Pereira Ricardo, Costa Mónica, Velasco Cristina, Cunha Luís M, Lima Rui C, Baião Luís F, Batista Sónia, Marques Alexandra, Sá Tiago, Campos Débora A, Pereira Miguel, Jesus Diva, Fernández-Boo Sergio, Costas Benjamin, Pintado Manuela, Valente Luisa M P
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.
ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua Jorge de Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
Antioxidants (Basel). 2022 Mar 26;11(4):636. doi: 10.3390/antiox11040636.
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) or reinforced dose (VITE; 500 mg kg). 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 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 of vitamin E.
合成维生素E常用于水产饲料中，以防止鱼类氧化应激，并在储存期间延缓饲料和鱼肉的氧化，但消费者更倾向于天然抗氧化剂来源。将富含蔬菜抗氧化剂的副产品、干番茄（TO）、胡萝卜（CA）和香菜（CO）的潜力与日粮中常规剂量（CTRL；100毫克/千克）或强化剂量（VITE；500毫克/千克）的合成维生素E的潜力进行了比较。天然抗氧化剂以2%的比例添加到CTRL组。然后将混合物挤压并干燥，生成五种实验日粮，在12周内喂给欧洲鲈鱼幼鱼（114克）。挤压日粮中的维生素E和类胡萝卜素含量有降解迹象。实验日粮对鱼类生长、身体组成、免疫调节反应、肌肉和肝脏抗氧化潜力、感官特性或消费者接受度的影响非常有限。总体而言，实验结果表明，与喂食含100毫克/千克常规剂量维生素E日粮的鱼类相比，500毫克/千克的高添加剂量维生素E和2%添加量的天然抗氧化剂均未提供额外的抗氧化保护。
