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        검색결과 2,609

        2521.
        1989.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was carried out to study influence of antioxidants on serum and tissue of rats fed with thermally oxidized oil. The experimental animals used 30male rats of sprague-dawley weighting 150±25g. They are divided into 5 groups and fed to experimental diets which are composed of 15% thermally oxidized oil in addition to ascorbic acid, Vitamin E, Ethylendintrioteraaceticacid(EDTA) and none added oxidized oil by heat and fresh soybean oil group. Thermally oxidized oil was prepared from the soybean oil by heating at 180℃ for 30 hours. After feeding for 4 weeks, the result are as follows; 1. Body weight gain were lower B diet group than A diet group. 2. Total cholesterol levels in serum of all experimental diet groups except B diet group were higher than that of A diet group. 3. HDL-cholesterol levels of all experimental diet groups except E diet group were lower than that of A diet group. 4. The activities of GOT, GPT in serum of all experimental diet groups except B diet group and D diet group were higher than that of A diet group. 5. Vitamin E levels in serum of E diet group were highest than that of all experimental diet groups, and Vitamin E levels in liver of A diet group were highest than that of all experimental diet groups. 6. Lipid peroxide in Serum were highest B diet group than that of all experimental diet groups and the other experimental diet group significantly lower than that of the A diet group. 7. Lipid peroxide in liver of all experimental diet group except E diet group were significantly higher than that A diet group and lipid peroxide in kidney of all experimental diet group except B diet group were lower than that of A diet group. Four these results, as Vitamin C, Vitamin E, and EDTA added diets have effect of thermally oil by antioxidants, it could be suggested that thermally soybean oil diet has required to add antioxidant because it has not sufficient Vitamin E for antioxidant and intake and overtake level of thermally soybean oil diet should be studied to go ahead.
        4,000원
        2522.
        1989.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Five novel amphoteric surfactants of N-acyloxyethylcarboxybetaine series were synthesized via Schotten-Baumman reaction between five acid chlorides containing 10, 12, 14, 16 and 18 carbon atoms in their N-alkyl groups and dimethylaminoethanol to give the intermediate products, 2-dimethylaminoethylalkanoates(2). Quaternization of these products(2) was permitted to from 2-(acyloxyethyldimethylammonic)- acetates(3), whose structures were identified by elemental analysis, IR spectrophotometry and 1Hnmr spectrometry. The yield of the final products was shown in the range of 77-80% based on the intermediate products. The surface tension of the aqueous solution of (3) was measured, and the critical micelle concentrations (cmc) were shown in the range of 2.1 × 10-3 - 3.3 × 10-4mol/l, and the surface tension at cmc was 28-36 dyne/cm. Cmc was lowered gradually by the increment of the length of N-alkyl ester containing group. The isoelectric point was shown in the range of 4.44-5.20. It showed a tendency to lean toward the acidic site and its range was broadened as increase of the hydrophobic group length. A linear relationship between log cmc and the number of carbon atoms(N) in the hydrophobic alkyl chain was shown in the relative equation of log cmc=-1.75-0.1N, and the contribution rate of N on the standard free energy change in micellization, △(△G˚m)/△N, was calculated as -0.23 RT.
        4,000원
        2523.
        1989.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The fast separation and determination of cefatrizine·propylene glycol and inmpurities - TACA: 7-amino-3-(1,2,3-triazol-4-yl)thiomethyl-3-cephem-4-carboxylic acid and 7-ACA; 7-amino cephalosporanic acid - was performed by the high poerformance liquid chromatography using octadecyl siland (ODS) column. Methanol and ammonium phosphate buffer [0.03M(NH4)2 HPO4, (pH 7.5)] was used analyze, as eluent. The experimental value of the contents of cefatrizine·propylene glycol and impurities agree with the theoretical value of those.
        3,000원
        2524.
        1989.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Four fatty acid vinyl esters were synthesized by transesterification between vinyl acetate and lauric acid, myristic acid, palmitic acid, stearic acid, respectively. Fatty acid vinyl ester oligomers were prepared from polymerization of four fatty acid vinyl esters in the presence of potassium persulfate in methanol. The α-sulfonation of these four fatty acid vinyl ester oligomer were carried by direct addition of sulfur trioxide. Especially, molecular weights of sodium α-sulfo fatty acid vinyl ester oligomers were measured by boiling point method.
        4,000원
        2525.
