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<p>To reveal the effects of ultrasound and far-infrared radiation on the drying process of cherry tomato pulp, the ultrasound-enhanced far-infrared radiation drying experiments on cherry tomato pulp were conducted. The effects of different radiation temperatures and ultrasonic powers on drying process, microstructures, moisture states and rheological characteristics were investigated. The results showed that increasing radiation temperature from 120℃ to 180℃ and ultrasonic power from 0&#xa0;W to 60&#xa0;W could shorten drying times by 20–80&#xa0;min, and indicated that higher far-infrared radiation temperatures and ultrasonic powers could significantly promote dehydration process. SEM results illustrated that the application of ultrasound and far-infrared radiation could increase the number of internal micro-pores and expand pore diameter, which was beneficial to moisture removal. LF-NMR results demonstrated that free water continuously decreased during drying process. As the radiation temperature and ultrasonic power increased, the removal and transformation of free water were accelerated. The immobilized water content first increased and then decreased. The rheological experimental results not only revealed that cherry tomato pulp maintained pseudoplastic fluid behavior and elastic characteristics, but also characterized its physical state evolution during drying, which directly affects heat transfer. Apparent viscosity, shear stress, storage modulus, and loss modulus of the samples all increased over time. The application of ultrasound at different power levels significantly enhanced the material’s viscoelastic properties. Therefore, the combined application of ultrasound and far-infrared radiation in cherry tomato pulp drying could effectively promote moisture removal.</p>

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Drying and rheological characteristics of ultrasound-enhanced far-infrared radiation drying on cherry tomato pulp

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • Shubei Dong,
  • Leqian Wang,
  • Xiaoying Chen,
  • Xiaotong Shu,
  • Wenjie Xue,
  • Yunhong Liu

摘要

To reveal the effects of ultrasound and far-infrared radiation on the drying process of cherry tomato pulp, the ultrasound-enhanced far-infrared radiation drying experiments on cherry tomato pulp were conducted. The effects of different radiation temperatures and ultrasonic powers on drying process, microstructures, moisture states and rheological characteristics were investigated. The results showed that increasing radiation temperature from 120℃ to 180℃ and ultrasonic power from 0 W to 60 W could shorten drying times by 20–80 min, and indicated that higher far-infrared radiation temperatures and ultrasonic powers could significantly promote dehydration process. SEM results illustrated that the application of ultrasound and far-infrared radiation could increase the number of internal micro-pores and expand pore diameter, which was beneficial to moisture removal. LF-NMR results demonstrated that free water continuously decreased during drying process. As the radiation temperature and ultrasonic power increased, the removal and transformation of free water were accelerated. The immobilized water content first increased and then decreased. The rheological experimental results not only revealed that cherry tomato pulp maintained pseudoplastic fluid behavior and elastic characteristics, but also characterized its physical state evolution during drying, which directly affects heat transfer. Apparent viscosity, shear stress, storage modulus, and loss modulus of the samples all increased over time. The application of ultrasound at different power levels significantly enhanced the material’s viscoelastic properties. Therefore, the combined application of ultrasound and far-infrared radiation in cherry tomato pulp drying could effectively promote moisture removal.