Kendler Sophie, Thornes Frida Walle, Jakobsen Anita Nordeng, Lerfall Jørgen
Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Front Nutr. 2023 Mar 8;10:1118094. doi: 10.3389/fnut.2023.1118094. eCollection 2023.
Exploring and making use of underutilized marine resources can be a sustainable approach to achieve future demands of fish consumption by the ever-growing population. Five species, namely European plaice (), European flounder (), lemon sole (), megrim (), and thornback ray (), often captured as by-catch in Norway, were characterized for their nutritional value and potential accumulation of hazardous components. The proximate composition, protein profile, fatty acid profile as well as essential and toxic trace elements and polychlorinated biphenyls (PCBs) were analyzed. Digestible indispensable amino acid (DIAA) ratios and scores (DIAAS) and contributions of omega-3 fatty acids to the diet were calculated. Analysis on proximate composition revealed low fat contents of 0.74 to 1.25% and sufficient protein contents between 16.9 and 24% in the five species. Results of DIAA indicate a profitable distribution, with contributions exceeding the daily intake recommendations for an adult person related to a 200 g fillet. Moreover, findings on the distribution of eicosapentaenoic (EPA) and docosahexaenoic acid (DHA) showed remarkable results, considering that the investigated species are lean fish. All five investigated fish exceed the recommended average daily intake level (AI) of EPA + DHA in a 200 g portion. As to toxic trace elements and PCBs, no significantly elevated levels were found considering a portion size of 200 g. Consequently, the nutritional quality of the investigated fish can be regarded as profitable with overall low potential health risks.
探索和利用未充分利用的海洋资源可能是一种可持续的方法，以满足不断增长的人口对未来鱼类消费的需求。在挪威，有五种鱼类常被作为副渔获物捕获，分别是欧洲鲽、欧洲比目鱼、柠檬鲽、大口鳒和棘背鳐，对它们的营养价值和有害成分的潜在积累进行了特征分析。分析了其近似成分、蛋白质谱、脂肪酸谱以及必需和有毒微量元素及多氯联苯（PCBs）。计算了可消化必需氨基酸（DIAA）比率和得分（DIAAS）以及ω-3脂肪酸对饮食的贡献。近似成分分析表明，这五种鱼类的脂肪含量较低，为0.74%至1.25%，蛋白质含量充足，在16.9%至24%之间。DIAA结果表明分布有利，对于200克鱼片而言，其贡献超过了成年人每日摄入量建议。此外，考虑到所研究的鱼类为低脂鱼，二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）的分布结果显著。所有五种被研究的鱼类在200克的份量中都超过了EPA + DHA的建议平均每日摄入量水平（AI）。至于有毒微量元素和多氯联苯，考虑到200克的份量，未发现显著升高的水平。因此，所研究鱼类的营养质量可以被认为是有益的，总体健康风险较低。
