Comparative Analysis between Synthetic Vitamin E and Natural Antioxidant Sources from Tomato, Carrot and Coriander in Diets for Market-Sized Dicentrarchus labrax

Antioxidants

Débora A. Campos¹  Miguel Pereira¹  Manuela Pintado¹  Diva Jesus¹  Ricardo Pereira²  Mónica Costa²  Tiago Sá²  Cristina Velasco²  Sergio Fernández-Boo²  Benjamin Costas²  Luís F. Baião²  Sónia Batista²  Luisa M. P. Valente²  Alexandra Marques²  Luís M. Cunha³  Rui C. Lima⁴ 

[1] CBQF–Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal;CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal;GreenUPorto/INOV4Agro & DGAOT, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal;Sense Test Lda., R. Zeferino Costa 341, 4400-345 Vila Nova de Gaia, Portugal;

关键词: circular economy;    European sea bass;    functional aquafeeds;    natural antioxidants;    vitamin E;    carotenoids;   

DOI  :  10.3390/antiox11040636

来源: DOAJ

【 摘 要 】

Synthetic vitamin E is commonly used in aquafeeds to prevent oxidative stress in fish and delay feed and flesh oxidation during storage, but consumers’ preferences tend towards natural antioxidant sources. The potential of vegetable antioxidants-rich coproducts, dried tomato (TO), carrot (CA) and coriander (CO) was compared to that of synthetic vitamin E included in diets at either a regular (CTRL; 100 mg kg⁻¹) or reinforced dose (VITE; 500 mg kg⁻¹). Natural antioxidants were added at 2% to the CTRL. Mixes were then extruded and dried, generating five experimental diets that were fed to European sea bass juveniles (114 g) over 12 weeks. Vitamin E and carotenoid content of extruded diets showed signs of degradation. The experimental diets had very limited effects on fish growth or body composition, immunomodulatory response, muscle and liver antioxidant potential, organoleptic properties or consumer acceptance. Altogether, experimental findings suggest that neither a heightened inclusion dose of 500 mg kg⁻¹ of vitamin E, nor a 2% inclusion of natural antioxidants provided additional antioxidant protection, compared to fish fed diets including the regular dose of 100 mg kg⁻¹ of vitamin E.

【 授权许可】

Unknown