著者
海谷 篤
出版者
公益社団法人 日本油化学会
雑誌
油化学 (ISSN:0513398X)
巻号頁・発行日
vol.39, no.8, pp.525-529, 1990
被引用文献数
4

For many years natural squalene has been a familiar health food supplement, while natural squalane has been the most important oily ingredient for all cosmetic products.<BR>In this paper the possibility of new application of squalene and squalane are discussed, furthermore the latest trends and the future perspective about shark liver oil which is the raw material for these compounds are described.
著者
El-Mallah M.Hassan EL-SHAMI S. BASSYOUN F. 無類井 建夫
出版者
公益社団法人 日本油化学会
雑誌
油化学 (ISSN:0513398X)
巻号頁・発行日
vol.41, no.11, pp.1101-1106, 1992-11-20
参考文献数
25
被引用文献数
1

オレイン酸メチルをモデルとしてジヒドロキシル化反応を新しい視点から研究した。試料を経時的に反応系から抜き取り, メタノール/硫酸で処理して残留するエポキシ中間体とアセチル化されたヒドロキシエステル類をそれぞれヒドロキシ-メトキシ及びジヒドロキシステアラートに変換した。キャピラリー GC-MS により各成分を同定し, さらに<SUP>13</SUP>C-NMR 及び<SUP>13</SUP>C-<SUP>1</SUP>H NMR により確認した。アンバーライトIR-120を触媒としたとき, ジヒドロキシステアラートの収率は 71.2% (オレイン酸メチルの変換率は87.7%) で, それには 50 minの反応時間で充分であった。

1 0 0 0 乳化重合

著者
本山 卓彦
出版者
公益社団法人 日本油化学会
雑誌
油化学 (ISSN:0513398X)
巻号頁・発行日
vol.18, no.9, pp.574-581, 1969
著者
山田 泉 船戸 一佳 黒岩 茂隆
出版者
公益社団法人 日本油化学会
雑誌
油化学 (ISSN:0513398X)
巻号頁・発行日
vol.37, no.12, pp.1158-1161, 1988

The rate curves for fatty soil removal under various mechanical conditions were drawn on the basis of spectrophotometric measurement data taken at different temperatures. The rate constant of soil removal (&kappa;<SUB>1</SUB>) and that of the redeposition of removed soil (&kappa;<SUB>-2</SUB>) were calculated from rate curves using the rate equation of fatty soil removal developed in the previous paper. The activation energy for removal (<I>E</I><SUB>a</SUB>) for each mechanical conditions was determined from Arrhenius plots of the rate constants. It was consequently found that with an increase in the mechanical force (rotation of stirrer), the activation energy, <I>E</I><SUB>a</SUB>, decreased and the detergency is enhanced. Further, the relationship between detergency, <I>F</I><SUB>m</SUB>, and mechanical force, <I>M</I>, above the temperature for liquid crystal formation in a ternary system, was determined as follows : <BR>Fm=Cexp (-<I>E</I><SUB>m</SUB><SUP>0</SUP>/a<I>M</I>) (1) <BR>where <I>C</I> and <I>a</I> are constants and <I>E</I><SUB>m</SUB><SUP>0</SUP> is the activation energy related to the contribution of mechanical force. This equation is actually an Arrhenius equation expressing change in detergency as a function of mechanical energy. At a temperature above that for liquid crystal formation, the mechanical force in removal may possibly bring about an increase in the heat energy of the system in a manner similar to that by which rise in temperature causes such an increase.
著者
湯木 悦二 川口 正勝 奥田 幸康
出版者
公益社団法人 日本油化学会
雑誌
油化学 (ISSN:0513398X)
巻号頁・発行日
vol.20, no.9, pp.559-562, 1971

