开发含有商业橄叶提取物的涂层PLA薄膜,用于食品包装部门
Cecilia Fiorentini1, Giulia Leni1, Elena Díaz de Apodaca2
1Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, 29122 Piacenza, Italy.
Antioxidants (Basel, Switzerland)
|May 25, 2024
概括
含有橄叶提取物的活性多乳酸 (PLA) 薄膜显示出对黄金葡萄球菌 (Staphylococcus aureus) 的显著抗菌活性. 虽然对橄油应用有希望,但对其他食品仿真剂存在迁移问题.
科学领域:
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
- 微生物学 微生物学
背景情况:
- 橄叶提取物 (OL) 对常见的食物传播病原体具有抗微生物特性.
- 开发活性食品包装材料对于提高食品安全和保质期至关重要.
- 聚乳酸 (PLA) 是一种适用于食品包装应用的可生物降解聚合物.
研究的目的:
- 通过将橄叶提取物 (OL) 纳入不同的涂层配方,制造活性聚乳酸 (PLA) 薄膜.
- 评估这些活性薄膜对黄金葡萄球菌的抗菌疗效.
- 使用食品仿真剂评估涂层薄膜的食品接触兼容性和迁移行为.
主要方法:
- 橄叶提取物 (OL) 被纳入甲基纤维素 (MC),酸盐 (CT) 和酸盐 (ALG) 涂层,用于PLA薄膜.
- 对黄金葡萄球菌的抗微生物活性进行了测试,抑制率量化.
- 通过使用食品仿真剂 (10% 乙醇,3% 酸,橄油) 的整体迁移测试来评估与食品接触的兼容性.
- 使用非向代谢学和Oxitest分析来了解成分释放和氧化稳定性.
主要成果:
- 活性PLA薄膜显示出明显的黄金葡萄球菌抑制,MC和CT涂层达到99.7%的抑制.
- 在10%的乙醇和3%的酸模拟剂中,迁移值超过了法定限制.
- 对橄油模拟剂 (D2) 观察到有希望的结果,MC和ALG涂层略微减少了氧化.
- 涂层类型影响了基于食品模拟剂的化合物的选择性释放.
结论:
- 含有橄叶提取物的活性PLA薄膜显示出作为抗菌食品包装的潜力,特别是在以油为基础的食品中.
- 需要进一步调查以解决水性或酸性食品模拟剂中的迁移问题.
- 该研究强调了涂层配方和食品矩阵对活性包装系统性能的影响.
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