Journal of Japan Oil Chemists Society最新文献_第9页

Simple Method for Determining Peroxide in Edible Oils and Dressing. II 测定食用油和调味品中过氧化物的简易方法。2

Journal of Japan Oil Chemists Society Pub Date : 2000-09-20 DOI: 10.5650/JOS1996.49.945

K. Ichikawa, A. Ishida

引用次数: 1

Arachidonic Acid-Containing Monoacylglycerol as an Endogenous Cannabinoid Receptor Ligand 含花生四烯酸单酰基甘油作为内源性大麻素受体配体

Journal of Japan Oil Chemists Society Pub Date : 2000-08-20 DOI: 10.5650/JOS1996.49.777

T. Sugiura

{"title":"Arachidonic Acid-Containing Monoacylglycerol as an Endogenous Cannabinoid Receptor Ligand","authors":"T. Sugiura","doi":"10.5650/JOS1996.49.777","DOIUrl":"https://doi.org/10.5650/JOS1996.49.777","url":null,"abstract":"2-Arachidonoylglycerol is a unique molecular species of monoacylglycerol isolated from rat brain and canine gut as an endogenous cannabinoid receptor ligand. 2-Arachidonoylglycerol was recently shown to induce a rapid transient increase in NG108-15 cells through a cannabinoid CB1 receptor-dependent mechanism. 2-Arachidonoylglycerol was also shown to induce a rapid transient increase in HL-60 cells through a cannabinoid CB2 receptor-dependent mechanism. Based on a structure-activity relationship, 2-arachidonoylglycerol was concluded a natural ligand for the CB1 receptor or CB2 receptor and both of which are primarily 2arachidonoylglycerol receptors. 2-Arachidonoylglycerol is a degradation product of inositol phospholipids in stimulated tissue. The CB1 receptor is involved in attenuation of the neurotransmission; 2-arachidonoylglycerol, produced and released on neuronal excitation, may possibly be essential for the slowing of neurotransmission. 2-Arachidonoylglycerol may also have important roles in the cardiovascular and immune systems, but this remains to be confirmed. A complete understanding of the physiological roles of 2-arachidonoylglycerol, a novel lipid mediator, awaits future studies.","PeriodicalId":16191,"journal":{"name":"Journal of Japan Oil Chemists Society","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2000-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82181977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Purification of Ethyl Docosahexaenoate through Selective Alcoholysis with Immobilized Rhizomucor miehei Lipase 固定化米黑根霉脂肪酶选择性醇解纯化二十二碳六酸乙酯

Journal of Japan Oil Chemists Society Pub Date : 2000-08-20 DOI: 10.5650/JOS1996.49.793

Kazuaki Maruyama, Y. Shimada, T. Baba, T. Ooguri, A. Sugihara, Y. Tominaga, S. Moriyama

{"title":"Purification of Ethyl Docosahexaenoate through Selective Alcoholysis with Immobilized Rhizomucor miehei Lipase","authors":"Kazuaki Maruyama, Y. Shimada, T. Baba, T. Ooguri, A. Sugihara, Y. Tominaga, S. Moriyama","doi":"10.5650/JOS1996.49.793","DOIUrl":"https://doi.org/10.5650/JOS1996.49.793","url":null,"abstract":"Ethyl docosahexaenoate (E-DHA) was efficiently enriched by selective alcoholysis of ethyl esters from tuna oil with lauryl alcohol (LauOH) using immobilized Rhizomucor miehei lipase. We thus attempted the development of an enzymatic process applicable to the industrial purification of E-DHA. The amount of LauOH was found the most important factor in the alcoholysis, and a larger amount of LauOH was effective for the enrichment of E-DHA. In this study, the amount was fixed at 7 molar equivalents for ethyl esters originating from tuna oil (E-DHA55; E-DHA content, 54.6mol%). A substrate mixture of E-DHA55/LauOH was introduced into a column packed with 8.0g of immobilized Rhizomucor lipase (22×63mm) at 30°C and a flow rate of 10mL/h (8.3g/h). E-DHA content increased to 87mol% with 58% alcoholysis. Even after 150 d, E-DHA content increased to 85mol%, although alcoholysis decreased to 48%. The half life of the lipase was determined as 150 d based on decrease in alcoholysis in the batch reaction. The reaction mixture flowing from the column was applied to film distillation, and unreacted ethyl esters were recovered in 82% yield. The ethyl ester fraction was contaminated with 2.4wt% LauOH and 6.3wt% lauryl esters, and lauryl esters could be completely removed by urea adduct fractionation. Through a series of purifications, E-DHA content was raised to 88wt% in 52% yield of the initial content in E-DHA55.","PeriodicalId":16191,"journal":{"name":"Journal of Japan Oil Chemists Society","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2000-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89645516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Synthesis and Properties of Bis (ammonium bromide) Cleavable Surfactants Bearing Two Ester Groups Derived from 1-O-Alkylglycerols 由1- o -烷基甘油衍生的两酯基双(溴化铵)可切割表面活性剂的合成及性能

Journal of Japan Oil Chemists Society Pub Date : 2000-08-20 DOI: 10.5650/JOS1996.49.785

D. Ono, S. Yamamura, Masaki Nakamura, T. Takeda

引用次数: 3

Preparation of Poly (butylene succinate) Containing Monoacylglycerol Unit 含单酰基甘油单元的聚琥珀酸丁二烯的制备

Journal of Japan Oil Chemists Society Pub Date : 2000-08-20 DOI: 10.5650/JOS1996.49.825

