评估牛奶和奶制品中的微塑料污染
E Visentin1, G Niero2, F Benetti3
1Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Legnaro, Italy.
NPJ science of food
|July 10, 2025
概括
微塑料在牛奶和奶酪等乳制品中普遍存在,成熟奶酪的污染率最高. 这项研究量化了微塑料的含量和类型,强调了进一步研究乳制品污染途径的必要性.
科学领域:
- 环境科学 环境科学
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
背景情况:
- 人们越来越担心食品中微塑料 (MP) 的存在.
- 与水和海鲜相比,乳制品中MP污染的数据有限.
- 与MP摄入相关的潜在健康风险.
研究的目的:
- 描述和量化牛奶,新鲜奶酪和成熟奶酪中的微塑料.
- 为了确定乳制品中MP的聚合物组成和物理特性.
- 评估不同乳制品类型中MP的度.
主要方法:
- 对28个乳制品样本 (牛奶,新鲜奶酪,成熟奶酪) 的分析.
- 议员的定性和定量表征.
- 在减弱总反射率 (FTIR-ATR) 模式下用于识别和量化的里叶变换红外微光谱学.
- 分析了国会议员的尺寸,形状和颜色.
主要成果:
- 在所有分析的乳制品中检测到微塑料.
- 聚乙烯二甲 (PET) 是最常见的聚合物,其次是聚乙烯 (PE) 和聚烯 (PP).
- 大多数MP都小于150微米,主要是不规则的碎片和灰色粒子.
- 成熟奶酪的MP度最高 (1857MP/kg),其次是新鲜奶酪 (1280MP/kg) 和牛奶 (350MP/kg).
结论:
- 乳制品广泛受到微塑料的污染.
- 在研究的产品中,成熟奶酪的微塑料污染水平最高.
- 需要进行进一步的研究,以了解污染源,并在乳制品供应链中制定缓解策略.
更多相关视频
相关概念视频
Microbes in Food Production
318
Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...
318
Microbial Bioremediation of Plastics
95
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
95
Clinical Significance of Antibiotic Resistance
57
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within...
57


