Purushothaman, Kathiresan, Vu, Nguyen Thanh, Loh, Jiun-Yan, Liang, Bing, Domingos, Jose A., and Vij, Shubha (2026) Stability of muscle fatty acids and proximate composition across phenotypic traits in Malabar red snapper (Lutjanus malabaricus). Journal of Food Composition and Analysis, 153. 109133.

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Abstract

This study evaluated the influence of biological and phenotypic traits on the muscle nutritional composition of Malabar red snapper (Lutjanus malabaricus). A total of 540 farmed fish were analysed for fatty acids, ash, dry matter, and protein across sex, size, weight, health, and colour groups. Muscle lipids were dominated by saturated fatty acids (36.1%), followed by polyunsaturated (35.0%) and monounsaturated fatty acids (27.5%). Major fatty acids included oleic acid (22.7%), linoleic acid (15.5%), docosahexaenoic acid (11.7%), eicosapentaenoic acid (3.0%), α-linolenic acid (1.1%), and arachidonic acid (0.22%). Across all traits, model explanatory power was low (adjusted R² = 0.01–0.09), and most predictors showed no significant effects. When significant associations were detected, effect sizes were small, typically representing changes of less than one percentage point. Proximate components (ash ∼5.4%, dry matter ∼94%, protein ∼22%) also showed minimal variation across phenotypic groups. These results demonstrate that muscle fatty acid and proximate composition are highly stable across biological and phenotypic traits, providing robust baseline data for food composition assessment and supporting the nutritional consistency of farmed Malabar red snapper.

Item ID:	91149
Item Type:	Article (Research - C1)
ISSN:	1096-0481
Keywords:	Aquaculture nutrition, Fatty acids, Nutritional quality, Nutritional stability, Omega-3 fatty acids, Phenotypic traits, Proximate analysis
Copyright Information:	© 2026 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Date Deposited:	10 Apr 2026 04:05
FoR Codes:	30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3005 Fisheries sciences > 300501 Aquaculture @ 100%
SEO Codes:	10 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 1099 Other animal production and animal primary products > 109903 Fish product traceability and quality assurance @ 100%
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