        1989.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The oxidative stability of palm oil with moisture addition during heationg was investigated and the antioxidant effects of tocopherol, citric acid and sodium polyphosphate were evaluated. The addition of natural tocopherol up to 200 ppm level did not improve the oxidative stability of palm oil with moisture (1m1 H2O additive to 200g of oil at 180℃). The maximum antioxidant effect was observed at the Concentration of 400 ppm. Addition of citirc acid did not influence the effective concentration of tocopherol. Whereas addition of sodium polyphosphate and citric acid increased the antioxidant effect of tocopherol. The maximum synergistice effect was observed at the concentrations of 50 ppm citric acid and 50 ppm of sodium polyphosphate. Addition of 50 ppm citric acid and 50 ppm sodium polyphosphate to 100 ppm of tocopherol exceeded the antioxidant effect of 400 ppm tocopherol alone.
        4,000원
        2526.
        1989.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Effectiveness of some natural antioxidants were investigated by measuring the physico-chemical charcteristics and fatty acid composition during thermal oxidation in palm oil. Tocopherol showed most enhanced thermal oxidation stabilities compared to the other natural antioxidants. AR spice was no good AOM stability and changes of acid value but the other parameters were obtained desirable results. The changes of linoleic aicd content was slightly decreased during thermal oxidation. Addition of rosemary and glycyrriza extract increased the stabilities of oil less than tocopherol and AR spice. Order of antioxdative effects was tocopherol, AR spice and others. There was no significiant difference in stability of rosemary and glycyrriza extract.
        4,000원
        2527.
        1989.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        To developed new process for obtaining maximum molecular weight of anionic acrylamide and acrylic acid copolymer by inverse emulsion polymerization. Concentration of initiator, reducing agent, surfactant and mole ratio of acrylamide-acrylic acid were studied for the process. Semi-batch processes with method of redox, control of reaction temperature, feeding method of monomer and reaction time, was suitable for maximum molecular weight of P(AMAC) from this process obtained 3.09 × 106(Mn.) and 4.41 × 106(Mw.) in molecular weight measured by the intrinsic viscosity method. inverse emulsion polymerization mechanism of P(AMAC) does not followed the Smith-Ewart and Medvedev theory, but selected for concentration of initiator, reducing agent, surfactant, water solubility of monomer.
        4,000원
        2528.
        1988.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The effects of exercise and selenium added high fat diet on edurance and serum lipid components were studied in rats. A total of 72 male Sprague-Dawley (150±35g, body weight) were divided into trained group and untrained group and were bred for 7 weeks. Each group had 6 different dietary subgroups; namely, basal diet, 20% shortening and 20% soybean oil subgroup and selenium (0.01mg%) added each subgroups. Exercises of 8-min treadmill running and 10-min swimming were given to the trained group every other day during the experimental period while only treadmill running was given to the untrained group during the last week. The amounts of food intake, changes in body weight and endurance were determined once a week and serum lipid components were measured before and after experimental period. Following are the results obtained : 1) The untrained group took a slightly larger amount of food than that in the trained group. The food efficiency is, however, higher in the trained group. Body weight increased more in untrained group, while high fat diet resulted in greater increment in body weight than that in normal diet groups. 2) The trained group showed remarkably longer endurance than the untrained group and selenium added high fat diet enhanced the effect. 3) The trained group showed lower blood level of T-chol., TG and TG/PL than the untrained group. All the other blood values of HDL-chol., PL, MDL-chol./T-chol., HDL/LDL and A/G ratio were higher in trained group. 4) Soybean oil added dietary groups exibited lower blood levels of T-chol., TG, TG/PL and A/G than those in shortening added dietary groups. On the contrary, the former groups showed higher blood HDL-chol., PL., HDL, HDL-chol. and HDL/LDL ratio than those of soybean oil added dietary groups. 5) LDH5 was the most abundant one among serum LDH isozymes. The electrophoretic pattern of serum LDH isozymes was not changed by exercise training and selenium added high fat diet. 6) Exercise training lowered blood GOT and TBA. These effects were enhanced by soybean oil added diets. From the above results it was concluded that a regular and long term exercise training as well as a small amount of selenium added high fat diet result in reduction of body weight and TBA and improve dietary efficiency and physical endurance in rats.
        4,900원
        2529.
