著者

高木 徹

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.16, no.8, pp.441-448, 1967-08-20 (Released:2009-10-20)

参考文献数

94

著者

藤原 康雄 竹園 哲也 京野 三郎 阪柳 定男 山里 一英 飯塚 広

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.17, no.7, pp.396-399, 1968-07-20 (Released:2010-02-12)

参考文献数

5

被引用文献数

1 2

---

Degree of alkyl chain branching of various commercially available detergent alkylates, including straight chain type, branched chain type and mixture thereof, was studied by means of high-resolution nuclear maenetic resonance. and an explicit correlation between alkyl chain branching ofdetergent alkylates and biodegradability of their sulf onates was obtained.The degree of alkyl chain branching in detergent alkylates is expressed by a parameter HCH3-6 ΣH-5, which is obtained by a combination of NMR and gaschromatography, where HCH3 and Σ H - 5 denote the number of methyl hydrogens and the total number of hydrogens in the alkyl chain, respectively. A plot of this parameter for the alkyl chain branching of detergent alkylates against biodegradability of their sulfonates was found to be almost linear as in Fig.-3. Use of Hω, which denotes the number of total methyl hydrogens in the alkyl chain, instead of HCH3 in the parameter leads to a lack of the linearlity of the plot of the alkyl chain branching against the biodegradability of sulf onates as in Fig.-4. Whereas, biodegradability of alkylbenzene sulfonates can be more rapidly predicted, since Hω, can be derived only from NMR spectra of hydrogens in the alkyl chain in detergent alkylates.

著者

若菜 章 広川 隆一 藤田 稔 熊沢 元春

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.20, no.4, pp.242-245, 1971

---

Pour point reversions of various lubricating oils containing one of three different type pour point depressants (naphthalene-chlorinated paraffin condensation product, phenol-chlorinated paraffin condensation product and polyalkylmethacrylate) were measured by sudden cooling-heating cycle method and Federal test method.<BR>In the former test any pour point reversion was not recognized, but in the latter test a 2.57.5°C range of the pour point reversions was observed in all cases.<BR>Polyalkylmethacrylate gave the most effective pour point depressions and the most stable pour point reversions among the additives.

著者

中沢 君敏 島田 哲夫 梅沢 貢

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.5, no.2, pp.89-93, 1956-03-15 (Released:2010-01-27)

参考文献数

7

著者

戸谷 永生 渡辺 晃 大場 健吉

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.36, no.5, pp.328-331, 1987

被引用文献数

1 16

---

r-リノレン酸やイコサペンタエン酸のような高度不飽和脂肪酸は, 現在, 微生物を用いて大量に合成されるが, アラキドン酸の生産法は低収率のため, まだ検討の余地があると考えられる。アラキドン酸含有脂質を効率よく得るために, <I>Martierella alpina</I>をポテトペースト・デキストロース培地上で培養する際の詳細な条件を, 培地中のデキストロース濃度, 微量金属の添加, 培地層厚, pHの点から検討した。その結果, 菌糸と菌床を6%のデキストロースとCaCl<SUB>2</SUB>・2H<SUB>2</SUB>O 750mg/kg培地を含む厚さ2mmの培地上で, 20℃20d間培養する条件を選定した。乾燥菌体よりそれらの脂質を抽出し脂肪酸分析したところ, アラキドン酸の収量は13.1g/kg培地となった。

著者

桑田 勉

出版者

公益社団法人 日本油化学会

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.5, no.1, pp.2-6, 1956-01-15 (Released:2009-10-09)

著者

若菜 章 広川 隆一 藤田 稔 熊沢 元春

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.20, no.6, pp.352-356, 1971

---

Authors prepared three lubricating base oils having different pour points (0°, -5°, -10°C) by dewaxing of solvent refined waxy raffinate, and then three kinds of representative commercial pour point depressants (naphthalene-chlorinated paraffin condensation product, phenol-chlorinated paraffin condensation product and polyalkylmethacrylate) were added to them in the concentration range of 0.10.5wt%. Thereby the authors measured the ordinary pour points, Federal test method (cycle C) pour points and observed the pour point reversions.<BR>Variance analysis of experimental values showed that Federal test method pour points depended upon the dewaxing temperatures and kind of additives but not affected by the quantity of additives, while the pour point reversions were influenced by these three factors.<BR>Generally, pour point reversions were higher for the samples prepared from base oils of higher pour point.

