油化学
Online ISSN : 1884-2003
ISSN-L : 0513-398X
13 巻 , 4 号
選択された号の論文の10件中1~10を表示しています
  • 草野 一仁
    1964 年 13 巻 4 号 p. 185-194
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
  • 浜田 茂, 上野 誠一
    1964 年 13 巻 4 号 p. 195-199
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
    The authors investigated the characteristics of three kinds of oils entitled above.
    A. Peach oil
    Peach fruit seed was extracted with ether to obtain sample of the oil, of which the characteristics of mixed acid, solid and liquid acids separated therefrom were as follows :
    Sample oil Mixed acid Solid acid Liquid acid
    Yield, percent 16.47 94.0 40.41 59.59
    d154 0.9012 - - 0.9118
    n20D 1.4610 - - 1.4657
    A.V. 110.2 - - -
    S.V. 183.8 - - -
    N.V. - 201.4 202.8 200.2
    I.V. (Wijs) 105.5 104.0 74.2 123.1
    mp °C - 29.831.2 - -
    Unsaponifiable matter (%) 2.50 - - -
    Color Yellowish red Yellow Pale yellow Yellowish red
    Solid acid contained chiefly C18, C16 and little amount of C10, C12 acids (C18-F1-elaidic acid was also confirmed).
    Liquid acid contained chiefly C16, C18 and little amount of C12 acid.
    B. Polygonum japonicum oil
    Polygonum japonicum seed was extracted with ether to obtain sample of the oil, of which the characteristics of mixed acid, solid and liquid acids separated therefrom were as follows :
    Oil Mixed acid Solid acid Liquid acid
    Yield, percent 2.70 87.80 17.42 82.58
    d154 0.9273 - - -
    n20D 1.4741 - - 1.4733
    A.V. 33.4 - -
    S.V. 184.4 N.V. 210.9 N.V. 211.7 N.V. 210.8
    I.V. 126.8 130.8 39.2 141.9
    Unsaponifiable matter (%) 5.85 - - -
    Color Dark yellow Yellowish brown
    Pale yellow Brown
    The solid acid contained chiefly C18, C16 and little amount of C14, C12 acids. The liquid acid contained chiefly C16, C18 and little amount of C12, C14 acids.
    C. Cowpea oil
    Cowpea seed was extracted with ether to obtain sample of the oil, of which the characteristics of mixed acid, solid and liquid acids separated therefrom were as follows :
    Oil Mixed acid Solid acid Liquid acid
    Yield, percent 0.56 81.53 63.87 36.14
    d154 0.9331 - - -
    n20D 1.4733 - - -
    A.V. 5.9 - - -
    S.V. 187.6 N.V. 205.5 N.V. 208.2 N.V. 199.5
    I.V. 129.7 126.1 76.3 179.8
    Unsaponifiable matter (%) 7.64 - - -
    Color Yellowish green Yellowish brown Pale yellow Dark red
    The solid acid contained chiefly C16, C18 acids and little amount of C14. The solid acid which is insoluble in petroleum ether was found in the mixed fatty acids. The liquid acid contained chiefly C16, C18 and little amount of C12, C14 acids.
    The unsaponifiable matter had the following properties :
    Sample mp °C I.V. Color
    A 121124 127.6 Yellow
    B 113119 - Yellowish red
    C 135144 126.4 Yellowish white
  • 山田 富司, 細野 有
    1964 年 13 巻 4 号 p. 200-202
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
    Solubilities of stigmasterol, sitosterol (containing about 5% of stigmasterol), and their acetates in twenty two kinds of organic solvent were compared at 20±0.1°C. The differences between the solubilities of stigmasterol and sitosterol were great in iso-butyl alcohol and n-amyl alcohol, and difference between the solubilities for the acetates was great in cyclohexanone. Stigmasterol was concentrated in higher yield by simpler operation by repeating iso-butyl alcohol and n-amyl alcohol extraction of soysterol than by ethylene dichloride-n-heptane.
  • 露木 英男, 成瀬 宇平, 望月 篤, 伊藤 真吾
    1964 年 13 巻 4 号 p. 203-206
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
    The characteristics and the component fatty acids of the acetone-soluble lipid contained in Euphausia superba collected in the Atrantic Ocean, were studied.
