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Predecessor
Volume 31, Issue 12
Displaying 1-11 of 11 articles from this issue
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Mitsuyo OKAZAKI1982 Volume 31 Issue 12 Pages 973-980
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
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Kaoru TSUJII1982 Volume 31 Issue 12 Pages 981-987
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
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Koichiro AOKI, Koji ONDA, Shuji OKUMURA, Mamoru MURATA, Koichi HIRAMAT ...1982 Volume 31 Issue 12 Pages 988-992
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSIn the earlier date, interactions between dyes and heat-treated bovine serum albumin (BSA) were studied using the whole solutions of heat-treated BSA themselves. Since it is known that heat-treated BSA consists of several components, interactions between dye and some of the individual components isolated from heat-treated solution of BSA are to be studied.
By use of the native BSA monomer, components (1') and (2), spectrophotometric measurements were made at pH 7.O and 25°C on systems of Orange II and these albumin species. Components (1') and (2) were isolated from BSA solution heat-treated at pH 9 and 65°C for 60 min. Spectrophotometric data were analyzed by Terada-Miyake's method [Kolloid Z. Z. Polym., 251, 139 (1973)] to determine binding parameters. For the native BSA monomer, n (number of binding sites on the protein for the dye) was 6.4 and K (equilibrium constant of the system) was O.92 × 105 M-1. For components (1') and (2), values of n and K were different from those of the native BSA monomer.View full abstractDownload PDF (598K) -
Influence of Cultural Conditions on Lipid Compositions of Two Strains of Mortierella isabellina from n-Paraffin as a Carbon SourceToshihiro YOKOCHI, Osamu SUZUKI1982 Volume 31 Issue 12 Pages 993-1003
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSThe influence of cultural conditions, especially C/N ratio of medium, growth temperature, nitrogen source and chain length of hydrocarbons on the amounts of lipids formed from n-paraffin in the my-celium of two strains (IFO 7824 and 7884) of Mortierella isabellina which were found to accumulate large amount of lipids in the mycelium incubated by using glucose as a carbon source was investigated.The mycelium of the strains were observed to be grown well when cultured by using decane as a carbon source. The maximum accumulation of lipids, 0.375g/400 ml medium, containing 5.0ml (3.64 g) of decane at C/N ratio of 24.1 by using NH4NO3 as a nitrogen source when grown at 30°C. In this case, the lipid coefficient which total intracellular lipid weight produced/100 g of decane was obtained 10.3.The fatty acids compositions of neutral and polar lipid fractions fractionated from lipid extracts by silicic acid column chromatography and the lipid compositions of both fractions were determined. The influence of the cultural conditions on these compositions was also investigated.View full abstractDownload PDF (2088K) -
Detection Limit of PeroxidesSetsuko HARA, Osamu WASHIZU, Yoichiro TOTANI1982 Volume 31 Issue 12 Pages 1004-1008
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSFor determination of low peroxide values (POV) of lipids, the JOCS method was modified by the employment of a potentiometer instead of starch as an indicator.
This method required only 0.02 g of lipids to determine POV when POV is higher than 1 meq/kg, and 0.1 g of lipids when that is lower than 1 meq/kg. As it was found that chloroform could be replaced by the Folch solvent (Chloroform : Methanol = 2 : 1) in the determination, the amount of per-oxides of lipids occuring in biological samples was measured with the latter solvent, so that there was no need of solvent removal after extraction.
As compared with the thiobarbituric acid test which reads the quantity of malonaldehyde, one of the decomposed products of peroxides, an advantage of the present method is that a small amount of peroxides which are the first products at the initial stage of oxidation of lipids can be determined directly, while the amount of malonaldehyde is less than that of the peroxides at the stage and not always proportional to the degree of oxidation of mother lipids.View full abstractDownload PDF (726K) -
Keizo OGINO, Hitoshi YAMAUCHI, Toshiro SHIBAYAMA1982 Volume 31 Issue 12 Pages 1009-1013
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSThe interfacial properties of some amino acids in their aqueous solutions were studied in terms of surface and interfacial tension of the solutions. Dodecane was used as a non-polar oil phase and oleic acid as a polar oil phase at the oil/water interface. Surface and interfacial tension decreased with increas-ing concentration of amino acids. Increasing hydrophobicity of amino acid side chain (Δft) tends to decrease surface and interfacial tension in the same concentration of amino acids. The Δft is an average of differences of standard free energy change on the basis of glycine when amino acid is transfered from organic solvent to water. This is considered that hydrophobic amino acids are difficult to exist in the bulk, because water molecules in the neighborhoods of amino acid side chains form ice-berg structure.Basic amino acids and oleic acid formed salt at the interface and the character of its salt was similar to that of lyotropic mesomorphism. Interfacial tension decreased considerably at dodecane containing oleic acid/basic amino acid solution interface.View full abstractDownload PDF (734K) -
Yoshiro ABE, Shuichi MATSUMURA, Kouichi MATSUDA1982 Volume 31 Issue 12 Pages 1014-1020
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSAseries ofβ-glycols such as 1, 3-alkanediols (C8C18), erythro-and threo-2, 4-alkanediols (C3C16), and erythro-and threo-3, 5-, 4, 6-, .5, 7-dodecanediols were prepared and their antifoaming pro-perties for the aqueous solution of sodium dodecylbenzenesulfonate as a foaming agent were evaluated by the Ross-Miles foam tester (JIS K 3362) and the dynamic foam meter (JIS K 2518).
