关于改善自然来源的pH敏感指示膜的灵敏度和色彩稳定性的审查
Chang Guo1, Ying Li1, Hao Zhang1
1College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China.
Comprehensive reviews in food science and food safety
|July 20, 2024
概括
自然来源的pH敏感指示膜提供安全的实时食品新鲜度监测. 提高色素的稳定性和灵敏性是开发可靠的天然pH指标的关键,用于食品安全应用.
科学领域:
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 自然来源的pH敏感指示膜对于安全的实时食品新鲜度监测至关重要.
- 天然颜料 (素,贝他林,黄素,阿利扎林,希科宁) 是常用的,但面临着稳定性挑战.
- 环境因素显著影响着色素的稳定性,影响指示膜的灵敏度和颜色.
研究的目的:
- 审查pH敏感指示膜的天然颜料.
- 描述颜色变化机制和在食品新鲜度监测中的应用.
- 分析影响色素稳定性和敏感性的因素.
主要方法:
- 在pH敏感膜中使用的常见天然颜料的呈现.
- 在pH范围内的颜料颜色变化机制的描述.
- 对影响稳定的环境因素 (光,温度,湿度,氧气) 的分析.
主要成果:
- 封装,疏水矩阵和保护层增强了颜色的稳定性.
- 副色素,金属离子,色素混合和电可以提高颜色灵敏度.
- 确定了影响指示膜颜料性能的关键因素.
结论:
- 研究了改善自然pH敏感指示膜的稳定性和灵敏性的方法.
- 本综述为开发先进的食品新鲜度监测系统提供了理论支持.
- 增强自然指标电影有助于食品安全和质量评估的进展.
相关概念视频
02:39Indicators
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are called...
01:14Photoluminescence: Applications
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...