油化学
Online ISSN : 1884-2003
ISSN-L : 0513-398X
37 巻 , 9 号
選択された号の論文の13件中1~13を表示しています
  • 湖上 国雄
    1988 年 37 巻 9 号 p. 689-697
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    Various novel fragrance and flavor compounds have been synthesized day by day.
    The inevitable demands on exploitation of new synthetic methods for these compounds are gradually increasing in response to the intense competition in worldwide.
    This review deals mainly with the recent trend of Japanese market and progress on interesting fragrance and flavor compounds.
  • 堀内 正公, 高田 匡子, 森野 能昌
    1988 年 37 巻 9 号 p. 698-703
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
  • 阿部 正彦, 井上 勝憲, 西野 宏, 渡辺 邦洋, 荻野 圭三
    1988 年 37 巻 9 号 p. 704-708
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    Analysis of alkyl poly (oxyethylene) ethers was carried out by HPLC. Nonionic surfactants were well separated regardless of the distribution of the adducted number of ethylene oxides to give chromatographic peaks according to alkyl chain length under certain rigidly controlled eluent conditions. Moreover, the analytical sensitivity of nonionic surfactants with solvent extraction became 20 times without solvent extraction.
    This method should thus prove particularly suited for the analysis of nonionic surfactants in aqueous solution because in view of its simplicity and rapidity of performances.
  • 金子 晃久, 篠田 耕三
    1988 年 37 巻 9 号 p. 709-710
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    The critical composition of a lecithin (containing 1.3 wt% H2O) -hexadecane-ethanol system (20°C) was studied. Lecithin is insoluble in hexadecane but swells considerably in hixadecane (99wt% of hexadecane in lecithin). The vapor pressure of a lecithin-ethanol solution was also studied. From the deviationof Raoult's law, lecithin was found to form aggregates in ethanol. These findings indicate distinct features of lecithin, rarely observed in other surfactants.
  • 藤谷 健, 安藤 久子
    1988 年 37 巻 9 号 p. 711-716
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    Theeffects of phospholipids on the oxidative decompositionand dimerization of d-γ-tocopherol (γ-T) or d-δ-tocopherol (δ-T) during the autoxidation of methyl linoleate (Me-Li) or methyl laurate (Me-La) were investigated.
    The fatty acid methyl esters, which contained tocopherol (0.5 %) and one of following additives (0.01-0.5 %) were oxidized by air under A.O.M. conditions. The additives used in the experiments are as follows : phosphatidylcholine (PC) and phosphatidylethanolamine (PE) as phospholipids, tri-n-butylphosphate (TBP) as a model component of phosphate ester, and tri-n-octylamine (TOA) as that of a nitrogenous base. The amounts of tocopherol and its dimers formed in a reaction mixture were determined by HPLC.
    PC and PE improved the stability of the tocopherol monomer in Me-Li (Figs.-1 and 7) and suppressed the formation of its dimers (Figs.-2, 3, 8 and 9). The total amount of the tocopherol monomer and its dimers was constant regardless of the presence of phospholipids (Figs.-4 and 10). It is thus evident that phospholipids suppress the initial stage of the oxidation of tocopherol, in which tocopherol changes to its dimers, and that they also contribute to the regeneration of the tocopherol monomer from its dimers.
    TBP, by which the stability of tocopherol under the condition of the thermal oxidation was improved, promoted the oxidation of tocopherol (Figs.-1 and 7) and suppressed the dimerization of tocopherol (Figs.-2, 3, 8 and 9) under the autoxidative conditions of Me-Li. The oxidation of tocopherol in Me-Li was promoted by TOA at low concentration (0.01 %). The oxidative decomposition of tocopherol decreased with the concentration of TOA. However, TOA eventually suppressed the oxidation of tocopherol (Figs.-1 and 7) and formed mainly diphenylether type dimed (Figs.-2 and 8).
  • 岡本 隆久, 知見 憲次, 丸山 武紀, 兼松 弘, 新谷 〓, 志村 光雄, 亀井 正治, 藤田 忠雄, 神戸 保, 佐々木 清司, 菅野 ...
    1988 年 37 巻 9 号 p. 717-725
    発行日: 1988/09/20
    公開日: 2010/02/19
    ジャーナル フリー
    The effect of supplementing linoleate as safflower oil was investigated in rats to determine the minimal requirements for amelioration of essential fatty acid deficiency caused by feeding hardened fish oil (HFO). Male rats were fed diets containing 20% HFO for 4 weeks. A portion of HFO was replaced stepwise with safflower oil (1, 3, 5 and 10%). The influence of the oil addition on the physical properties of HFO was also studied by measuring the melting point by 4 different methods and solid fat content (SFC) at 540°C.
    1) The melting points remained unchanged by the addition of safflower oil to ITFO at 10% or less, and the SFC at 540°C did not change essentially addition of the vegetable oil at 3% or less.
    2) The reduction of body weight gain in the HFO group may primarily have resulted from reduction of food intake since no significant change in food efficiency (weight gain/food intake) occurred even when safflower oil was supplemented.
  • 野村 正人, 高田 秀和, 藤原 義人
    1988 年 37 巻 9 号 p. 726-730
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    (+) -2- (4-methyl-3-cyclohexenyl) propionaldehyde (2) as a component of bulgarian rose oil and (+) -2- (4-methyl-3-cyclohexenyl) allyl alcohol (3) were obtained by the oxidation of (+) -limonene (1) with lead tetraacetate. Using (2) and (3), new aromatic chemicals were synthesized.