    The paper chromatography indicated the presence of myristic, palmitic, stearic, arachidic and behenic acid as saturated fatty acids, and zoomaric, oleic, eicosenoic, erucic, linoleic, and linolenic acid as unsaturated fatty acids.
    The mixed fatty acids, prepared from the lipid by alkalihydrolysis, were separated into three portions, solid, lower and higher unsaturated acids by means of lead salt-ethanol and lithium salt-acetone methods, then their methyl esters were fractionated respectively through the E.H.P. column.
    According to the calculation of Hilditch, the component fatty acids of the acetone-soluble lipid, were as follows saturated fatty acids; 31.78% (myristic 5.84%, palmitic 11.41%, stearic 10.19%, arachidic 4.15%, and behenic 0.19%), unsaturated fatty acids; 68.22% {C14 acids (-2.0H) 0.36%, C16 acids (-2.3H) 14.50%, C18 acids (-3.3H) 24.97%, C20 acids (-6.2H) 20.38%, and C22 acids (-5.4H) 8.01%}.
  • 井上 博, 野口 達夫
    1964 年 13 巻 4 号 p. 206-210
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
    Authors investigated a direct extraction method of rice bran oil having low acid value. The proposed process comprises two stages in which methanol is used in the first stage and hexane or benzene in the second stage as the effective solvents.
    Under optimum conditions for the content of water in methanol, volume of methanol, extraction rate and for the extraction temperature, rice bran oil having lower acid value (about 3) was obtained with higher yield than that of the usual method (alkali-refining from crude rice oil of higher acid value). Another interesting feature of this method is the fact that feruric acid ester was almost transfered into the ricebranoil of lower acid value, therefor, the feruric acid ester will be able to recover easily from the rice bran oil.
  • 太田 静行, 岩田 直樹, 森田 昌治
    1964 年 13 巻 4 号 p. 210-217
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
    The object of this study was to detect the substances which caused foaming of thermally oxidized soybean oil in deep fat frying.
    Soybean oil was subjected to thermal oxidation at 200°C in the presence of air for various lapse of time. The column chromatographic method was used to fractionate the foaming oil thus obtained. Silicagel (20g) treated with 60ml of n-hexane containing 5% i-propyl ether served as the adsorbent. Thermally oxidized soybean oil samples (0.51g) were eluted with 100ml of 15% i-propyl ether in hexane to yield first fraction (F1); 100ml of 60% i-propyl ether in n-hexane to yield the second fraction (F2) and with 100ml of ethyl ether to yield the third fraction (F3). Soybean oils which were heated at 200°C for 2, 4, 6 and 10hr, respectively, in the presence of air showed increase of fractions F2 and F3, while a decrease was seen in fraction F1 in the respective oil. The contents of F1, F2 and F3 in soybean oil heated for 10hr at 200°C were 38, 35 and 25% respectively.
    The physical and chemical characteristics, mean molecular weight and foaming tendencies of each fraction thus obtained were measured. The measurements of foaming tendency were carried out by the gas pumping method through a sieve-plate which would be suitable for the purpose for treating such small quantities of samples. The results showed that the foaming of soybean oil was caused by the oxidative polymerized fractions therein.
    The reduction of carbonyls and epoxy groups to hydroxyl in F2 and F3 with Sodium Borohydride caused more foaming, and the elimination of hydroxyl group caused less foaming, indicating that the polar fractions do exert effect on the foaming tendencies but would actually vary by the quantity and or variety of the polar groups formed.
  • 村上 武彦, 清水 博史, 大沢 勇, 石黒 鉄郎
    1964 年 13 巻 4 号 p. 217-220
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
    Alkylbenzene sulfonate (ABS) concentration in the water of the Tama River (Tokyo Metropolis) was measured at 7 points along the river, and 5 times during 1962-63, using Jones, L-M, and Abbott methods.
    These data showed the highest value in August, probably because of the drainage of household washing.
    At the same time, it was supposed that there existed unknown methylene-blue substances (MBAS) other than ABS, especially in the lower stream of the river.
  • 早野 茂夫
    1964 年 13 巻 4 号 p. 220-223
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
  • 中垣 正幸
    1964 年 13 巻 4 号 p. 224-231
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
  • 児玉 桂三
    1964 年 13 巻 4 号 p. 232-236
    発行日: 1964/04/20
    公開日: 2009/10/09
    ジャーナル フリー
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