        1988.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was done to determine the effect of antioxidants added perilla oil diet on the content of cholesterol, vitamin E, and lipid peroxide in serum and tissue of rats. Four groups of experimental diets, such none added perilla oil diet, ascorbic acid added perilla oil diet, vitamin E added perilla oil diet, EDTA added perilla oil diet were fed ad libitum to the 4 weeks white male rats of Sprague-Dawley strain. The results obtained are summarized as follow: 1) The body weight gain in all experimental diet groups was higher than the control gorup and EDTA added diet group was lower than the other experimental diet group, while food intake in vitamin E added diet group was the highest and vitamin C added diet group was the lowest in the control group. 2) Total cholesterol levels in serum of all experimental diet groups were lower than that of the control group and especially the level of total cholesterol in none added diet group and vitamin C added diet group were significantly lower than that of control group. 3) HDL-cholesterol levels of all experimental diet groups were lower than that of the control group and especially none added diet group was significantly lower than that of control group. 4) The activities of glutamic oxaloacetic transaminase (GOT) in serum of all experimental diet group except EDTA added diet group were higher than that of the control group and especially none added diet group was significanly higher than that of the control group. The activites of glutamic pyruvic transaminase (GPT) in serum of all experimental diet groups except vitamin C added group were higher than that of control group. 5) Vitamin E levels in serum of none added diet group and vitamin C added diet group were lower than that of the control group and vitamin E added diet group and EDTA added diet group were higher than that of the control group. 6) Vitamin E levels in liver of all experimental diet groups were higher than that of control group and especially none added diet group and vitamin E added diet group were significantly higher than that of the control group. 7) Lipid peroxide in serum of all experimental diet group were lower than that of control group and especially EDTA added diet group. 8) Lipid peroxide in liver and spleen of all experimental diet groups were higher than that of the control group and lipid peroxide in kidney of all experimental diet groups except EDTA added diet group were higher than that of the control group. Four these results, as vitamin C, vitamin E and EDTA added diets have an effect to lipid peroxide by antioxidants, it could be suggested that perilla oil diet has required to add antioxidant because it has not sufficient vitamin E for antioxidant and intake and overtake level of perilla oil diet should be studied to go ahead.
        4,000원
        2530.
        1988.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This experiment is carried out to study alteration of phospholipid compoent in liver, kidney, testis, and brain tissues of male rats which are fed selenium added high fat diets for 7 weeks. The phospholipids of these tissues are analyzed by TLC method. The results are as follows. 1. The growth rate and food intake levels are not affected by selenium-added high fat diets. 2. The levels of total cholesterol, total lipid and TBA are lower in selenium-added diets than selenium free diets 3. The total phospholipid levels of each tissue are kidney > brain > testis > liver and the levels of phospholipid component are Le>Sph>Ce>LLe for kidney and liver, Le>Sph>LLe>Ce for testis and brain.
        4,300원
        2531.
        1988.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In order to investigate the amino acid and fatty acid content in Thuja biotae water extract treated with alkaline, it was performed. There are 16 kinds of different amino acid and 20 kinds of different fatty acid in Thuja biotae water extract. An aspartic acid was contained 52% and proline was contained 10%, particulary, r-aminobutyric acid was analysed. Essential fatty acids; linoleic acid, linolenic acid and arachidonic acid were cotained a lot amount. There are 11 different unknown materials which were identified by GC-MS spectrum, such as N-[(4α,5α)-cholestan-4-yl]-acetamide; 22,26-Epithio-furost-5-en-3-ol; 2-Methyl-6-(4-methyl-3-cyclohexen-1-yl)-4-heptanone; 3,12,14-Tris(acetyloxy)-pregnane-15,20-dione;22-Methyl-26-thio-furost-5-en-3-ol; 7-Ethenyl-1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydro-1,4a,7-trimethyl-1-phenanthrene carboxyaldehyde; Methoxyiminopro-panedioic acid; 13-Methyl-13-β-Methyl-13-vinyl-dodecaarp-7-en-3-3-ol; 22-Methyl-26-thio-furost-6-methyl-3-ol; 5α-Androstane-2,11-dione; 9-Methyl-heptadecanoic acid.
        4,000원
        2532.
        1988.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        D-Glucoses, one of the aldohexoses, was reacted with carbonyl compound such as actione or cyclohexanone. Hydroxy groups which are C-1, C-2 site and C-5, C-6 site of D-glucose molecule were substituted with isopropylidene or cyclohexylidene group and such 3-O-acyl-D-glucoses as 3-O-lauroyl-D-glucose, 3-O-myristoryl-D-glucose, 3-O-palmitoyl-D-glucose, 3-O-stearoyl-D-glucsoe and 3-O-oleoyl-D-glucose were obtained by acylation with acylchlorides having from 12 to 18 carbon atoms followed by hydrolysis.
        4,000원
        2533.