    The reaction of (2), (+) -2- (4-methyl-3-cyclohexenyl) acrylaldehyde (5) with 1, 1-dimethyl-hydrazine gave (+) -2- (4-methyl-3-cyclohexenyl) propiononitrile (6a) and (+) -2- (4-methyl-3-cyclohexenyl) acrylonitrile (6b), respectively, with lds of 7275%. Acetals (9 a), (9 b), (9 c) and (9 d) were also obtained from (2) or (5) and trimethyl orthoformate or triethyl orthoformate.
    α, β-Unsaturated carboxylic acid (10) was synthesized via the condensation of aldehyde (5) with malonic acid. Alcohol (11) and esters (12 a), (12 b) (carbon numbers are C10C15) were synthesized from aldehyde (5) with C2C3 alcohols, and reduction with lithium aluminum hydride, Thesecompounds were evaluated on the basis of their odor : (6 a), (10), (12 a) emitted an odor that would qualify them for use as flavor materials.
  • 宍倉 昭弘, 藤本 健四郎, 新井 邦夫, 斎藤 正三郎
    1988 年 37 巻 9 号 p. 731-735
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    エントレーナーを応用した超臨界二酸化炭素抽出法による甘草根粉末 (Radix liquiritiae) からの抗菌性物質の抽出を行った。抽出量及び色調の濃さはエントレーナーとして用いたそれぞれの有機溶剤の溶媒強度パラメーターに比例して大きくなる傾向があった。ベンゼン, 酢酸エチル, アセトン-ヘキサン (1 : 9, vol/vol) 混合溶媒などをエントレーナーとして抽出した時に抗菌活性, 色調において良好な結果を示し, 抽出量は約1/2に減少するが, 抗菌性物質を50%含んだ高活性で色調の明るい抽出物を得ることができた。これにより添加量の削減やカマボコなどの白色食品への添加が可能となった。
  • 山岡 正和, Paichit CHANDRAWONG, 田中 章夫
    1988 年 37 巻 9 号 p. 736-739
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    タイ産脱色ゴム種子油中に, α-, γ-, 及びδ-トコトリエノールの存在を認めた。その含有量はそれぞれ, 30μg/g, 165μg/g, 及び4μg/gであった。この分析結果が, 脂肪酸組成でリノレン酸の値が高いことと共に, 食用植物油中のゴム種子油を検出する有力な手段の一つであることが推定された。
  • 金子 晃久, 篠田 耕三
    1988 年 37 巻 9 号 p. 740-741
    発行日: 1988/09/20
    公開日: 2009/11/10
    ジャーナル フリー
    Microemulsions solubilizing large amounts of water and hexadecane were found present in a water/alcohol/lecithin/hexadecane system (20°C).
    The addition of ethanol and propanol lessened the hydrophobic effect between hydrocarbon chains of lecithin and water by changing the solvent properties of water and promoted the migration of lecithin molecules. Therefore, lecithin can easily swell in water and hexadecane, leading to the formation of a microemulsion (Organized one phase).
  • 牛草 寿昭, 丸山 武紀, 新谷 〓, 松本 太郎
    1988 年 37 巻 9 号 p. 742-745
    発行日: 1988/09/20
    公開日: 2010/02/19
    ジャーナル フリー
    The thermal weight reduction characteristics of household margarines were investigated by thermogravimetry (TG) and differential scanning calorimetry (DSC).
    1) The weight reduction behavior of margarines with aqueous vaporization was observed to vary with the type of sample. In particular, aqueous vaporization in the type of margarine containing gas, or high content of water and protein was noted to start at lower temperature than that of the other types.
    2) The pyrolysis behavior of margarines after dehydration varied with the type of sample. In the case of the high linoleic soft type, weight gain with absorption of oxygen was observed and weight reduction in temperature range from 300°C to 400°C was slower than that of other types. TG curve of butter fat containing fat spread was more simple than those of the above samples. However, weight reduction appeared essentially the same in common soft and carton hard margarines since their fatty acid compositions were similar.
    3) The rate of weight reduction by the end of the isothermal step at 110°C was correlated to moisture content. From 250°C to 350°C, it was also correlated to the iodine value.
  • 岡原 光男, 益山 新樹, 炭田 康史, 朱 云鵬
    1988 年 37 巻 9 号 p. 746-748
    発行日: 1988/09/20
    公開日: 2010/02/19
    ジャーナル フリー
    エチレングリコールジグリシジルエーテルとオクチルアルコールまたはデシルアルコールの反応により得られる1, 8-ビス (アルキルオキシメチル) -3, 6-ジオキサオクタン-1, 8-ジオールを出発物質として, 1, 8-ビス (アルキルオキシメチル) -3, 6-ジオキサオクタン-1, 8-ジ (硫酸ナトリウム) 及び5, 12-ビス (アルキルオキシメチル) -4, 7, 10, 13-テトラオキサヘキサデカン-1, 16-ジ (スルホン酸ナトリウム) を合成した。これらの新しい型の化合物は, 水中で優れた界面活性能を示した。
  • 1988 年 37 巻 9 号 p. 770
    発行日: 1988年
    公開日: 2009/11/10
    ジャーナル フリー
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