果蔬泡沫网套中荧光增白剂及有机偶氮颜料筛查及迁移特征

目的 研究果蔬泡沫网套中风险因子的迁移情况,以期为果蔬泡沫网套的安全监管提出建议.方法 选用市售的果蔬泡沫网套进行荧光增白剂及有机偶氮颜料筛查,筛查出的风险因子在体积分数为4％的乙酸、体积分数为95％的乙醇及异丙醇模拟物中进行模拟迁移实验.结果 果蔬泡沫网套中含有荧光增白剂4,4-双(2-苯并恶唑基)二苯乙烯(OB-1),未检出有机偶氮;模拟迁移实验表明荧光增白剂OB-1能迁移至体积分数为95％的乙醇和异丙醇模拟物中.结论 果蔬泡沫网套中荧光增白剂OB-1易迁移至非酸性物质或者油性物质中,对人体健康可能存在潜在威胁.

Screening and Migration Characteristics of Fluorescent Whitening Agents and Organic Azo Pigments in Fruit and Vegetable Foam Nets

The work aims to study the migration of risk factors in the fruit and vegetable foam nets to make recommendations for the safety supervision of fruit and vegetable foam nets. The commercially available fruit and vegetable foam nets were used as the samples for screening fluorescent whitening agents and organic azo pigments. The risk factors screened out were used as the detection indexes of simulated migration experiments in 4% acetic acid, 95% ethanol, and isopropanol simulants. The screening experiments showed that the fruit and vegetable foam nets contained the fluorescent whitening agent 4, 4-bis (2-benzoxazolyl) stilbene (OB-1) while the organic azo pigment was not detected in the samples. In the migration experiments, the optical brightener OB-1 could migrate to 95% ethanol and isopropanol simulants.The findings suggest that the fluorescent whitening agent OB-1 in the foam nets of fruits and vegetables could migrate to non-acidic or oily substances, which might pose a potential threat to human health.