从在恒定条件下的代数初级生存模型中推导微生物无活化率方程
Si Zhu1, Bing Li1, Guibing Chen1
1Center for Excellence in Post-Harvest Technologies, North Carolina A&T State University, The North Carolina Research Campus, 500 Laureate Way, Kannapolis, NC 28081, USA.
Foods (Basel, Switzerland)
|June 13, 2025
概括
了解食品加工中的微生物无活化需要分析该系统.
科学领域:
- 食品科学与技术 食品科学与技术
- 微生物学 微生物学
- 化学工程是化学工程的组成部分.
背景情况:
- 食品加工涉及微生物无活化使用热和非热剂.
- 系统状态由微生物度,食物矩阵特性和致命剂强度来定义.
- 过程路径描述了状态因子随时间变化的变化.
研究的目的:
- 为了研究工艺路径对微生物无活化速率方程的影响.
- 为了确定是否可以导出独特的失活率方程.
- 用实验性微生物生存数据验证理论模型.
主要方法:
- 将微生物无活化的建模作为具有定义状态因子的系统.
- 使用韦布尔模型来分析无活化动力学.
- 比较无活化率依赖过程路径与路径独立性.
主要成果:
- 如果失活率取决于路径,那么无限速率方程可以产生相同的初级模型.
- 这种路径依赖理论上阻止了识别真正的速率方程.
- 当速率独立于路径时,可以单独导出失活率方程.
结论:
- 大多数微生物生存数据表明,无活化率独立于过程路径.
- 路径独立性允许单独导出失活率方程.
- 这一发现简化了对食品杀菌和消毒过程的理解和建模.
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