用纳米纤维素和Amaranthus viridis提取物米粉的生物降解活性薄膜的开发和表征
Jocilane Pereira de Oliveira1, Vanderlúcio de Souza Moreira2, Jéssica Santos de Oliveira1
1Graduate Program in Food Engineering and Science, State University of Bahia, Itapetinga, BA 45700-000, Brazil.
International journal of biological macromolecules
|June 15, 2025
概括
这项研究用Amaranthus viridis提取物增强了粉和纳米纤维素膜,提高了结构密度,机械强度和抗氧化活性. 由此产生的可生物降解薄膜显示出积极食品包装应用的前景.
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
- 聚合物科学 聚合物科学
背景情况:
- 活跃和可生物降解的包装对于食品的保存和可持续性至关重要.
- 开发具有增强性能的新型包装材料是一个正在进行的研究领域.
- 亚马兰 (Amaranthus viridis) 提取物具有抗氧化特性,在食品包装中具有潜在的应用.
研究的目的:
- 为了研究Amaranthus viridis (AV) 提取物在粉 (RS) 和纳米纤维素 (CNF) 复合膜的物理化学,机械和抗氧化性能上的作用.
- 评估AV提取物的最佳度,以提高电影的性能.
- 评估开发的复合膜的生物降解性.
主要方法:
- 复合膜是使用米粉 (RS) 和纳米纤维素 (CNF) 制备的,其中含有不同度的阿玛兰 (Amaranthus viridis) 提取物 (5%,7.5%,10%).
- 分析了物理化学性质 (结构密度,可溶性,水容量,厚度).
- 机械性能 (拉力强度,破裂时的延长) 进行了评估.
- 使用FRAP,,ABTS和DPPH试验来评估抗氧化活性.
- 生物降解性通过土壤暴露测试来确定.
主要成果:
- 加入AV提取物增加了结构密度和热稳定性,最佳效果是在10%的AV.
- 薄膜厚度下降,而水溶性随着AV含量增加而增加.
- 拉力强度和断裂时的延伸度有所改善,这表明机械性能和灵活性有所提高.
- 抗氧化剂活性随着AV度的增加而显著增加,显示出强大的自由基清除能力.
- 所有薄膜配方均表现出优异的生物降解性,在15天后,质量损失超过80%.
结论:
- 亚马兰 (Amaranthus viridis) 提取物有效地增强RS-CNF复合膜的结构,机械和抗氧化性能.
- 10%的AV度产生了最显著的改进,突出了其积极包装的潜力.
- 这些增强的可生物降解薄膜为食品包装行业提供了一个有希望的可持续解决方案.
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