Optimizing infrared wavelengths in food drying: A comprehensive review of standalone and combined techniques

IF 5.6 1区 农林科学 Q1 FOOD SCIENCE & TECHNOLOGY
Jingxian An , Filicia Wicaksana , Peng Liu , Meng Wai Woo
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引用次数: 0

Abstract

In food processing, infrared drying techniques efficiently remove moisture while preserving quality. Determining the optimal infrared wavelength reduces energy costs and maintains food quality after drying. This review paper summarizes the various wavelengths utilized in infrared drying and explores combined techniques to enhance drying efficiency, reduce drying time, save energy, and maintain food quality. Among infrared drying, far-infrared radiation is the most commonly used for effectively removing moisture and preserving bioactive compounds. However, other infrared wavelengths also have significant applications. For example, near-infrared radiation is prevalent to achieve the Maillard reaction in carbohydrate-rich foods. The combination of mid-infrared (MIR) and far-infrared (FIR) wavelengths, ranging from 2 to 50 μm, covers a broad spectrum of food components, making it a widely used range for infrared drying. In terms of infrared combined techniques, utilizing MIR or FIR in infrared-assisted freeze drying can yield value-added fruit snacks with enhanced crispness. Mid-infrared radiation is sometimes preferred after freeze drying to prevent structural collapse in food products, while near-infrared wavelength (NIR) is favored for expediting drying time, especially for berries. In contrast, infrared-assisted hot air is suitable for seafood, with NIR rarely used due to its potential to deteriorate food quality. This comprehensive review provides researchers with guidance on properly selecting wavelengths for infrared drying and combined techniques.
优化食品干燥中的红外线波长:独立技术和组合技术综合评述
在食品加工过程中,红外线干燥技术能有效去除水分,同时保持食品质量。确定最佳的红外线波长可降低能源成本,并在干燥后保持食品质量。本综述总结了红外线干燥中使用的各种波长,并探讨了提高干燥效率、缩短干燥时间、节约能源和保持食品质量的组合技术。在红外线干燥中,远红外线辐射是最常用的,可有效去除水分和保存生物活性化合物。不过,其他波长的红外线也有重要应用。例如,近红外辐射在富含碳水化合物的食品中普遍用于实现 Maillard 反应。中红外(MIR)和远红外(FIR)波长范围在 2 到 50 μm 之间,覆盖了食品成分的广泛光谱,使其成为红外干燥的广泛应用范围。就红外线组合技术而言,在红外线辅助冷冻干燥中利用中红外辐射或红外辐射可以生产出具有附加值的水果点心,并提高其脆度。在冷冻干燥后,中红外辐射有时更受青睐,以防止食品结构坍塌,而近红外波长(NIR)则更受青睐,可加快干燥时间,尤其是浆果的干燥时间。相比之下,红外线辅助热风适用于海产品,而近红外由于可能会降低食品质量而很少使用。本综述为研究人员正确选择红外干燥波长和组合技术提供了指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Food Control
Food Control 工程技术-食品科技
CiteScore
12.20
自引率
6.70%
发文量
758
审稿时长
33 days
期刊介绍: Food Control is an international journal that provides essential information for those involved in food safety and process control. Food Control covers the below areas that relate to food process control or to food safety of human foods: • Microbial food safety and antimicrobial systems • Mycotoxins • Hazard analysis, HACCP and food safety objectives • Risk assessment, including microbial and chemical hazards • Quality assurance • Good manufacturing practices • Food process systems design and control • Food Packaging technology and materials in contact with foods • Rapid methods of analysis and detection, including sensor technology • Codes of practice, legislation and international harmonization • Consumer issues • Education, training and research needs. The scope of Food Control is comprehensive and includes original research papers, authoritative reviews, short communications, comment articles that report on new developments in food control, and position papers.
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