油化学
Online ISSN : 1884-2003
ISSN-L : 0513-398X
12 巻, 5 号
選択された号の論文の9件中1~9を表示しています
  • 金田 尚志
    1963 年 12 巻 5 号 p. 249-261
    発行日: 1963/05/20
    公開日: 2010/01/27
    ジャーナル フリー
  • 松尾 登
    1963 年 12 巻 5 号 p. 261-271
    発行日: 1963/05/20
    公開日: 2010/01/27
    ジャーナル フリー
  • 伊東 祐隆, 福住 一雄
    1963 年 12 巻 5 号 p. 272-277
    発行日: 1963/05/20
    公開日: 2010/01/27
    ジャーナル フリー
    The methyl eicosenoate, docosenoate, octadecatetraenoate, eicosapentaenoate and docosahexaenoate were isolated from the fatty acid methyl ester of skipper oil by urea fractionation, followed by vacuum fractional distillation.
    The process of the fractionations and the purity of each individual ester were checked by gasliquid chromatography.
    The structures of these acids were determined by oxidative ozonolysis with identification of the fragments (as benzyl and or methyl esters) by gas-liquid chromatographic analysis.
    These five acids were identified as :
    Δ9 eicosenoic acid
    Δ11 docosenoic acid
    Δ6, 9, 12, 15 octadecatetraenoic acid
    Δ5, 8, 11, 14, 17 eicosapentaenoic acid
    Δ4, 7, 10, 13, 16, 19 docosahexaenoic acid
    The procedure, benzyl-esterification followed by gas-liquid chromatography, may be available for semi-quantitative analysis of low molecular monobasic acids in water, for its simple process and fairly high yield (8090%).
  • 伊東 祐隆, 福住 一雄
    1963 年 12 巻 5 号 p. 278-281
    発行日: 1963/05/20
    公開日: 2009/10/09
    ジャーナル フリー
    The quantitative analysis of fatty acid methyl esters of eight fish oils, sardine oil, cuttlefish oil, oil-flatfish oil, goby oil, tunny oil, swordfish oil, cod liver oil and shark liver oil, has been carried out by gas-liquid chromatography.
    As a result, it was found that there was no characteristic component in the above eight fish oils, that the component fatty acids of each oil was the same as of skipper oil and that merely their composition was different in the relative ratio.
  • ポリグリコールの中規模試験
    得能 祝, 勝沼 広男, 二階堂 賢一, 石塚 義次
    1963 年 12 巻 5 号 p. 282-288
    発行日: 1963/05/20
    公開日: 2009/10/09
    ジャーナル フリー
    The heat of combustion of many polyethers was measured and the heat of polymerisation of propylene oxide was calculated from the data.
    In manufacturing polyglycols on prepilot scale, 20l autoclave heated by electricity or by steam, 280l autoclave and 20l tubular and circulating type reactor cooled by the cascade of boiling liquid were used.
    The heat balance obtained in 20l autoclave experiments were also studied and found that the heat of polymerisation of propylene oxide is 25 cal per mol.
    Further investigations were made on the distribution of molecular weight of each polyglycol prepared with prepilot apparatus by fractionation, and it was made clear that the polymers by the tubular reactor indicated the sharpest distribution of molecular weight among them.
  • フライ安定性評価試験としての揚げ試験法
    熊沢 恒
    1963 年 12 巻 5 号 p. 288-294
    発行日: 1963/05/20
    公開日: 2009/10/09
    ジャーナル フリー
    The stability of frying oils can be evaluated in several methods, heating, aeration and frying tests, amongst, the most practical is the frying test.
    In this paper, investigation was made for problem arising in frying test and for the procedure to evaluate frying stability of each oil.
    The frying methods were as follows :
    Continuous frying method : The oil lost during frying is not supplied. This is a fundamental test to evaluate the frying stability of each oil.
    Replenish frying method : At the end of each frying period 10% weight oil of original is removed and fresh oil of equal weight is replaced. This is considered of importance because this method is most commonly used at present. This method coupled with the continuous frying method makes it useful to compare with the replenish efficiency and especially to determine the relative effectiveness of stabilizers.
    Test was made by these methods using soybean (S), rapeseed (R) and soybean oils added with two kind stabilizers (0.5S, 1.0S). As the result of this experiments, the order of stabilization was 1.0S>0.5S>R>S in both method, but the replenish efficiency was indicated in the following order, 0.5S>1.0S>R≥S. As to the estimated effectiveness of stabilizers, 1.0S has been proved of greater stability than 0.5S as a result of the continuous method, but in the replenish method there was little or no difference between the two and marked replenish efficiency was appeared at 0.5S.
    For the same sample oil, iodine, carbonyl and absorbancy values (at 233mμ) appeared at the end of each induction period were almost identical in both methods. Therefore, the basis for the evaluation of stability should be judged from the length of induction period which is measured with iodine, carbonyl values and absorbancv at 233mμ.
  • ポリオキシエチレンモノグリセリドの性状について
    宮川 昭次, 北川 達雄, 曽根 博
    1963 年 12 巻 5 号 p. 295-299
    発行日: 1963/05/20
    公開日: 2009/10/09
    ジャーナル フリー
    Polyoxyethylene derivatives of monoglyceride were prepared by addition polymerization of about 5 and 20 moles of ethylene oxide to monoglycerides which were synthesized from hydrogenated coconut oil, partially hydrogenated beef tallow, fully hydrogenated beef tallow and cotton seed stearines. The surface activity of these products was studied and compared with that of commercial polyoxyethylene sorbitan fatty acid monoesters (Tween).
    The results showed that all of these derivatives were excellent as well as Tweens in surface activity and especially, 20 moles addition products were rather superior to Tweens in such points as interfacial tension, emulsifying power and permeability.
  • 非イオン系界面活性剤の羊毛繊維縮充に及ぼす影響について
    坂井 史明, 小森 三郎
    1963 年 12 巻 5 号 p. 299-303
    発行日: 1963/05/20
    公開日: 2010/01/27
    ジャーナル フリー
    The effects of nonionic surfactants containing polyoxyethylenglycol ether group in their molecule on wool shrinkage were investigated by using shaking type felting machine and worsted yarns.
    In spite of increase in concentration of nonionics (polyoxethylated octylphenol, nonyiphenol and lauryl alcohol) in the range above 0.05% in felting solution, the amount of shrinkage was almost same and became smaller with increase in moles of ethylene oxide in polyoxyethylated surfactants.
    At the same ethenoxy level, nonionics consisted of phenyl radicals showed more ability to felt wool than polyoxyethylene alkylether.
    About the effect of pH on wool shrinkage in absence and presence of polyoxyethylene octylphenyl ether (P=10), it was quite same in the range of pH values from 4 to 9 but below 3 or above 10, especially, in the former, rapid shrihkage took place.
    In presence of polyoxythylene octylphenylether, the amount of wool shrinkage was more than that in absence, independently from the pH.
    The rate of shrinkage in absence as well as in presence of nonionics increased with temperature in the range of 2030°C, but became constant, above 30°C.
    The correlation between surface tension and wool shrinkage was revealed and it was confirmed that the felting solution having lower surface tension showed more shrinking ability on wool.
  • 小森 三郎
    1963 年 12 巻 5 号 p. 304-314
    発行日: 1963/05/20
    公開日: 2009/10/09
    ジャーナル フリー
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