Volume No. 11 Issue No.: 1 Page No.: 1-6 July-September 2016

 

MELT CRYSTALLIZATION KINETICS FOR ENRICHMENT OF HIGHLY UNSATURATED FATTY ACID FRACTIONS BASED ON LINSEEDOIL

 

Dasgupta S.*, Dreiack N. andAy P.

Chair of Mineral Processing, Brandenburg University of Technology, Cottbus- Senftenberg (GERMANY)

 

Received on : March 10, 2016

 

ABSTRACT

 

Naturally occurring plant based fats and oils have a huge potential as renewable resources to synthesize chemically new products apart from being widely used as ingredients in various kind of food and cosmetics. Oils are triglycerides which are basically tri-esters made of glycerol and three fatty acids. The latter findsapplication on one hand as raw material for the polymerization of epoxy resins whereas on the other in the manufacturing of biodiesel amongst others. Melt crystallization as a method to enrich a fatty acid mixture with higher unsaturated fractions is becoming increasingly established.A polyunsaturated fatty acid mixture with high concentration of linolenic acid (C 18:3) was chosen for this work. This linolenic oil fatty acid rich mixture was subjected to different temperature profiles in order to optimize maximum yield of unsaturated fatty acid in the mother liquor post isothermal centrifugal separation. The influence of the temperature profile on the quality of the desired product was thereby investigated. To examine the exact composition of the resulting product several analytical methods like Differential Scanning Calorimetry (DSC) and Gas Chromatography (GC) were developed and performed. Product compositions with a total saturated content (C16:0 - palmitic acid and C18:0 - stearic acid) of below 3% was achieved successfully.

 

Keywords : Meltcrystallization, Linseed oil, Poly-unsaturated fatty acid mixture, Differential Scanning Calorimetry, Gaschromatography

 

 

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