Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469 Potsdam, Germany.
Laboratory for Biomimetic Membranes and Textiles, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen 9014, Switzerland; Department of Environmental Systems Science, Swiss Federal Institute of Technology, ETH-Zurich, Zurich 8092, Switzerland.
Food Chem. 2024 May 30;441:138276. doi: 10.1016/j.foodchem.2023.138276. Epub 2023 Dec 24.
House crickets are expected to play a significant role in the future food sector. Electrohydrodynamic (EHD) drying offers an environmentally friendly alternative to conventional drying methods. Pulsed electric fields (PEF) is a non-thermal process that facilitates conventional processes. EHD was applied to house crickets with and without PEF pretreatment, and the effect of PEF and EHD on the quality of the insects was evaluated. PEF pretreatment positively affected the oven drying at 60 °C by reducing its duration and thus decreasing the energy consumption by 14.22%. Moisture removal of EHD was not sufficient to replace oven drying, but when combined with oven drying, the overall energy consumption was reduced by >50%. PEF processing also increased the protein solubility (53.07% higher than the respective control) and antioxidant activity (24.05% higher than the respective control) of the oven-dried samples and reduced the histamine content of the EHD-dried samples (25.87% lower than the respective control).
家蟋蟀有望在未来的食品领域发挥重要作用。静电场（EHD）干燥为传统干燥方法提供了一种环保的替代方案。脉冲电场（PEF）是一种非热加工过程，可促进传统工艺。对有和没有 PEF 预处理的家蟋蟀进行了 EHD 处理，并评估了 PEF 和 EHD 对昆虫质量的影响。PEF 预处理通过减少 60°C 烤箱干燥的时间，从而将能耗降低 14.22%，对 60°C 烤箱干燥有积极影响。EHD 的水分去除不足以替代烤箱干燥，但与烤箱干燥相结合时，总能耗降低了>50%。PEF 处理还提高了烤箱干燥样品的蛋白质溶解度（比相应的对照高 53.07%）和抗氧化活性（比相应的对照高 24.05%），并降低了 EHD 干燥样品中的组胺含量（比相应的对照低 25.87%）。