著者

斎藤 浩

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.26, no.12, pp.754-764, 1977

被引用文献数

1

著者

日比野 英彦 田中 幸久

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.43, no.9, pp.687-697, 1994-09-20 (Released:2009-10-16)

参考文献数

99

被引用文献数

3 4

---

Docosahexaenoic acid (DHA) was isolated from cellular membranes at the sn-2 position of phospholipids (PLs). Using conformation modeling computer software, data were obtained indicating DHA in PLs to possibly be tightly and regularly packed in the acyl chain array in cellular membranes under certain conditions.PLs containing DHA had stereospecific conformations, which may possibly be the reason for the important physiological functions of this lipid. PLs containing DHA express difference induction and inhibited 5-lipoxygenase and lecithin-cholesterol acyltransferase activity. They were found essential to integrated brain functions such as learning ability and the inducement of paradoxical sleep.

著者

矢澤 一良 影山 治夫

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.40, no.10, pp.974-978, 1991-10-20 (Released:2009-10-16)

参考文献数

27

被引用文献数

5 7

---

Docosahexaenoic Acid (DHA) has important physiological activities, such as reduction of the plasma cholesterol and triglyceride, lowering effect of systolic blood pressure, anti-inflamatory and anti-tumor activities, etc. Recent studies also strongly suggest that DHA plays a key role in the brain and retina. DHA commonly exists in fish oil obtained from sardines, mackerels, menhadens, etc. Usually, however, it contains DHA at a relatively low level (5-10%) and many other polyunsaturated fatty acids, and thus isolation of pure DHA from fish oil is quite difficult.Recently, we found that (1) orbital fat of a bonito (Katsuwonus) and a tuna (Thunnus) fish was an excellent source of DHA, (2) DHA content in the total fatty acids of the orbital fat isolated from a bonito and a tuna fish was 42% and 30%, respectively, and (3) DHA existed as triglyceride in both cases.Purification of DHA was examined after ethanolysis of orbital fat oil obtained from a tuna fish, and resulted in 95%-99% purity of DHA-ethyl ester by a new method using Ag ion. Thus, finding of the excellent source and the purification procedure will greatly accelerate the research on DHA.

著者

新谷 〓 木下 葉子 松本 太郎

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.13, no.10, pp.544-549, 1964-10-20 (Released:2010-01-27)

参考文献数

7

被引用文献数

1 1

---

In order to make statistical analysis of the melting point of fats in margarine and shortening products in Japan, melting point of products was measured monthly on 18 kinds of household margarine, 14 kinds of bakery margarine, and 14 kinds of shortening. Mean value (x), maximum and minimum values, range (R), and yearly standard deviation (σ) were calculated and these values were found to be the highest in shortening, followed in the order of bakery and household margarines, the values being x 35.55°C, 34.55°C, 33.52°C, R 12.45, 11.24, 10.24°C, and σ 4.13, 3.77, 3.29, respectively. Some of the household margarines, showed hardly any difference in the melting point throughout the year.Salt content, saponification value, iodine value, and thiocyanate value were measured as being responsible for the maximum and minimum values of the melting point, and examinations were also made on the correlation between the melting point and iodine value, linolic acid, and saturated acid.

