Effect of different drying conditions on characteristics of powder density and adsorption of dried coriandrum

Document Type : Research Paper

Author

Scientific member/Department of Mechanics of Biosystems Engineering, Faculty of Crop Engineering, Sari University of Agricultural Sciences and Natural Resources

Abstract

Effects of temperatures (35, 45 and 55ºC), drying air rate (0.008, 0.016 and 0.024 m3 s-1) and with or without using heat pump in a solar dryer were investigated on adsorption percent, packed mass density and loosed mass density in a factorial test based on completely randomized design at three replications. Also, the results were compared with the traditional drying method. Results indicated that temperature, air rate, using heat pump and the interactions had significant effect (p<0.01) on adsorption percent of dried coriander samples and powder density. Also, the dried samples in heat-pump assisted solar dryer had better quality in comparison with the traditional dryer. The temperature of 55 ºC and air rate of 0.024 m3 s-1 resulted in better quality of the crop and it can be recommended as the best treatments for dried coriander.

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References

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Iranian Journal of Biosystems Engineering
Volume 48, Issue 2
July 2017
Pages 191-199

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History

  • Receive Date: 07 May 2016
  • Revise Date: 18 December 2016
  • Accept Date: 15 January 2017

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