The effect of the natural tocopherol mixture on the Fried Noodle was compared with that of butylated hydroxyanisole. (BHA) by using the test fryer which reduced to a scale of one-twentieth of the commercial apparatus at almost the same conditions as those of the commercial operation.The effect of the protection of fat surface from the air by means of hood method on the loss of antioxidant and on the fat deterioration was also examined.<BR>The following results were observed. Tocopherol, as was expected from the previous paper, showed a better thermostability and its content was kept in a constant level of about 80% during frying when the fat surface was protected from the air as shown in Fig.-2 (A). On the other hand, it was about 50% in the case of the use of BHA. The reason why BHA showed a considerably good thermostability like this might be due to the low frying temperature and the higher fat turnover rate in the case of the Fried Noodle.<BR>As shown in Fig.-2 (B) and (C), BHA rather maintained a higher level of the fat stability than that of tocopherol in the frying conditions. This is considered to be caused by the difference of efficiency of antioxidant, that is, BHA has stronger effectiveness than tocopherol as shown in Table-1. As shown in Fig.-2 (H), this tendency became more and more marked on the shelf-life of Fried Noodle.<BR>From the results of Fig.-2 (A), (B), (C), (E) and (H), it was recognized that the protection of fat surface from the air by the hood method was an effective method to prevent the loss of antioxidant and the fat deterioration.
著者
山根 恒夫 モハメドモザメル ホック 伊藤 純代 清水 祥一
出版者
公益社団法人 日本油化学会
雑誌
油化学 (ISSN:0513398X)
巻号頁・発行日
vol.35, no.8, pp.625-631, 1986
被引用文献数
4 36

<I>Pseudomonas fluorescens</I>産生のリパーゼによるとうもろこし油のグリセロリシス反応を小型かくはん槽中で, 回分式実験によって調べた。試料をクロロホルムで抽出, 濃縮し, トリグリセリド (TG), 1, 2-ジグリセリド (1, 2-DG), 1, 3-ジグリセリド (1, 3-DG), 1-モノグリセリド (1-MG), 2-モノグリセリド (2-MG), 遊離脂肪酸 (FFA) の含量をTLC/FID分析計で定量した。かくはん速度の影響を調べたところ, 350rpm以上では, 反応の初速度は一定であった。反応の経時変化を調べたところ, 反応の初期には, 1, 2-DGが1, 3-DGより多く生成したが, 後期に逆転した。MGの2つの異性体のうち, 1-MGが大部分で, 2-MGはほとんど生成していなかった。反応の初速度は酵素濃度に比例した。水分濃度が低いと反応はほとんど起こらなかった。グリセリン中の水分が4%以下では, FFAは生成しなかった。4%以上では, FFAの生成初速度は水分のほぼ2.7乗に比例して増大した。初速度の温度依存性はアレニウスの式に従い, 活性化エネルギーは6.13kcal/molであった。反応平衡時の組成は, 全反応液重量中に占める油の重量割分 (15~35%の範囲), 反応温度 (25~65℃の範囲), 及び酵素濃度によっては変化しなかった。反応平衡時の組成は, 水分濃度によって大きく変動した。グリセリン中の水分が4%以下では, 平衡時の反応生成物中にFFAは存在しなかった。

1 0 0 0 泡消火剤

著者
星野 誠
出版者
Japan Oil Chemists' Society
雑誌
油化学 (ISSN:0513398X)
巻号頁・発行日
vol.42, no.10, pp.856-867, 1993-10-20
被引用文献数
3

Dry chemicals and inert gases are generally used as fire extinguishants to extinguish small-scale flammable fuel fires such as oil spill fires and oil stove fires. But they are not suitable for extinguishing large-scale oil fires, because of the following three reasons ; 1. there is a possibility of reignition after the fire extinction. 2. it costs much when they are applied continuously for a long time. and 3. the largest drawback is that these agents do not prevent the fuel vaporization after the fire extinction.<BR>On the other hand, no fire-fighting foams have such drawbacks. They are sure extinguishants for fires, of chemical plants, large fuel storage tanks and of major oil spills.<BR>Medium and high expansion foams for fire suppression are commercially available as well as convensional low expansion-type foams. Synthetic surfactant, fluorinated surfactant and fluoroprotein foams have been developed one after another, although there are still conventional hydrolized keratin-protein foams available. These newly developed foams have found a way to a practical application in the fire-fighting field.<BR>This paper describes state of the art of fire-fighting foams and explains the details of each foam.