, DANTAGNAN DANTAGNAN, HERMAN PATRICIO, HERNANDEZ ARIAS, ADRIAN JESUS, Quiñones, John A., Díaz, Rommy, Beltran, Jorge F., Velázquez, Lidiana, Cancino, David B., Muñoz, Erwin L., Dantagnan, Patricio P., Hernández Arias, Adrián J., Sepúlveda B., Néstor G., Farias, Jorge G.

This study aimed to analyze the effects on the lipidome of juvenile Oncorhynchus mykiss muscle fed 90% Brassica napus rapeseed oil and different amounts of Durvillaea antarctica Cochayuyo meal (1.5, 3 and 6%) as a replacement for cellulose. The analysis allowed for the identification of 329 lipids, mainly represented by phospholipids and fatty esters. The inclusion of Brassica napus oil significantly increased the levels of C18:2 species and fatty esters of hydroxylated fatty acids, which could play a bioactive role in human health. One of the most abundant lipids in all fillets was Phosphatidylcholine 33:6, which, according to the literature, could be considered a biomarker for the identification of Oncorhynchus mykiss. In all experimental diets, the species Phosphatidylethanolamine 15:1-18:24 showed four-fold higher levels than the control; increments of n-3-and n-6-rich phos-pholipids were also observed. Diets containing Durvillaea antarctica meal did not generate more significant variation in fish muscle phospholipids relative to the muscle of the rapeseed-oil-only group. These lipid species consist of medium-and long-chain fatty acids with different degrees of unsaturation. Still, it appears that the rapeseed oil masks the lipid contribution of the meal, possibly due to the low levels of total lipids in the macroalgae. © 2024 Elsevier B.V., All rights reserved.

, HERNANDEZ ARIAS, ADRIAN JESUS, Calanche Morales, Juan B., Beltran, J. A., Hernández Arias, Adrián J.

Aquaculture represents a vital food production industry that contributes to the global economy and fish supplies. Several studies had suggested that changes in the production process, especially those related to nutritional and feeding interventions may have an impact on the final quality of farmed animal food products including those from aquaculture. An integrated approach is needed to close the gap between consumers response and aquaculture products which sensorial quality aspects could be altered by the inclusion of new alternative protein and lipid sources in aquafeed. Applied research efforts in aquaculture should recognize the significance of consumers behaviour and preferences with the aim of making this industry economically sustainable. Until now, sensory research in aquaculture has been developed in different ways depending on the commercial interest of the species implicated. The sensory analyses generally used in aquaculture were identified in four main application research areas: nutrition and feeding, production aspects, quality product and marketing topics. Applied aquaculture research for the continued growth of this industry needs to be complemented with the findings and possibilities offered by sensometrics. This paper aims to provide an overview of sensory analysis used in aquaculture as an activity that supplies products to the market. The main opportunity that sensometrics could offer to the aquaculture industry is to apply an accurate approach that takes into account the consumer. © 2020 Elsevier B.V., All rights reserved.