包装材料的化学处理,以延长新鲜产品的保质期
Belal Abu Salha1, Ilana Perelshtein1, Aharon Gedanken1
1Department of Chemistry, and the BINA center, Bar-Ilan University, Ramat-Gan, 5290002, Israel.
Heliyon
|November 2, 2023
概括
聚乙烯 (PE) 包装袋被涂上素 (CS) 纳米颗粒,使用声化学. 这些增强的CS NP涂层PE袋通过抑制细菌生长,显著延长了新鲜农产品的保质期.
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:
- 聚乙烯 (PE) 包装广泛使用,但缺乏固有的抗菌特性.
- 延长新鲜农产品的保质期对于减少食物浪费和改善粮食安全至关重要.
- 酸盐 (CS) 是一种天然的生物聚合物,具有已知的抗菌特性.
研究的目的:
- 开发带有可食用的奇托纳米颗粒 (CSNP) 的带有声化学涂层的PE包装袋.
- 评估CS NP涂层PE袋在延长新鲜产品的保质期方面的有效性.
- 评估修改后的包装材料的抗菌活性.
主要方法:
- 在PE包装袋表面上使用乙烯酸基托溶液的CSNP的声化学沉积.
- 对CSNP和涂层PE袋的物理化学表征.
- 通过监测质量损失,总可溶固体,pH值和视觉变化来评估新鲜产品 (黄瓜,,大) 的保质期.
- 评估涂层PE袋对各种细菌物种的抗菌活性.
主要成果:
- 成功地将PE袋与CSNP进行声化学涂层.
- 与未涂层的对照组相比,涂层PE袋的新鲜度明显长.
- 对产品的监测表明,CS NP涂层PE袋有效延长了保质期.
- 经过修改的PE袋对测试的细菌物种表现出显著的抗菌活性.
结论:
- 带有CS NP的超声化学涂层PE袋是延长新鲜产品保质期的有希望的解决方案.
- CS NPs的抗菌特性有助于提高包装食品的保存.
- 这种基于纳米技术的方法为改善食品包装提供了一种可持续的方法.
相关概念视频
01:30Methods of Sterilization II: Chemical Methods
6.4K
In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
6.4K
01:27Chemical Agents for Microbial Control
35
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
35
01:27Microorganisms in Agriculture and Food industry
43
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
43
01:20Radical Autoxidation
2.2K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
2.2K