Fatty acid concentration of farmed tilapia (oreochromis niloticus) in selected sites in the Philippines

Publication Date


Document Type


Publication Title

Pakistan Journal of Medical and Health Sciences


Background Farm-raised tilapia contains very low levels of the beneficial very long-chain omega-3 fatty acid and very high levels of omega-6 fatty acid. Excessive amounts of omega-6 fatty acids and a very high omega-6/omega-3 ratio, promote the pathogenesis of many diseases, including cardiovascular disease, cancer, and inflammatory and autoimmune diseases, whereas increased levels of omega-3 PUFA (a low omega-6/omega-3 ratio) exert suppressive effects. Aim: To determine the omega-3 and omega-6 fatty acid content of farmed tilapia and the omega-6/omega-3 ratio. Methods: Samples of farmed tilapia were taken from four sites namely: Batangas, Nueva Ecija, Pampanga and Isabela. The omega-3 and omega-6 fatty acid levels in farmed tilapia and the omega-6/omega-3 ratiowere analyzed using gas chromatography. Results:Tilapia from Isabela has the highest amount of fatty acids for both omega-6 (1.2 mg/100g) and omega-3 (EPA 1.5mg/100g; DHA 61.8 mg/100g) respectively.On the other hand, tilapia from Batangas has the lowest amount of total fatty acids with omega-6 of 0.70 mg/100g and omega-3 of EPA 4.2 mg/100g and DHA 2.2 mg/100g. For all the samples from each site, omega-3 has a higher amount of fatty acid compared to its omega-6 fatty acid while the omega-6 and omega-3 ratio in all the four sites wasless than 1:1. Conclusion: The omega-3 (eicosapentaenoic acid and docosahexaenoic acid) fatty acid concentration of farmed tilapia taken from Isabela, Nueva Ecija, Pampanga and Batangas has higher concentration than omega-6 and the ratio between the two fatty acids met the values for the recommended ratio.

First Page


Last Page


To view the document, please click the DOI link after the APA Citation.