Analysis of the thermal and physicochemical properties of unsaturated fatty acid concentrates from cobia (Rachycentron canadum) and Argentine croaker (Umbrina canosai) waste




Fish oil, UFA, Urea complexation


Several studies have been carried out to obtain unsaturated fatty acid (UFA) concentrates, due to their nutritional importance in food applications. The aim of this work was to obtain UFA concentrates from bleached cobia (Rachycentron canadum) and Argentine croaker (Umbine canosai) oil by complexation with urea, and to evaluate their physicochemical and thermal properties during processing. The fatty acids found in high amounts in the crude and bleached oils of cobia and Argentine crocker were palmitic, oleic and linoleic acids. Higher percentages of UFA were present in the oils extracted from the visceras, around 69 and 63% for cobia and Argentine croaker, respectively, and after complexation with urea, the percentages of UFA present in both concentrates were around 88%. Through the thermograms it was possible to observe that the UFA concentrates showed a 50% decrease in their maximum degradation temperature.


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AOAC. 1995. Association of Official Analytical Chemists. Official Methods of Analysis.16th ed., Arlington.

AOAC. 2002. Association of Official Analytical Chemists. Official Methods of Analysis. Arlington.

AOCS. 2017. Official methods and recommended practices of the American Oil Chemist's Society, 7th ed. Urbana, IL: AOCS Press.

Araújo KLGV, Epaminondas PS, Silva MCD, Lima AEA, Rosenhaim R, Maia AS, Soledade LEB, Souza AL, Santos IMG, Souza AG, Queiroz N. 2011. Influence of thermal degradation in the physicochemical properties of fish oil. J. Therm. Anal. Calorim. 106, 557-561.

Bligh EG, Dyer WJ. 1959. A rapid method of total lipid extraction and purification. Can. J. Biochem. Physiol. 27, 911-917. PMid:13671378

Boran G, Karaçam H, Boran M. 2006. Changes in the quality of fish oils due to storage temperature and time. Food Chem. 98, 693-698.

Box GEP, Hunter JS, Hunter WG. 2005. Statistics for Experiments: Design, Innovation, and Discovery (2nd Ed.), John Wiley and Sons, Inc. Hoboken, New Jersey. ISBN: 978-0 471-71813-0

Chakraborty K, Vijayagopal P, Chakraborty RD, Vijayan KK. 2009. Preparation of eicosapentaenoic acid concentrates from sardine oil by Bacillus circulans lipase. Food Chem. 120, 433-442.

Carvalho PO, Campos PRB, Noffs MD, Oliveira JG, Shimizu MT, Silva DM. 2003. Application of microbial lipases to concentrate polyunsaturated fatty acids. New Chem. 26, 75-80.

Contreras-Gusmán E. 1994. Chemical composition of fish, crustaceans and molluscs (1st Ed). Biochemistry of Fish and Derivatives. FUNEP, São Paulo.

Coelho AD, Santos KC, Domingues RCC, Mendes AA. 2013. Production of concentrated fatty acids by hydrolysis of vegetable oils catalyzed by plant lipase. New Chem. 36, 1164-1168.

Costa-Singh T, Bitencourt TG, Jorge N. 2012. Physical-chemical characterization of bioactive compounds of the oil from cutia nut (Couepia edulis). Rev. Inst. Adolfo Lutz. Mag 71, 61-68.

Cretton M, Rost E, Sobczuk TM, Mazzuca M. 2016. Variation in the proximate composition and fatty acid profile recovered from Argentine hake (Merluccius hubbsi) waste from Patagonia. Grasas Aceites 67, e122.

Crexi VT Monte, ML Souza-Soares LA, Pinto LAA. 2010. Production and refinement of oil from carp (Cyprinus carpio) viscera. Food Chem. 119, 945-950.

Crexi VT, Monte ML, Pinto LAA. 2012. Polyunsaturated fatty acid concentrates of carp oil: Chemical hydrolysis and urea complexation. J. Am. Oil Chem. Soc. 89, 329-334.

Druzian JI, Marchesi CM, Scamparini ARP. 2007. Fatty acid profile and proximate composition of carp (Cyprinus carpio) feed artificial food and pig manure. Rural. Sci. 37, 539-544.

Esquerdo VM, Silva PP, Dotto GL, Pinto LAA. Nanoemulsions from unsaturated fatty acids concentrates of carp oil using chitosan, gelatin, and their blends as wall materials. Eur. J. Lipid Sci. Technol. 120, 1-9.

