ACIDOLYSIS OF SEAL BLUBBER OIL WITH LAURIC ACID

• Published in: Journal of Food Lipids
• Main Authors: SENANAYAKE, S.P.J. NAMAL, SHAHIDI, FEREIDOON
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2007
• Subjects: General Chemistry; Food Science; Phoca groenlandica
• Online Access: http://dx.doi.org/10.1111/j.1745-4522.2006.00073.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1745-4522.2006.00073.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1745-4522.2006.00073.x

ABSTRACT The purpose of this study was to modify the fatty acid composition of seal ( Phoca groenlandica ) blubber oil by incorporation of lauric acid (12:0; a medium chain fatty acid). Of the three enzymes that were employed in the initial screening, sn ‐1,3‐regiospecific lipase from Mucor miehei (Lipozyme IM) exhibited the highest activity and was further studied for the acidolysis of seal blubber oil with 12:0. The fatty acid composition of modified seal blubber oil was different from that of the unaltered oil. The optimum substrate mole ratio of seal blubber oil to 12:0 for M. miehei lipase was 1:3. The time course of the reaction demonstrated that 29.7% lauric acid incorporation was obtained in 24 h. Stereospecific analyses by pancreatic lipase revealed that M. miehei lipase incorporated 12:0 predominantly at the sn ‐1 and sn ‐3 positions of the triacylglycerol molecules.