        1988.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The quaternized compound of the copolymer between 2-diethylaminoethyl methacrylate and stearyl methacrylate (DSACC) was chosen as the mother resin for the water repellent of acrylics. The quaternized compound of 1-lauroyl dis (amino ethyl)-2-dodecyl imidazoline (LDDIC) was used to promote softening effect and hydrostatic pressure for the water repellent. The water repellent (EDUWC) obtained from the DSACC and LDDIC blended with waxes and emulsifiers improved the properties such as the water repellency, washable, tear strength and crease recovery when it was treated on the nylon fabrics with and without the resin. The reaction mechanism between the Nylon fiber and EDLWC was examined, and EDLWC was confirmed as the durable water repellent.
        4,000원
        2534.
        1988.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Properties of aqueous solution, that is, the viscosities and solubilities of benzene were observed in relation to critical micelle concentration of each alkyl aldehyde polyoxyethylene glycol acetal type surfactant. These showed that the mininum points in specific viscosity/concentration-concentration curves were corresponded with the critical micelle concentration obtained by surface tension and appeared the remarkable increase of non-Newtonics according to the increase of the number of carbon in hydrophobic groups. The fluidity of non-Newtonics is not observed by a little increase of the degree of polymerization in polyoxyethylene glycol groups.
        4,000원
        2535.
        1988.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Aliphatic aldehyde polyoxyethylene glycol acetals were synthesised through the reaction of aliphatic aldehydes such as caproic aldehyde, capryl aldehyde, capric aldehyde and lauric aldehyde with excess diethylene glycol, triethylene glycol and tetraethylene glycol, respectively. The acetal formation, in which water was azeotropically distilled by adding benzene to the reaction system, was gained a good yield of acetal type compounds. This reaction is found pseudo first order reaction at various temperatures such 70, 80, 90 and 97℃. Also these activation energies of reaction of acetal type products such as caproic aldehyde diethylene glycol acetal, capryl aldehyde diethylene glycol acetal, capric aldehyde diethylene glycol acetal, lauric aldehyde diethylene glycol acetal, caproic aldehyde triethylene glycol acetal and caproic aldehyde tetraethylene acetal were 17.3, 19.6, 21.2, 21.6, 15.5 and 14.7 Kcal/mole.
        4,200원
        2536.
        1988.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpous of the study was to find an effect of oral administered medium chain triglyceride(MCT) diet on the serum and enzyme activities of Spraque-Dawly rats when they were oral fed with MCT, soybean oil and palm oil. The result was as follow. 1) The body weight gains in MCT diet group was lower than that of the all experimental group. 2) Total cholesterol levels in serum and liver of MCT diet group were very lower than that of the all experimental groups. 3) HDL-cholesterol level of MCT diet group was higher than that of the all experimental group except normal group and VLDL, LDL-cholesterol levels was very higher. 4) TG and PL levels of MCT diet group higher than that of the control group. 5) The activities of GOT with soybean oil diet group and of GPT with MCT diet group were lower than that of the all experimental group. 6) HDL-levels in the serum lipoprotein of MCT diet group was increased and LDL levels was decreased.
        4,000원
        2537.
        1988.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In order to develope the method of quantitative determination of lipid hydroperoxide in human blood serum, we tried the ferrothiocyanate method to total lipids extracted by Bligh-Dyer method and obtained the results as follows. 1. The maximum absorbance showed at the concentration of Mohr's solution, 0.127M at pH 1.70 and ammonium thiocyanate solution, 3.95M in the ferrothiocyanate method. 2. When hydrogen peroxide, cumene hydroperoxide, and oxidized linoleic acid were added to serum, and extracted them by Bligh-Dyer method to examine the extraction efficiency, we confirmed that cumene hydroperoxide and oxidized linoleic acid were extracted in CHCI3 phase, and hydrogen peroxide in MeOH-H2O phase, respectively. 3. The concentration of lipid hydroperoxide of total lipids extracted from normal adult serum was 2.0×10-5M, and increased proportionally the concentration of lipid hydroperoxide by increasing the amount of serum. 4. When we compared the total lipids extracted by Bligh-Dyer method and total lipids extracted after lipoprotein is precipitated by Yagi method in human blood serum, the concentration of lipid hydroperoxide was showed nearly the same value. From our results, we concluded that the concentration of lipid hydroperoxide in human blood serum could be determined quantitatively by ferrothiocyanate method.
        4,000원
        2538.
