Optimization of Process Parameters for Microwave – Convective Drying of Grapes Using Response Surface Method

6 Pages Posted: 12 Feb 2018

See all articles by Parag P. Zade

Parag P. Zade

Pimpri-Chinchwad College of Engineering

Sanjay S. Lakade

Pimpri-Chinchwad College of Engineering

Date Written: December 21, 2017

Abstract

Drying is a key method to preserve agricultural food products. The longer drying time in many conventional drying methods at relatively elevated temperature during the falling rate periods leads to undesirable degradation of the finished products. Microwave drying shortens the drying time drastically and improves the desirable sensory quality of final product. In This study combination of convective hot air drying and microwave heating was applied to produce raisins from grapes in short time duration with desirable quality aspects. The influence of drying parameters such as specific microwave power, hot air temperature and their interaction were analyzed using response surface method. This research work was carried out by doing experiments in laboratory drying setup and optimal combination was determined as 45°C hot air temperature and specific microwave power as 0.25 W/g to obtain results in less than 8 hours to constraint the process for mass production in single industrial working shift. Optimal conditions obtained from lab scale setup were used on continuous conveyor drying setup to confirm the results for mass production.

Keywords: Drying, Response Surface Method (RSM), Microwaves, Hot Air, Grapes

Suggested Citation

Zade, Parag P. and Lakade, Sanjay S., Optimization of Process Parameters for Microwave – Convective Drying of Grapes Using Response Surface Method (December 21, 2017). International Conference on Advances in Thermal Systems, Materials and Design Engineering (ATSMDE2017). Available at SSRN: https://ssrn.com/abstract=3101687 or http://dx.doi.org/10.2139/ssrn.3101687

Parag P. Zade (Contact Author)

Pimpri-Chinchwad College of Engineering ( email )

Nigdi, Pune
Maharashtra
411044
India

Sanjay S. Lakade

Pimpri-Chinchwad College of Engineering

Nigdi, Pune
Maharashtra
411044
India

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