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This research aims to optimize the drying process and quality properties of eggplant waste using infrared-convective drying techniques.

Optimization of Forced Convective‐Assisted Infrared Drying With Unheated Air for Eggplant Waste: Kinetics, Energy, GHG Emissions, and Quality Properties

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Randomized trial examines drying performance and quality properties of eggplant waste, highlighting environmental sustainability.

This research aims to optimize the drying process and quality properties of eggplant waste using infrared-convective drying techniques.
Evaluated IR power (1000, 1500, 2000 W), sample thickness (2, 4, 6 mm), and UH-air velocity (0.5, 1.25, 2 m/s) to optimize drying performance.
Used response surface methodology for parameter settings and conducted analysis of variance to assess drying characteristics.
Measured effective moisture diffusivity, specific moisture extraction rate, and specific energy consumption during drying.
Effective moisture diffusivity values ranged from 1.046 × 10 −10 to 1.113 × 10 −9 m²/s, with SMER of 0.07–0.24 kg/kWh and SEC of 4.18–14.30 kWh/kg.
Total anthocyanin content increased significantly post-drying, reaching 74.94–290.24 mg CGE.100 g −1 dm.
Optimized parameters were found to be 2000 W IR power, 6 mm sample thickness, and 0.84 m/s UH-air velocity.

Jafari et al. (2026) studied this question.

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View Full Paper

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Authors

Randomized trial examines drying performance and quality properties of eggplant waste, highlighting environmental sustainability.

This research aims to optimize the drying process and quality properties of eggplant waste using infrared-convective drying techniques.
Evaluated IR power (1000, 1500, 2000 W), sample thickness (2, 4, 6 mm), and UH-air velocity (0.5, 1.25, 2 m/s) to optimize drying performance.
Used response surface methodology for parameter settings and conducted analysis of variance to assess drying characteristics.
Measured effective moisture diffusivity, specific moisture extraction rate, and specific energy consumption during drying.
Effective moisture diffusivity values ranged from 1.046 × 10 −10 to 1.113 × 10 −9 m²/s, with SMER of 0.07–0.24 kg/kWh and SEC of 4.18–14.30 kWh/kg.
Total anthocyanin content increased significantly post-drying, reaching 74.94–290.24 mg CGE.100 g −1 dm.
Optimized parameters were found to be 2000 W IR power, 6 mm sample thickness, and 0.84 m/s UH-air velocity.

Jafari et al. (2026) studied this question.

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