Abstract

Fresh aquatic products are highly perishable after harvest due to their high water content, high protein level, high endogenous enzyme activity, and high growth rates of microorganism. Drying has been proven a successful preservation method for aquatic products by removing water. The conventional sun drying is energy-saving and environment-friendly, but time-consuming and low efficiency. This paper reviews the recent developments in drying technologies for aquatic products including hot-air drying, heat pump drying, infrared radiation drying, freeze drying, microwave drying and hybrid drying methods, with an emphasis of the advantages for different drying techniques to improve the drying efficiency and product quality. Especially, the advances of innovative detection technologies for the drying process monitoring are analyzed and discussed, including near infrared spectroscopy, computer vision system, hyperspectral imaging, low-field nuclear magnetic resonance and magnetic resonance imaging. These analytical techniques can effectively monitor the quality change and improve the drying quality of the aquatic products. Finally, the development trends of drying technologies and monitoring methods for aquatic product in the future are proposed.

摘要

新鲜水产品由于其含水量高、蛋白质含量高、内源酶活性高、微生物生长速度快，在收获后极易腐烂。干燥已被证明是一种成功的去除水分的水产品保存方法。传统的日晒干燥节能环保，但费时、效率低。本文综述了水产品干燥技术的最新发展，包括热风干燥、热泵干燥、红外辐射干燥、冷冻干燥、微波干燥和混合干燥方法，重点介绍了不同干燥技术在改善干燥过程中的优势。效率和产品质量。尤其对干燥过程监控创新检测技术的进展进行了分析和探讨，包括近红外光谱、计算机视觉系统、高光谱成像、低场核磁共振和磁共振成像。这些分析技术可以有效监测质量变化，提高水产品的干燥质量。最后，提出了未来水产品干燥技术和监测方法的发展趋势。