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石墨烯氧化物作为水果皮的抗菌涂层
Piyumi Kodithuwakku1, Dilushan Jayasundara2, Imalka Munaweera1,3
1Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Sri Soratha Mawatha, Nugegoda 10250, Sri Lanka.
ACS omega
|June 24, 2024
概括
开发了一种使用伊尔梅尼特和石墨烯氧化物的新型纳米混合涂层,以应对收获后的食物损失. 这种抗微生物涂层通过抑制微生物腐烂,显著延长水果的保质期.
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:
- 收获后的粮食损失是影响粮食安全的重大全球挑战.
- 开发有效的抗微生物涂层对于延长易腐食品的保质期至关重要.
研究的目的:
- 从天然伊尔梅尼特 (FeTiO3) 和石墨烯氧化物 (GO) 中合成一种新的纳米混合材料.
- 使用这种纳米混合物开发一种抗菌果皮涂层,以减少收获后的损失.
- 评估涂层在延长水果保质期和保持质量的有效性.
主要方法:
- 微波辅助的FeTiO3-GO纳米混合物的绿色合成.
- 将纳米混合物纳入用于水果涂层的酸盐生物聚合物.
- 使用显微镜和光谱 (拉曼,X射线光辐射,红外线) 进行表征.
- 对大肠杆菌的抗微生物活性测试.
- 用电子鼻子和新鲜度指标评估涂层香的保质期.
主要成果:
- 通过显微镜确认了FeTiO3纳米颗粒在GO板上的成功移植.
- 光谱分析显示了FeTiO3和GO之间的相互作用.
- 降低了FeTiO3-GO纳米混合物的光学带间隙.
- 大肠杆菌殖民地数量显著减少.
- 涂层香的保质期翻了一番,其物理化学性质得到了保存.
结论:
- FeTiO3-GO纳米混合物是食品涂料的一个有前途的抗菌剂.
- 这种绿色合成方法提供了一种可持续的方法来减少收获后的食物腐烂.
- 开发的涂层有效地减少了微生物活动,并延长了水果的保质期.
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