The results of these experiments were shown in Fig.-1Fig.-15. It was found that the aatifoam-ing properties of the β-glycols were dependent upon their molecular weights, the position and the rotational arrangements of two hydroxyl groups in the molecules.
(1) The antifoaming Powers of the β-glycols increased in the order C17=C16>C18=C15=C14>C13>C12>C11=C10=C9=C8.
(2) The antifoaming powers of dodecanediols were greater when two hydroxyl groups were located near the center of an alkyl chain (Fig.-18).
(3) Threo isomers showed better antifoaming Properties than those of erythro isomers (Fig.-17 and Fig.-18).View full abstractDownload PDF (923K) -
Kazushige MARUYAMA, Chizuo YONESE1982 Volume 31 Issue 12 Pages 1021-1026
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSInvestigations on the direct esterification of oleic acid and equimolecular or a large excess of glycerol were carried out under the conditions of reaction temperatures at 125280°C, for 36h in the absence of a catalyst. Reaction products were determined by the TLS.
1) The optimum preparative conditions for maximum monooleoylglycerol were given and under these, quantitative results of the product were obtained as follows : Molar ratio of oleic acid and glycerol, 1 : 5, Reaction temperature and time, 250°C, 3h, Weight ratio of component, monooleoylglycerol (MO) 78% (1-MO 52%, 2-MO 26%), dioleoylglycerol (DO) 21% (1, 3-DO 1.3%, 1, 2-DO 8%), trioleoylglycerol and oleic acid, trace.
2) It was recognized that reactioas of oleic acid (O) with glycerol (G) could be separated into three types :
(a) Esterification (molar ratio of O/G=1/1, at 125200°C)
(b) Reactions among acylglycerols formed by esterification (O/G=1/1, approximately at 250°C)
(c) Glycerolysis (O/G=1/3, 1/5, approximately at 250°C)View full abstractDownload PDF (673K) -
Synthesis of Diethylenetriaminepentaacetic Acid-Dialkyl Ester Chelatesnand Evaluation of the Surface-Active PropertiesShigeru MAEDA, Mitsue FUKUSHIMA, Morio IMAYOSHI, Toshio TAKESHITA1982 Volume 31 Issue 12 Pages 1027-1028
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSDiethylenetriaminepentaacetic acid (DTPA) dianhydride was treated with five alcohols (C8C16) to give new five chelating agents, DTPA-dialkyl esters.
The equivalent reaction between the chelating agents and several metal ions, gave the corresponding 1 : 1 metal.chelates in good yields.
These metal chelates and sodium salts of the chelating agents were found to be more soluble in organic solvents than those of DTPA-monoalkyl esters which have been reported in previous paper, and to have good surface-active properties, especially dispersing power.View full abstractDownload PDF (317K) -
Isao MARUISHI1982 Volume 31 Issue 12 Pages 1029-1032
Published: December 20, 1982
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSThe removal of some sodium salts of fatty acids in aqueous solutions was studied by reverse osmosis process (batch system) using cellulose acetate membranes.
The results were as follows :
When the concentration of sodium salts of fatty acids is 100 mg/l, the rejection showed the low values when the carbon number of alkyl groups on the sodium salts of fatty acids was C2 to C8, and when the carbon number of alkyl groups increases to C10C18 the rejection tends to be higher. The difference in water permeability was little between C2 to C18 sodium salts of fatty acids.
The rejection increased as the surface tension of sodium salts of fatty acids became lower.View full abstractDownload PDF (491K) -
Yuji YONEYAMA, Keizo OGINO1982 Volume 31 Issue 12 Pages 1033-1036
Published: December 20, 1982
Released on J-STAGE: November 10, 2009
JOURNAL FREE ACCESSThe physico-chemical property and performance of detergent containing sodium poly (oxyethylene) alkyl ether carboxylate as a surface active agent was studied in terms of the detergent which was composed without sodium tripolyphosphate (STPP). Soap (sodium oleate : sodium stearate : sodium palmitate= 3 : 1 : 1), sodium dodecylbenzenesulfonate, and sodium dodecyl sulfate were used as the other surface active agent to comparison. The detergents were examined for surface tension, foam performance and foam stability, and detergency. As a result, it was suggested that sodium poly (oxyethylene) alkyl ether car-boxylate was more effective as a surface active agent for a detergent which was composed without STPP.View full abstractDownload PDF (466K)
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