片的热空气辅助无线电频率干燥:干燥行为和产品质量
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Published on: August 10, 2016
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Mohammed Ismail1, Hatice Neval Özbek1, Fahrettin Göğüş1
1Department of Food Engineering, Engineering Faculty, University of Gaziantep, Gaziantep, Turkey.
Journal of food science
|August 23, 2024
概括
与热空气干燥 (HAD) 相比,热空气辅助射频干燥 (HA-RFD) 显著减少了片的干燥时间. 这种新的HA-RFD方法为高质量干片的高效生产提供了一个有希望的替代方案.
科学领域:
- 食品科学与技术 食品科学与技术
- 农业工程 农业工程
- 干燥技术 干燥技术
背景情况:
- 传统的水果干燥方法,如子切片,往往遭受长时间的加工时间和高能耗.
- 优化干燥技术对于保持干燥产品的营养含量和感官属性至关重要.
- 射频 (RF) 加热提供体积和快速加热,可能提高干燥效率.
研究的目的:
- 为了评估热空气辅助射频干燥 (HA-RFD) 对片的有效性.
- 为了比较HA-RFD加工的片的质量属性与热空气干燥 (HAD) 和冷干燥 (FD) 样品.
- 为了确定高效的HA-RFD的最佳电极距离和切片布局.
主要方法:
- 使用HA-RFD干燥色切片,使用不同的电极距离 (60-80毫米) 和切片数 (1-3).
- 为了最短的干燥时间,确定了最佳条件 (70毫米间隙,3层,12毫米厚度).
- 质量评估包括总含量 (TPC),总黄含量 (TFC),抗氧化活性,颜色和维生素C,比较HA-RFD,HAD和FD方法.
主要成果:
- 与HAD (1170分钟) 相比,HA-RFD减少了67% (390分钟) 的干燥时间.
- 与HAD样本相比,HA-RFD样本显示出更高的TPC,TFC和抗氧化剂活性.
- 冷干燥 (FD) 样本显示TPC,TFC和抗氧化活性最高,但HA-RFD样本与HAD和FD相比颜色变化最小.
结论:
- HA-RFD是HAD的可行和高效替代品,用于生产高质量的干片,可减少干燥时间和良好的生物活性化合物的保留.
- 虽然FD产生的营养含量优越,但HA-RFD在质量,加工时间和能源效率之间提供了实际的平衡.
- 该研究表明HA-RFD作为果物脱水的创新技术的潜力.
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