        1988.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Contents of total lipids, neutral lipids, glycolipids and phospholipids of seed oils of 16 species of the Labiatae family were determined and their fatty acid compositions were analyzed by gas-liquid chromatography. The results were summarized as follows. 1) Lipid contents of seeds were shown to be 40.6% in Perilla frutescens Britton var. japonica, 32.2% in P. frutescens britton var. acuta, 31.9% in lsodon japonicus, 32.7% in l. inflexus, 48.3% in l. serra, 35.1% in Mosls dianthera, 38.2% in M. punctulata, 33.4% in Nepeta cataria, 26.3% in Agastache rugosa, 30.9% in Eisholtzia ciliata, 18.9% in Salvia splendens, 23.9% in Lycopus maackianus, 49.5% in Clinopodium chinense var. parviflorum, 30.9% in Ametystea caerulea, 33.1% in Leonurus sibircus and 34.3% in Scutellaria basicalensis. 2) Contents of neutral lipids, glycolipids and phospholipids from the seed oils amounted to 98.6%, 0.7%, 0.8% in P. frutescens Britton var. japonica; 95.5%, 1.3%, 3.1% in P. frutescens Britton var. acuta; 95.1%, 1.8%, 3.1% in l. japoincus; 91.4%, 3.5%, 5.1% in l. inflexus; 96.8%, 0.7%, 2.5% in l, serra; 96.0%, 1.8%, 2.2% in Mosla dianthera; 94.7%, 2.0%, 3.3% in M. punctulata; 90.1%, 2.4%, 7.5% in Nepeta cataria; 90.1%, 3.4%, 6.5% in Agastache rugosa; 86.3%, 3.3%, 10.4% in Elsholtzia ciliata; 94.3%, 1.5%, 4.3% in Salvia splendens; 87.2%, 2.9%, 9.0% in Lycopus maackianus; 87.0%, 1.5%, 11.5% in Clinopodium chinense var. parviflorum; 91.8%, 1.6%, 6.6%; 95.5%, 0.4%, 4.1% in Leonurus sibricus; 89.0%, 1.4%, 9.6% in Scutellaria baicalensis. 3) Total lipids revealed the predominace of unsaturated fatty acids (82.0-94.5%) and larger variations were found in the composition of α-linolenic acid (0.4-67.9%) and linoleic acid (11.2-82.9%). High level of α-linoenic acid was present in P. frutescens Britton var. japonica (67.9%), P. frutescens Britton var, acuta (66.0%), lsodon japonicus (65.2%), l. inflexus (59.0%), l. serra (57.3%), Mosla dianthera (60.9%), Nepeta cataria (58.3%), Agastache rugosa (58.5%) and Elsholtzia ciliata (46.2%), and followed by linoleic acid (11.2-32.1%) and oleic acid (9.3-12.2%). However, linoleic acid was the most predominant component in the total lipids of Clinopodium chinense var. parviflorum (62.4%), Ametystea caerules (82.9%), Leonurus sibricus (60.9%) and Scutellaria baicalensis (63.4%), with very small amounts of α-linolenic acid (0.4-3.1%). The total lipids of Salvia splendens, Lycopus maackianus and Mosla punctulata also contained linoleic acid of 31.3%, 48.8% and 53.4%, with a considerable amount of α-linolenic acid of 34.5% 27.0% and 16.7%. Palmitic acid was the major saturated fatty acid in all the oils investigated (4.1-14.2%). 4) Fatty acid profiles of neutral lipids bore a close resemblance to those of total lipids in all the seed oils, but different from those of glycolipids and phospholipids. Fatty acid composition pattern of glycolipids and phospholipids showed a considerably increased level of saturated fatty acids (19.0-66.8%, 17.8-35.2%) mainly composed of palmitic acid and stearic acid, and a noticeable low level of unsaturated fatty acids (41.2-80.9%, 64.7-82.1%) which was ascribed to the decrease in α-linolenic acid of high α-linolenic acid seed oils, and in linoleic acid of high linoleic seed oils, compared to that of total lipids and neutral lipids.
        4,200원
        2540.
        1987.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study is carried out to compare the quality of sesamin oil using to 52 restaurants in city with that of pure sesamin oil. The pure sesamin, corn soybean and perilla oils used reference oil commodities of famous corporations. The fatty acid, sesamin and sterols of reference and restaurant oils are analyzed by gas chromatography. The results are as follows; 1. A pure sesamin oil can be identified with the component and content of fatty acid, sterol and sesamin. 2. In 52 restaurant oils, 12 oils (23%) are estimated as pure sesamin oil and the remainders (77%) are mixed with corn oil, soybean oil an perilla oil. 3. The sesamin oil that is mixed with corn oil is 35%, soybean oil is 17% and perilla oil is 15%.
        4,000원