Y. Taguchi, A. Oishi, K. Fujita, Y. Ikeda, Katsuhiro Watanabe, Masuda Takashi

引用次数: 3

Preparation of Cotelomers of Acrylic Acid and n-Hexyl, 2-Ethylhexyl or n-Dodecyl Acrylate and Their Properties as Multi-Alkylated Surfactants 丙烯酸与正己基、2-乙基己基或正十二基丙烯酸酯共端体的制备及其作为多烷基化表面活性剂的性能

Journal of Japan Oil Chemists Society Pub Date : 2000-08-20 DOI: 10.5650/JOS1996.49.801

Tomokazu Yoshimura, Y. Koide, H. Shosenji, K. Esumi

{"title":"Preparation of Cotelomers of Acrylic Acid and n-Hexyl, 2-Ethylhexyl or n-Dodecyl Acrylate and Their Properties as Multi-Alkylated Surfactants","authors":"Tomokazu Yoshimura, Y. Koide, H. Shosenji, K. Esumi","doi":"10.5650/JOS1996.49.801","DOIUrl":"https://doi.org/10.5650/JOS1996.49.801","url":null,"abstract":"Multi-alkylated surfactants of cotelomers of alkyl acrylate and acrylic acid (xRmA-yAA; x, y and m mean number of alkyl chains, number of hydrophilic functions and alkyl chain length, respectively) were prepared by cotelomerization of n-hexyl acrylate, 2-ethylhexyl acrylate or n-dodecyl acrylate and acrylic acid in the presence of 2-aminoethanethiol hydrochloride and examined for surface activity. Surface tension of aqueous solution of xR6A-yAA, xR8A-yAA and xR12A-yAA was 28-32, 27-30 and 38-45mNm-1, respectively. Critical micelle concentration (cmc) decreased with greater number of alkyl chains and alkyl chain length in xR6A-yAA, xR8A-yAA and xR12A-yAA. 2.9R6A-2.3AA, 2.8R8A2.5AA and 2.7R12A-2.9AA in the presence of 300ppm of Ca2+ exhibited surface tension of 24, 28 and 33 mNm-1, respectively. 2.9R6A-2.3AA, possessing shorter alkyl chains, had high foam stability, while 2.8R8A-2.5AA, having branched alkyl chains, showed poor stability. Interface between aqueous solution of xR6A-yAA, xR8A-yAA and xR12A-yAA and toluene indicated interfacial tension of 11-13, 8-12 and 10-15mNm-1, respectively. Cmcs of cotelomers at the interface were 1/3 to 1/4 that of sodium ndodecanoate, a conventional surfactant. Emulsification of toluene was brought about by shaking with aqueous solution of cotelomers. A highly stable oil-in-water type emulsion was formed on using cotelomers having 2 to 3 alkyl chains.","PeriodicalId":16191,"journal":{"name":"Journal of Japan Oil Chemists Society","volume":"664 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2000-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91549501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Core Lipids of Hyperthermophilic Archaeon, Pyrococcus horikoshii OT3 嗜热古细菌，堀志焦球菌OT3的核心脂质

Journal of Japan Oil Chemists Society Pub Date : 2000-07-20 DOI: 10.5650/JOS1996.49.695

A. Sugai, Y. Masuchi, I. Uda, T. Itoh, Y. Itoh

{"title":"Core Lipids of Hyperthermophilic Archaeon, Pyrococcus horikoshii OT3","authors":"A. Sugai, Y. Masuchi, I. Uda, T. Itoh, Y. Itoh","doi":"10.5650/JOS1996.49.695","DOIUrl":"https://doi.org/10.5650/JOS1996.49.695","url":null,"abstract":"Core lipids of the new hyperthermophilic archaeon, Pyrococcus horikoshii OT3, purified from hot sediment at the Iheya Ridge in the id-Okinawa Trough were investigated. More than 80% of core lipids in the isolate were composed of caldarchaeol (dibiphytanyldiglycerol tetraether). Archaeol (diphytanylglycerol diether) and the trialkyl type of caldarchaeol were present as minor components. A core lipid similar to that of the H form caldarchaeol found in Methanothermus fervidus was detected at a total content of 15%. The negative FAB-MS spectrum of caldarchaeol from strain OT3 showed the major molecular ionic peak (M-H)to be at m/z 1300. The isoprenoid chain of the caldarchaeol was composed primarily of a C40 hydrocarbon without cyclopentane rings. Isoprenoid chains prepared from total lipids of strain OT3 consisted of 9% C20, 82% acyclic-C40, 7% monocyclic-C40 and 2% bicyclic-C40. Tricyclic-C40 and tetracyclic-C40, observed in the order Sulfolobales of thermophilic archaea, were not found in the isolate. The core lipids from strain OT3 thus more resemble those of thermophilic methanogen in Euryarchaeota rather than those of the order, Sulfolobales in Crenarchaeota.","PeriodicalId":16191,"journal":{"name":"Journal of Japan Oil Chemists Society","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2000-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79165925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 38

Lipoprotein Modification and Atherosclerosis 脂蛋白修饰与动脉粥样硬化

Journal of Japan Oil Chemists Society Pub Date : 2000-07-20 DOI: 10.5650/JOS1996.49.687

H. Itabe

引用次数: 5

Method for Micro-determination of Soap in Refined Edible Oil 精制食用油中皂的微量测定方法

Journal of Japan Oil Chemists Society Pub Date : 2000-07-20 DOI: 10.5650/JOS1996.49.713

Setsuko Hara, M. Kawamoto, Yoichiro Totani

引用次数: 0

Quantitation of Sterols in Some Setaria Plants by Gas Chromatography 气相色谱法测定某些狗尾草属植物中甾醇的含量

Journal of Japan Oil Chemists Society Pub Date : 2000-07-20 DOI: 10.5650/JOS1996.49.727

S. Takatsuto, Emiko Itokawa, Bun-ichi Abe, Y. Narumi

引用次数: 1