用于保存梨的奇托/环极/TiO2-NPs复合物的制造和表征
Thi Lan Pham1,2, Manh B Nguyen3, Van Cuong Bui1
1Institute for Tropical Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam ptlan@itt.vast.vn.
RSC advances
|August 19, 2024
概括
这项研究合成了酸盐-环氧化/二氧化纳米粒子 (CS-CD/TiO2NPs) 膜,提高了食品的保存. 这些膜具有显著的抗菌活性,并将梨的保质期延长7天.
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
- 纳米技术 纳米技术
背景情况:
- 聚合物薄膜对于食品保存至关重要,但往往缺乏足够的机械和抗菌性能.
- 二氧化 (TiO2) 纳米粒子为增强聚合物薄膜功能提供了潜力.
- 奇托和环极是具有薄膜形成能力的生物相容聚合物.
研究的目的:
- 为了合成和描述CS-CD/TiO2NPs电影.
- 评估TiO2纳米颗粒含量对薄膜特性和食品保存效果的影响.
- 评估开发的薄膜的抗菌活性和梨保存能力.
主要方法:
- 微波辅助的TiO2纳米颗粒 (10-20nm,109 m2/g表面积) 的热水合成.
- 合成酸盐-环氧化/TiO2纳米粒子 (CS-CD/TiO2NPs) 复合膜的制造.
- 机械性质的评估,对大肠杆菌和黄金杆菌的抗菌活性,以及在受控条件下 (30°C,80%RH) 保存梨的评估.
主要成果:
- CS-CD/TiO2NPs膜显示了显著改善的机械性能和强大的抗菌活性 (>99.5%有效率在15分钟内).
- TiO2纳米粒子含量影响了拉伸强度,抗菌活性,成熟率,乙烯生产和水蒸气透性.
- 使用CS-CD/TiO2NPs薄膜保存梨,可延长7天的保质期,保持感官属性,减少体重减轻,并保持硬度.
结论:
- CS-CD/TiO2NPs复合膜是改善食品保存的一种有希望的方法.
- 开发的薄膜提供了有效的抗菌保护,并延长了梨等易腐烂产品的保质期.
- 优化的TiO2纳米粒子集成可以为特定的食品包装应用量身定制薄膜特性.
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