开发一种消化方法,用于量化白奶酪中的微塑料,并通过微拉曼成像检测
Fatmagul Halici Demir1, Emel Yilmaz2, Irem Damar2
1Trakya University, Arda Vocational School, Department of Food Processing, Edirne, Turkey.
Food research international (Ottawa, Ont.)
|January 9, 2026
概括
在白奶酪中使用一种新的过氧化消化方法确定了微塑料 (MP). 这项研究强调了消费者通过乳制品接触到MP的潜在风险,强调了需要标准化检测技术的需要.
科学领域:
- 食品安全 食品安全
- 环境科学 环境科学
- 分析化学 分析化学
背景情况:
- 微塑料 (MP) 对食品安全和人类健康构成风险.
- 白奶酪由于高脂肪和蛋白质含量,为MP分析提供了一个具有挑战性的矩阵.
- 现有的化学消化方法往往不足,有可能损坏聚合物.
研究的目的:
- 开发和验证一种有效的方法来隔离和识别白奶酪中的MP.
- 在商业白奶酪样本中量化MP污染水平.
- 确定目前存在的MP类型并探索潜在的污染源.
主要方法:
- 十种化学消化方案的比较评价.
- 在55°C下使用35%的过氧化 (H2O2) 进行轻度氧化处理的优化,持续7天.
- 使用微拉曼光谱学对孤立的MP进行分析.
主要成果:
- 协议10 (35%H2O2,55°C,7天) 证明对MP隔离最有效.
- 在三个奶酪样本中发现了每100克的50,48和40个MP的数量.
- 确定了11种不同的MP类型,其中聚乙烯和聚是最常见的.
结论:
- 轻度氧化H2O2消化适合在像奶酪这样的脂肪食物矩阵中进行MP分析.
- 包装和环境因素是乳制品中MP污染的重要因素.
- 标准化方法对于监测食品供应中的MP污染至关重要.
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