一项关于厚度,红外线强度和空气流如何影响果片的干燥动力学,建模,激活能量和使用红外线干燥器的质量属性的研究
Hany S El-Mesery1,2, Zicheng Hu1, Kwami Ashiagbor3
1School of Energy and Power Engineering, Jiangsu University, Zhenjiang, China.
Journal of food science
|April 5, 2024
概括
红外干燥的果显著减少了干燥时间与更高的强度和较低的空气流. 较薄的果片和优化的条件产生最快的脱水,影响水的活动,收缩和颜色.
科学领域:
- 食品科学 食品科学 食品科学
- 农业工程 农业工程
- 材料科学 材料科学 材料科学
背景情况:
- 干燥对于食品的保存至关重要,减少储存需求和延长保质期.
- 红外 (IR) 干燥为干燥果等农产品提供了一种有效的方法.
- 优化红外干燥参数对于实现所需的产品质量和工艺效率至关重要.
研究的目的:
- 为了研究红外干燥条件对果片的影响.
- 为了确定快速有效的果脱水的最佳参数.
- 分析干燥对果质量属性和质量转移的影响.
主要方法:
- 不同厚度的果片 (2,4,6毫米) 用红外干燥机干燥.
- 干燥实验在不同的红外强度 (0.1300.341 W/cm2) 和空气流速 (0.51.5 m/s) 下进行.
- 测量了关键参数,包括干燥时间,水活性,收缩,补水比,颜色变化和有效扩散率.
主要成果:
- 干燥时间随着IR强度的增加而减少,随着空气流量的增加而减少.
- 最短的干燥时间 (190分钟) 是通过2毫米切片在0.341W/cm2和0.5m/s的空气流量实现的.
- 增加切片厚度显著延长了干燥时间;更高的IR强度增加了收缩,而更高的气流减少了它. 颜色变化主要受到切片厚度的影响.
- 有效的扩散率在2.6到9.0×10−10 m2/s之间,干燥曲线最好由Midilli等人建模. 一个模型.模型.
结论:
- 优化的红外干燥参数可以显著减少果脱水时间.
- 切片厚度,IR强度和空气流量是影响干燥动力学和果质量的关键因素.
- 在Midilli等人. 该模型准确地描述了果片的红外干燥行为.
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