Journal
MOLECULES
Volume 25, Issue 20, Pages -Publisher
MDPI
DOI: 10.3390/molecules25204615
Keywords
eicosapentaenoic fatty acid (EPA; 20:5 n-3); farmed salmon meat; Nannochloropsis gaditana; nutritional enhancement; vitamin D-3; docosapentaenoic fatty acid (DPA; 22:5 n-3); docosahexaenoic fatty acid (DHA; 22:6 n-3)
Funding
- Ministerio de Ciencias, Agencia Nacional de Investigacion y Desarrollo, (Fondef) [ID14I20110, IT18I0067]
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Omega-3 long-chain polyunsaturated fatty acids (n-3 LC PUFAs) and vitamin D-3 are essential components of human nutrition. A regular human diet is highly deficient in n-3 LC PUFAs. Fish like salmon are highly recommended in the human diet as they are a major source of high-value n-3 LC PUFAs and vitamin D-3. The levels of these nutrients have been decreasing over the last few years in farmed salmon, whose production urgently needs sustainable sources of these nutrients. The microalga Nannochloropsis gaditana (NG) is known for its naturally high potential for the production of eicosapentaenoic (EPA, 20:5 n-3) fatty acid. A commercial diet for Atlantic salmon was supplemented with 1% and 10% of spray-dried NG grown under controlled conditions for a high EPA content. Salmon were harvested on day 49, following which, boneless and skinless salmon meat was recovered from fish and analyzed for the fatty acid profile, total fat, and vitamin D-3. Vitamin D-3, EPA, and docosapentaenoic fatty acid (DPA, 22:5 n-3) levels were significantly increased (p < 0.05) by supplementing the basal diet with 10% NG, thus, NG represents a novel, functional, natural ingredient and a sustainable source of n-3 LC-PUFAs that can raise the levels of healthy fats and vitamin D-3 in farmed salmon meat.
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