frederic C CHANG1983 Volume 32 Issue 4 Pages 232-233
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSThe carbon-13 NMR signals were assigned for seven oxobile acid methyl esters having one to three carbonyl groups at positions C-3, C-7, and/or C-12 in the 5β-steroid nucleus. The effects of the carbonyl substiuents on the 13C NMR chemical shifts were defined.View full abstractDownload PDF (275K) -
Masato NOMURA, Yoshihito FUJIHARA1983 Volume 32 Issue 4 Pages 234-236
Published: April 20, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSThe hydration of 2-pinene (1), 2 (10) -pinene (2), camphene (3), tricyclene (4), and Δ3-carene (5) with mono-, di-, and trichloroacetic acid in the presence of synthetic zeolites (A-3, A-4, A-5 and F-9) was investigated.
The hydration of (1) and (2) gave α-terpineol (7) as a major product, while (3) gave only isoborneol (8) under optimized conditions. Hydration of (5) gave (7) as a main product with high conversion (98%, at best) and selectivity.View full abstractDownload PDF (456K)
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