Micro-plastics (MPs) have recently been detected in the environmental medium and in a lot of products, particularly in the products consumed by humans. In the present study, the contamination of vinegar containers by MPs was investigated from nine popular brands consumed in Iran. Using a Nile Red staining and stereomicroscope analysis, MPs were detected in all sample brands. The most MPs were found in the shape of fragment (94 %), while only a few was in the fiber shape (6%). MPs were identified by using FTIR stereoscopy and PE and HDPE were founded as the most likely polymers. The annual human exposure to average concentration of MP was approximately estimated as 4.9 and 21.2 mg/kg/bw/year corresponding to optical detection for adult and children, respectively. While the annual intake was around 4.7 and 20.7 mg/kg/bw/year according to fluorescence observation. The findings of the present study showed that the MPs particles releasing can occur from food plastic container into the content like the vinegar.

最近在环境介质和许多产品中检测到微塑料 (MPs)，特别是在人类消费的产品中。在本研究中，议员对伊朗消费的九个流行品牌醋容器的污染进行了调查。使用尼罗红染色和立体显微镜分析，在所有样品品牌中都检测到 MP。大多数 MP 以碎片形状 (94%) 发现，而只有少数呈纤维状 (6%)。MPs 是通过使用 FTIR 立体显微镜确定的，PE 和 HDPE 被认为是最有可能的聚合物。每年人类暴露于 MP 平均浓度的估计分别为 4.9 和 21.2 毫克/千克/体重/年，对应于成人和儿童的光学检测。而每年的摄入量约为 4.7 和 20。根据荧光观察，7 mg/kg/bw/年。本研究的结果表明，MPs 颗粒可以从食品塑料容器中释放到像醋一样的内容物中。