银纳米颗粒的绿色合成使用桃糖多糖为增强基于多糖的片性能
Yadong Zhu1, Xiaohui Pang1, Wenlin Zhang1
1College of Biological Science & Biotechnology, Beijing Key Laboratory of Forest Food Processing and Safety, Beijing Forestry University, Beijing 100083, China.
Food research international (Ottawa, Ont.)
|April 19, 2025
概括
这项研究开发了一种基于多糖的新薄膜,使用桃多糖 (PPE) 和银纳米粒子 (AgNPs) 来增强食品的保存. 由此产生的SA-PPE-AgNPs膜有效地保持了水果的新鲜度,并延长了保质期.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 食品科学 食品科学 食品科学
背景情况:
- 传统的食品包装材料往往缺乏高级功能.
- 开发可持续和有效的抗微生物包装对于减少食物浪费至关重要.
- 银纳米粒子 (AgNPs) 具有强大的抗菌特性.
研究的目的:
- 合成银纳米颗粒使用桃多糖提取物 (PPE) 作为绿色的减少和稳定剂.
- 开发一种基于藻酸盐 (SA) 的新型复合膜,将这些PPE-AgNP结合起来.
- 评估SA-PPE-AgNPs膜的物理,机械,屏障和抗菌性能,用于食品保存.
主要方法:
- 使用个人防护设备进行AgNP的绿色合成.
- AgNPs的表征 (晶体结构,粒子大小).
- 制造SA-PPE-AgNPs复合薄膜. 这是一个很好的方法.
- 评价薄膜的特性 (拉力强度,破裂时的延长,水蒸气的透性,紫外线屏障).
- 对各种微生物的抗微生物活性评估.
- 该薄膜作为糖的涂层的应用.
主要成果:
- PPE成功合成了面部中心立方结构的AgNP (55.88纳米平均尺寸).
- SA-PPE-AgNPs薄膜表现出增强的抗拉强度 (18.24 MPa),破裂时的延长 (21.94%),以及降低的水蒸气透度 (4.91 × 10−11 g·m−1·s−1·Pa−1).
- 片显示出对大肠杆菌,黄金杆菌,大脑菌和黑色杆菌有显著的抗菌活性.
- 用SA-PPE-AgNPs涂覆糖果显著减缓了体重减轻,保持了坚硬性,并在储存期间保持了维生素C含量.
结论:
- SA-PPE-AgNPs薄膜是一种有前途的可持续包装材料,具有出色的抗微生物和屏障性能.
- 这种复合膜有效地延长了诸如糖子之类的水果的保质期.
- 该研究强调了植物性多糖和AgNP在开发先进食品包装解决方案方面的潜力.
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