富含贝塔的点/凝膜,可实时显示的新鲜度
Diksha Lingait1, Anupama Kumar1
1Department of Chemistry, Visvesvaraya National Institute of Technology, Nagpur 440010, India.
International journal of biological macromolecules
|June 24, 2025
概括
新的pH敏感薄膜由布根维利亚光 (BG) 提取物和pectin-gellan gum (PCT/GG) 制成,可实时监测等易腐烂食品的新鲜度. 这些可生物降解的薄膜会改变颜色,表明腐烂并提高食品安全.
科学领域:
- 食品科学与技术 食品科学与技术
- 生物材料是一种生物材料.
- 分析化学 分析化学
背景情况:
- 对营养丰富的的日益增长的需求需要提高质量控制,因为它们易腐.
- 实时新鲜度监测对于确保食品安全和减少易腐烂商品的浪费至关重要.
- 为食品质量评估开发可持续和具有成本效益的解决方案是一个持续的挑战.
研究的目的:
- 开发新的pH敏感指示膜,用于实时监测易腐烂食品的新鲜度.
- 为了利用可持续和负担得起的生物聚合物 (pectin-gellan gum) 和天然颜料 (布干维利亚 glabra 提取物).
- 评估开发的指示膜的物理,机械,屏障,抗氧化和抗菌性能.
主要方法:
- 使用水从布根维利亚白 (BG) 提取贝塔素颜料.
- 培根 (PCT) - 凝 (GG) 薄膜的制备,其中包含不同度 (10%,30%,50%v/v) 的BG提取物 (PGB薄膜).
- 使用FTIR,SEM,接触角度,水蒸气传递率,机械测试和色度pH响应分析来描述薄膜特性.
主要成果:
- 与对照PG膜相比,PGB膜表现出增强的机械,光屏障,抗氧化和抗菌性能.
- 增加的BG提取物度导致薄膜厚度,水蒸气传递率,接触角度和水分含量发生变化.
- 在PGB片中显示出明显的颜色变化,从粉红色到棕色,以应对与腐败相关的pH值变化.
结论:
- 开发的含有布根维利亚光提取物的膜是有效的pH敏感指标,可实时监测新鲜度.
- 这些可持续和经济可行的指标片可以对像这样的易腐食品的质量控制和消费者安全做出重大贡献.
- PGB片的色度反应为评估易腐商品的保质期提供了一个简单的视觉提示.
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