在现场多重交联的细菌纤维素具有增强的机械和屏障特性,用于抗微生物食品接触包装
相关实验视频
Updated: Jan 30, 2026

04:42
Bacterial Cellulose Spheres that Encapsulate Solid Materials
Published on: February 26, 2021
5.0K
Weimin Xing1, Wenyan Liu2, Bei Yang3
1School of Materials Science and Engineering, Hainan University, 58 Renmin Road, Haikou, 570228, Hainan Province, China.
International journal of biological macromolecules
|January 28, 2026
概括
开发了具有增强强度和屏障性能的可生物降解细菌纤维素复合膜. 这些新型食品包装材料可以提高食品安全性,并延长猪肉等产品的保质期.
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
- 生物技术是生物技术.
背景情况:
- 传统的不可生物降解的塑料包装对环境和食品安全构成风险.
- 可生物降解和可食用的多糖基材料,如细菌纤维素 (BC),是食品包装有希望的替代品.
- 提高BC膜的性能对于其在食品包装中的实际应用至关重要.
研究的目的:
- 使用细菌纤维素复合材料开发高性能,可生物降解和与食品接触安全的包装膜.
- 提高BC膜的机械强度,屏障性能和抗菌活性.
- 调查基于BC的复合膜在现场多重交联策略的有效性.
主要方法:
- 合成的两性酸衍生物 (SA-PBA).
- 在细菌纤维素 (BC) 生物合成过程中纳入尼和SA-PBA.
- 在BC薄膜收获后应用了随后的Ca2+交叉链接步骤.
主要成果:
- 与纯BC薄膜相比,BC/Nisin/SA-PBA复合膜的抗拉强度增加了3.08倍,破裂时延伸度增加了37.51倍.
- 氧气传导率 (OTR) 和水蒸气透率 (WVP) 分别下降了98.11%和80.93%.
- 复合膜对黄金葡萄球菌具有显著的抗菌活性,并将猪肉的保质期延长到10天,减少了TVB-N和TVC.
结论:
- 在现场的多重交联策略有效地增强了基于BC的复合膜的性能.
- 开发的BC/Nisin/SA-PBA薄膜适用于可生物降解和食品安全的包装应用.
- 这些先进的包装材料显示出保护食品质量和延长保质期的潜力.
相关概念视频
DNA Packaging
112.4K
Overview
112.4K
Chromatin Packaging
19.2K
Each human somatic cell contains 6 billion base pairs of DNA. Each base pair is 0.34 nm long, meaning each diploid cell contains a staggering 2 meters of DNA. This long DNA strand is packed inside a nucleus measuring only 10-20 microns in diameter with the help of specialized DNA-binding proteins called histones. Together they form a compact DNA-protein complex called chromatin. The chromatin is further compacted into higher-order structures. The highest level of compaction is achieved during...
19.2K
Chromatin Packaging
22.1K
Each human somatic cell contains 6 billion base-pairs of DNA. Each base-pair is 0.34 nm long, which means that each diploid cell contains a staggering 2 meters of DNA. How is such a long DNA strand packed inside a nucleus measuring only 10 - 20 microns in diameter?
The chromatin
In combination with specialized DNA binding protein called Histones, the DNA double helix forms a compact DNA: protein complex called chromatin. The chromatin itself is further compacted into higher-order...
The chromatin
In combination with specialized DNA binding protein called Histones, the DNA double helix forms a compact DNA: protein complex called chromatin. The chromatin itself is further compacted into higher-order...
22.1K
Chromatin Packaging
9.7K
9.7K
Antimicrobial Effectiveness
989
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
989
Cellulose and Pectic Polysaccharides
4.9K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
4.9K

