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以环保塑料材料和纳米TiO₂为基础的乙烯清理膜:制备,表征和体内评估

Alba Maldonado^1,2, Tomas Aguilar^1,2, Carolin Hauser³

¹Packaging Innovation Center (LABEN-Chile), Universidad de Santiago de Chile, Obispo Umaña 050, Santiago 9170201, Chile.

|March 28, 2024

概括

在生物降解膜中加入的二氧化 (TiO2) 纳米粒子有效地去除乙烯气体,在储存期间保持水果的质量. 使用5%TiO2的聚乳酸 (PLA) 薄膜显示出最佳的乙烯去除和水果保存结果.

科学领域:

材料科学材料科学材料科学
食品科学食品科学食品科学
化学工程是化学工程的重要组成部分.

背景情况:

乙烯气加速水果的成熟和储存期间的腐败.
二氧化 (TiO2) 纳米粒子表现出用于气体去除的光催化特性.

研究的目的:

开发含有TiO2纳米粒子的可生物降解薄膜.
评估这些薄膜的乙烯去除能力.
评估它们在延长香保质期中的应用.

主要方法:

使用5%和10%的TiO2通过挤出制造Mater-Bi (MB) 和聚乳酸 (PLA) 薄膜.
薄膜特性 (结构,形态,热,动态,屏障,机械) 的表征.
使用气体染色学和体内香储存研究来量化乙烯去除.

主要成果:

与MB片相比,PLA片与纳米-TiO2的相互作用和分散性更好.
聚乙烯薄膜,特别是5%的TiO2,表现出优越的乙烯去除能力.
在体内研究证实,5%的TiO2薄膜在储存10天后保持了香的质量.

结论:

含有TiO2纳米颗粒的生物降解薄膜是有效的乙烯清洁剂.
含有5%TiO2的PLA基薄膜为水果保存提供了一个有前途的解决方案.
增强TiO2的薄膜是延长新鲜农产品的保质期的可行替代方案.

关键词:

环保的电影环保的电影乙烯去除剂乙烯去除剂保质期货架使用寿命二氧化二氧化的使用方法

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