Effects of ultrasonic pre-treatment on the porosity, shrinkage behaviors, and heat pump drying kinetics of scallop adductors considering shrinkage correction

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 61, P. 104900 - 104900

Published: July 29, 2024

Shrinkage has a negative impact on drying efficiency and quality. However, insufficient information about the effect of shrinkage kinetics hampers comprehension underlying mechanism. This study aims to investigate effects ultrasonic (US) pre-treatment conditions volume ratio (VR), apparent density, porosity, as well with without correction scallop adductors during heat pump drying. The VR density decreased, while porosity increased higher temperatures longer times. US resulted in decreased but enhanced demonstrating effective role alleviating promoting pore formation Ignoring phenomenon caused weak underestimation significant overestimation moisture diffusivity coefficient. Therefore, must be considered properly comprehend behaviors. mechanism was closely related glass transition theory. critical at which samples underwent by 15 % comparison control. US-pretreated could achieve glassy state more quickly than control under same conditions, leading reduced volumetric shrinkage.

Language: Английский

Effect of moisture migration on texture and viscoelasticity of Chinese yam during multi-phase microwave drying (MMD) - focusing on the evaporation-dehydration stage

Food Chemistry X, Journal Year: 2025, Volume and Issue: 26, P. 102314 - 102314

Published: Feb. 1, 2025

This study aimed to assess the correlation between moisture migration and texture, as well viscoelasticity of Chinese yam during evaporation stage multiphase microwave drying (MMD). A comparison different strategies (Scheme I, Scheme II, III) revealed that water molecule mobility decreased proceeded. In samples with higher content at transition point, rapid could result in a more pronounced collapse cellular pore structure, leading denser product increased hardness. Additionally, changes samples' textural viscoelastic properties were significantly correlated states. As decreased, movement molecular chains was restricted, rigidity sample. These findings can provide theoretical guidance for process optimization MMD meet consumers' demand high-quality dried products.

Language: Английский

Drying characteristics and quality attributes of heat pump dried scallop adductors: Effect of different ethanol pretreatment time

Drying Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 13

Published: April 5, 2025

Language: Английский