FAO. 2016. The State of World Fisheries and Aquaculture 2016. Contributing to food security and nutrition for all. Rome. 200. ISBN 978-92-5-109185-2

Gangidi RR, Proctor A. 2004. Photochemical Production of Conjugated Linoleic Acid from Soybean Oil. Lipids 39, 577-582. PMid:15554158

Ghasemian S, Sahari MA, Barzegar M. 2015. Concentration of Omega-3 polyunsaturated fatty acids by polymeric membrane. Food Sci. Technol. 50, 2411-2418.

Greene DHS, Selivonchick DP. 1987. Lipid metabolism in fish. Prog. Lipid Res. 26, 53-85.

Huang J, Sathivel S. 2008. Thermal and rheological properties and the effects of temperature on the viscosity and oxidation rate of unpurified salmon oil. J. Food Eng. 89, 105-111.

Liang D, Ma YHW, Zhao Z, Jiang S, Wang Y, Zhang X. 2018. Concentration of linoleic acid from cottonseed oil by starch complexation. Chinese J. Chem. Eng.

Liao IC, Leaño EM. 2007. Cobia aquaculture: research, development and commercial production. Asian Fisheries Society, Taiwan, p. 178. ISBN: 9789860086638 986008663X

Liu SC, Li DT, Hong PZ, Zhang CH, Ji HW, Gao JL, Zhang L. 2009. Cholesterol, Lipid Content, and Fatty Acid Composition of Different Tissues of Farmed Cobia (Rachycentron canadum) from China. J. Am. Oil Chem. Soc. 86, 1155-1161.

Lu R, Sheng GP, Hu YY, Zheng P, Jiang H, Tang Y, Yu HQ. 2011. Fractional characterization of a bio-oil derived from rice husk biomass and bioenergy. Biomass Bioenergy 35, 671-678.

Militelli MI, Macchi GJ, Rodrigues KA. 2012. Comparative reproductive biology of Sciaenidae family species in the Rio de la Plata and Buenos Aires Coastal Zone, Argentina. J. Mar. Bio. Assoc. United Kingdom 93, 413-423.

Monte ML, Monte ML, Pohndorf RS, Crexi VT, Pinto LAA. 2015. Bleaching with blends of bleaching earth and activated can reduces color and oxidation products of carp oil. Eur. J. Lipid Sci. Technol. 117, 829-836.

Paim RM, Monte ML, Rizzi J, Pinto LAA. 2012. Concentrados de ácidos graxos insaturados obtidos a partir de óleo de carpa (Cyprinus carpio) utilizando o método da complexação com ureia. Vetor 22, 18-37. E-ISSN: 2358-3452

Pohndorf RS, Cadaval Jr TRS, Pinto LAA. 2016. Kinetics and thermodynamics adsorption of carotenoids and chlorophylls in rice bran oil bleaching. J. Food Eng. 185, 9-16.

Santos JCO, Santos IMG, Conceição MM, Porto SL, Trindade MFS, Souza AG, Prasad S, Fernandes Jr VJ, Araújo AS. 2004. Thermoanalytical, kinetic and rheological parameters of commercial edible vegetable oils. J. Therm. Anal. Calorim. 75, 419-428. ISSN: 1388-6150

Taheri S, Motallebi AA, Fazlara A, Aftabsavar Y, Aubourg SP. 2012. Effect of previous ascorbic acid treatment on the fatty acid profile of cobia (Rachycentron canadum) fillets during frozen storage. Grasas Aceites 63, 70-78.

Vyncke W. 1970. Direct determination of the thiobarbituric acid value in trichloroacetic acid extracts of fish as a measure of oxidative rancidity. Fette-Seifen Anstrichmittel 12, 1084-1087.

Wanasundara UN, Shahidi F. 1999. Concentration of omega 3-polyunsaturated fatty acids of seal blubber oil by urea complexation: optimization of reaction conditions. Food Chem. 65, 41-49.

Windsor M, Barlow S. 1984. Introduction to the Fishing Products. Introducción a los Subproductos de Pesqueria. Acribia Publishing House, Spain, p 4-35; 84-97; 180-201. ISBN 978-84-200-0523-2



How to Cite

Nobre LR, Monte ML, Silva PP, Engelmann JI, Pohndorf RS, Pinto LA. Analysis of the thermal and physicochemical properties of unsaturated fatty acid concentrates from cobia (Rachycentron canadum) and Argentine croaker (Umbrina canosai) waste. grasasaceites [Internet]. 2019Dec.30 [cited 2022Nov.28];70(4):e334. Available from:




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