著者

芋川 玄爾

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.44, no.10, pp.751-766, 1995-10-20 (Released:2009-10-16)

参考文献数

28

被引用文献数

1 2

---

Lipids forming lamella are located in the intercellular spaces between stratum corneum of the skin and serve as barrier and water reservior for protecting the skin from foreign hazards and water loss. The lipids consist mainly of ceramides including acylceramides with linoleic acid in the ester linkage. Ceramides are an essential component for supporting lipid lamella where non-freezible, unbound water is compartmentalized, offering water-holding properties to the stratum corneum. This function was confirmed by recovery experiments on lipid-depleted stratum corneum combined with differential scanning calorimetry analysis. On the other hand, the acylceramides with linoleic acid play an crucial role in the barrier function by stabilizing the lamella as rivet. This role was demonstrated by recovery experiments in which only the linoleic acid bearing acylceramides had a potential of repairing barrier disrupture as seen in essential fatty acid deficiency rat skin and UV irradiated skin. Skin disease which suffers from a marked deficiency in both barrier and water-holding function is atopic dermatitis. Consistently, there is a marked decrease in the level of ceramides including acylceramides in the stratum corneum of patients with atopic dermatitis which can also be improved by the application of the these ceramide derivatives.

著者

相磯 和嘉

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.11, no.7, pp.327-334, 1962-07-20 (Released:2009-09-16)

参考文献数

30

著者

飯森 正秀

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.20, no.2, pp.91-94, 1971-02-20 (Released:2009-11-10)

参考文献数

2

---

Studies of the adsorption of detergents (LAS and ABS) on skin, nail and hide powder in various pH, and the dermatological effect of LAS on human skin by immersion and patch-test were carried out.Higher detergent adsorption onto human skin was observed when treated in acidic detergent solution, which indicated there might exist some correlation between detergent adsorption and pH of the solution. Clinical test showed no dermatological side-effect on human skin due to detergent adsorption.

出版者

公益社団法人 日本油化学会

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.17, no.4, pp.262-266, 1968-04-20 (Released:2009-10-20)

参考文献数

19

著者

木村 午朗

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.9, no.3, pp.154-160, 1960-03-20 (Released:2009-10-09)

参考文献数

29

被引用文献数

1

著者

位田 好美

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.41, no.9, pp.924-928, 1992-09-20 (Released:2009-10-16)

参考文献数

8

著者

林 壮一

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.16, no.10, pp.554-559, 1967-10-20 (Released:2009-10-20)

参考文献数

11

---

On studying phenomena relating to emulsification, it becomes necessary to study on intermolecular forces between emulsifier and oil or water.On this view point, it was found that there exists, at a given oil/water system, required HLB value for interfacial viscosity as well the required HLB value for emulsification, and also there exists linear correlation between required HLB value for interfacial viscosity and solubility parameter of oil.The empirical equations to determine required HLB value for interfacial viscosity at a given oil/water interface were deduced experimentally as follows;Y=6.146δ0-46.0or Y=127.3logδ0-112.2where Y=required HLB value for interfacial viscosity, and δ0=solubility parameter of oil.Above empirical equations are both applicable in the range of Y=515 (corresponding to δ0=8.310.0) independent of the kind of emulsifiers (at least, in the case of nonionic emulsifiers).Required HLB value for interfacial viscosity (now this value may be calculated only from δ0 value for a given oil), as well required HLB value for emulsification, may be useful for determination of HLB value of a given surfactant experimentally.In the course of this study, the author found that heat of vaporization (accordingly δ0 value) may be calculated by the following empirical relation;ΔHv (T') =ΔHv (T0) √T0/T'where T', T0 are absolute temperature and ΔHv (T') , ΔHv (T0) are heat of vaporization at T' and T0 respectively.

著者

佃 豊之

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.7, no.1, pp.2-7, 1958-01-20 (Released:2009-10-09)

参考文献数

26

著者

松井 宣也

出版者

Japan Oil Chemists' Society

雑誌

油化学 (ISSN:18842003)

巻号頁・発行日

vol.28, no.10, pp.680-688, 1979-10-20 (Released:2010-02-19)

参考文献数

57

被引用文献数

1