环境温度,冰箱的食物负载和门口对基于的温度数据和预测微生物学的保存性能指标的影响
Enrique Martinez-Martinez1, Reynaldo de la Cruz-Quiroz1, Fabian Fagotti2
1Tecnológico de Monterrey, School of Engineering and Sciences, Monterrey, Nuevo León, México.
Journal of food science
|August 2, 2023
概括
冰箱中的变速压缩机可能会损害食品的保存,尽管能效. 这项研究显示,多达54%的胸超过了安全的储存温度,这表明需要提高冰箱性能.
科学领域:
- 食品科学与技术 食品科学与技术
- 制冷工程 制冷工程 制冷工程
- 微生物学 微生物学
背景情况:
- 家庭食品保存受食品类型,冰箱技术,用户行为和环境条件的影响.
- 由于其成分,家禽很容易腐烂,因此成为评估制冷性能的合适模型.
- 现代冰箱优先考虑能效,可能会影响食品保存能力.
研究的目的:
- 开发和应用一个标准化的冰箱性能指标 (RPI) 来评估食品的保存.
- 评估压缩机技术 (单速与变速),环境温度和冰箱负载对家禽保存的影响.
- 为改善冰箱食品保存性能提供定量证据,特别是在节能模型中.
主要方法:
- 胸被存储在一个控制的冰箱抽 (0°C) 中,冰箱设置在5°C.
- 在不同的条件下收集时间温度数据:单速 (SS) 和变速 (VS) 压缩机,低 (LT) 和高 (HT) 环境温度,轻 (RL) 和重 (HL) 制冷箱负载.
- 一个预测性微生物学模型用于Pseudomonas与温度数据一起用于计算正常化的冰箱性能指标 (RPI).
主要成果:
- 高达54%的胸温度超过了推的冷藏储存值.
- 单速压缩机的 RPI 值在 0.61-0.70 (性能优异) 之间.
- 变速压缩机导致RPI范围更广 (0.86-1.14),表明潜在的保存问题,特别是考虑到温度变化 (RPI高达1.16).
结论:
- 针对能源效率优化的可变速度压缩机控制逻辑可能会对食品保存产生负面影响.
- 目前的冰箱设计,特别是那些具有变速压缩机的冰箱设计,需要改进以确保一致的食品安全和质量.
- 开发的RPI方法可应用于各种制冷系统,包括储存,运输和零售展示单元.
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