Baking Reduces Prostaglandin, Resolvin, and Hydroxy-Fatty Acid Content of Farm-Raised Atlantic Salmon (Salmo salar)

• Published in: Journal of Agricultural and Food Chemistry
• Main Authors: Raatz, Susan K., Golovko, Mikhail Y., Brose, Stephen A., Rosenberger, Thad A., Burr, Gary S., Wolters, William R., Picklo, Matthew J.
• Format: Text
• Language: English
• Published: 2011
• Subjects: Article; Atlantic salmon; Salmo salar
• Online Access: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222145; http://www.ncbi.nlm.nih.gov/pubmed/21919483; https://doi.org/10.1021/jf202576k

Consumption of seafood enriched in n-3 polyunsaturated fatty acids (PUFA) is associated with a decreased risk of cardiovascular disease. Several n-3 oxidation products from eicosapentaenoic acid (EPA; 20:5n-3) and docosahexaenoic acid (DHA; 22:6n-3) have known protective effects in the vasculature. It is not known whether consumption of cooked seafood enriched in n-3 PUFA causes appreciable consumption of lipid oxidation products. We tested the hypothesis that baking Atlantic salmon (Salmo salar) increases the level of n-3 and n-6 PUFA oxidation products over raw salmon. We measured the content of several monohydroxy-fatty acids (MHFA), prostanoids, and resolvins. Our data demonstrate that baking did not change the overall total levels of MHFA. However, baking resulted in selective regio-isomeric loss of hydroxy fatty acids from arachidonic acid (20:4n-6), and EPA while significantly increasing hydroxyl-linoleic acid levels. The content of prostanoids and resolvins were reduced several-fold with baking. The inclusion of coating upon the salmon prior to baking reduced the loss of some MHFA but had no effect upon prostanoid losses incurred by baking. Baking did not decrease n-3 PUFA content indicating that baking of salmon is an acceptable means of preparation that does not alter the potential health benefits of high n-3 seafood consumption. The extent to which the levels of MHFA, prostanoids and resolvins in the raw or baked fish have physiologic consequence for humans needs to be determined.