Department of Seafood Processing Technology, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey.
Department of Organic Farming, School of Applied Science, Iğdır University, TR-76000 Iğdır, Turkey.
J Hazard Mater. 2021 Oct 15;420:126573. doi: 10.1016/j.jhazmat.2021.126573. Epub 2021 Jul 7.
There are many studies on microplastics (MPs) about the aquatic ecosystems and its components. However, there is limited study on the MPs abundance, identification and sources in processed seafood products which are manufactured for direct human consumption. In this study, rainbow trout (Oncorhynchus mykiss) fillets were packed with different packaging techniques and stored at two different temperatures (+4 and -20°C) for 21 days. The presence, shape, size and polymer type of MPs were determined by ATR-FTIR on certain days (7, 14 and 21 days) in fillets during storage. The chemical quality changes in fillets [with pH, thiobarbituric acid reactive substrate (TBARS), and total volatile basic nitrogen (TVB-N) data] were monitored and the effect of MPs presence was evaluated. At the last step, the estimated MPs intake level in humans was determined with considering the presence of MPs (determined in fillets). The presence of MPs was determined the most in the Polystyrene plate + wrapped film (S) group and the least in the Chitosan film + Polystyrene plate + wrapped film (C) group. When evaluated in terms of chemical parameters, although good results were obtained in all samples stored at - 20°C, the presence of MPs was determined at a high level in fillets which stored at this temperature. As a result of the study, it was determined that the packaging type and storage temperature have significant effects on the presence of MPs and fillet quality.
关于水生生态系统及其组成部分，已有许多关于微塑料（MPs）的研究。然而，对于直接供人类食用的加工海鲜产品中 MPs 的丰度、鉴定和来源的研究却很有限。在本研究中，将虹鳟鱼片用不同的包装技术包装，并在+4 和-20°C 下储存 21 天。在储存过程中的某些天（7、14 和 21 天），通过 ATR-FTIR 确定鱼片内 MPs 的存在、形状、大小和聚合物类型。监测鱼片的化学质量变化[用 pH、硫代巴比妥酸反应底物 (TBARS) 和总挥发性碱性氮 (TVB-N) 数据]，并评估 MPs 存在的影响。最后一步，考虑到 MPs 的存在（在鱼片内测定），确定了人类摄入 MPs 的估计水平。在聚苯乙烯板+包裹膜（S）组中最能检测到 MPs 的存在，在壳聚糖膜+聚苯乙烯板+包裹膜（C）组中最不易检测到 MPs 的存在。就化学参数而言，虽然所有在-20°C 下储存的样本都得到了良好的结果，但在该温度下储存的鱼片内仍检测到 MPs 的高含量。研究结果表明，包装类型和储存温度对 MPs 的存在和鱼片质量有显著影响。
