中国塑料 ›› 2025, Vol. 39 ›› Issue (5): 83-87.DOI: 10.19491/j.issn.1001-9278.2025.05.013

• 标准与测试 • 上一篇    下一篇

食品包装用聚丙烯中抗氧剂的迁移行为

胡法()   

  1. 中石化(北京)化工研究院有限公司,北京 100013
  • 收稿日期:2025-02-16 出版日期:2025-05-26 发布日期:2025-05-22
  • 作者简介:胡法(1986—),男,副研究员,从事高分子材料的性能评价研究,huf.bjhy@sinopec.com

Migration behavior of antioxidants in polypropylene used for food packaging

HU Fa()   

  1. Sinopec (Beijing) Research Institute of Chemical Industry Co,Ltd,Beijing 100013,China
  • Received:2025-02-16 Online:2025-05-26 Published:2025-05-22

摘要:

分别制备抗氧剂1010和抗氧剂627A的聚丙烯薄膜,通过微波萃取及液相色谱测定聚丙烯薄膜中的抗氧剂的含量,并通过8种不同的食品模拟物模拟水性食品(pH>4.5)、酸性食品(pH≤4.5)、酒精类食品(4种浓度)、脂肪类食品(2种),在3种不同温度和5种不同时间下抗氧剂向食品模拟物的迁移情况。结果表明,2种抗氧剂向为水、3 %(质量分数)乙酸和10 %(体积分数)乙醇3种模拟物中迁移均低于检出限,当模拟物为正己烷时,2种抗氧剂均能够较快地达到最大迁移量。抗氧剂 1010与聚丙烯(PP)分子间较强的相互作用,与PP基体结合较好,整体迁移量较小,甚至在40 ℃以下酒精类食品中不发生迁移,且在高浓度酒精类食品和脂肪类食品中迁移量明显低于抗氧剂627A。

关键词: 食品包装, 聚丙烯, 抗氧剂1010, 抗氧剂627A, 迁移

Abstract:

A series of polypropylene (PP) films containing antioxidant 1010 and antioxidant 627A were separately prepared. The antioxidant content of the films was determined by microwave extraction and liquid chromatography. Eight different food simulants were employed to simulate water⁃based foods (pH>4.5), acidic foods (pH≤4.5), alcoholic foods, and fatty foods. The migration of antioxidants to food simulants was investigated at three different temperatures and five different times. The results indicated that the migration levels of the two antioxidants to water, 3 wt% acetic acid, and 10 vt% ethanol as three simulated substances were below the detection limit. When the simulated substance was n⁃hexane, both antioxidants could reach the maximum migration amount quickly. Antioxidant 1010 has a strong interaction with PP molecules to bind well with the matrix. Its overall migration was relatively small did not migrate even in alcoholic foods below 40 ℃. Moreover, its migration in the high⁃concentration alcoholic and fatty foods was significantly lower than that of antioxidant 627A.

Key words: food packaging, polypropylene, antioxidant 1010, antioxidant 627A, migration

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