38433-95-3Relevant academic research and scientific papers
Endophytic fungi associated with Mediterranean plants as a source of mycelium-bound lipases
Torres, Merce,Dolcet, Marta M.,Sala, Nuria,Canela, Ramon
, p. 3328 - 3333 (2003)
A screening of endophytic fungi isolated from Mediterranean plants rendered a mycelium-bound lipase from a strain of Rhizopus oryzae that catalyzed the esterification of fatty acids in isooctane. The influence of various factors (water content, temperature, and pH) on ester synthesis was investigated. Catalytic activity was inversely correlated with water content. This enzyme was active over the entire pH range studied, from pH 3 to pH 8, and activity was maximal at pH 4 and pH 7. The enzyme was thermostable, with maximal activity at 60 °C.
Novel H3PW12O40: Catalysed esterification reactions of fatty acids at room temperature for biodiesel production
De Godoi Silva, Vinicius Wilker,Laier, Leticia Oliveira,Silva, Marcio Jose Da
experimental part, p. 207 - 211 (2010/08/03)
The catalytic activity of Bronsted acids on fatty acid (FA) esterification at room temperature has been investigated. Noticeably, the H 3PW12O40 heteropolyacid (HPW) showed a very high activity than other catalysts herein evaluated, i.e. p-toluene sulfonic acid and sulfuric acid. High yields in ethyl esters (ca. 90%) were reached after a 4 h reaction at 25 °C on a HPW catalysed reactions. Despite the fact that HPW catalyst was used in a homogeneous phase, it could be efficiently recovered and reused through out a simple recycling protocol, without any activity loss. The effects of alcohol and the FA nature on yield reaction were also investigated.
Process for producing fatty acid alkyl ester composition
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Page/Page column 7-8, (2008/06/13)
An object of the present invention is to solve a problem of separation and recovery of catalysts present in an alkali metal catalytic method currently often used, a problem of excess consumption of a catalyst by a free fatty acid in a raw material, and other problems, and to solve a problem of the presence of a large excess amount of alcohol in a conventional supercritical methanol method, and to provide a method for producing a fatty acid alkyl ester composition in a reaction system containing water and free fatty acid present. The present invention has attained the above-mentioned object by provided a method for producing a fatty acid alkyl ester composition using fats and oils containing a fatty acid glyceride and/or fatty acid, wherein alcohol and/or water is allowed to co-exist with the above-mentioned fats and oils and the reaction is conducted under conditions of a temperature of 100° C. to 370° C. and a pressure of 1 to 100 MPa.
HYDROGENATION OF FATTY ACIDS ESTERS. III. HYDROGENATION OF METHYL (9Z,12Z)-OCTADECADIENOATE AND METHYL (9Z,12Z,15Z)-OCTADECATRIENOATE
Krupickova, Jana,Vcelak, Jaroslav,Hetflejs, Jiri
, p. 2593 - 2604 (2007/10/02)
The title hydrogenation catalyzed by nickel(II) 2,4-pentanedionate-triethylaluminium system has been studied with the use of combination of initial rate measurements with time changes of product distribution.It was found that the hydrogenation of methyl (9Z,12Z)-octadecadienoate is first order in the octadecadienoate.Similar results were obtained also for (9Z,12Z,15Z)-octadecatrienoate.The course of both reactions has been described by models involving set of parallel and consecutive hydrogenation steps and reversible isomerizations.Computer rate constants for hydrogenation of methyl (9Z,12Z)-octadecadienoate support qualitative conclusions deduced from the product analysis.
