Effects of tray drying, vacuum infrared drying, and vacuum microwave drying techniques on quality characteristics and aroma profile of orange peels

Hamza Bozkir; Yeliz Tekgül; Edibe Seda Erten

doi:10.1111/jfpe.13611

journal article Dec 01, 2020

Effects of tray drying, vacuum infrared drying, and vacuum microwave drying techniques on quality characteristics and aroma profile of orange peels

Hamza Bozkir

Yeliz Tekgül

Edibe Seda Erten

Journal of Food Process Engineering Vol. 44 No. 1 · Wiley

View at Publisher Save 10.1111/jfpe.13611

Abstract

AbstractThis study aimed to dry orange peels using tray drying (TD), vacuum infrared drying (VID), and vacuum microwave drying (VMD) techniques and to investigate the effects of different drying techniques on the drying kinetics, physical, chemical characteristics, and volatile compounds. The VMD raised the drying rate and the effective water diffusivity compared to the TD and the VID. It was detected that the TD, VID, and VMD at 50°C required 300, 106, and 20.67 min, respectively. The VMD showed the highest vitamin C, total phenolic substance, total carotenoid content, whereas the TD indicated the lowest color values. A total of 63 volatile compounds which consist of 16 aldehydes and ketones, 4 esters, 34 terpenes, and 9 other types of compounds were determined in dried orange peels. It was determined that the VID technique caused the least destructing in volatile compounds, whereas the TD technique was the most destructive.Practical ApplicationsDrying is a common preservation method used for the long‐term durability of foods. Drying of orange peel conduces not only to decrease environmental problems but also to provide economic benefits. Dried orange peel is used in herbal teas and food products because it is rich in aromatic flavor and odor components. Orange peel was dried using tray drying, vacuum infrared drying, and vacuum microwave drying. The vacuum microwave drying increased the drying rate and effective water diffusivity to others. The vacuum microwave drying and vacuum infrared drying protected quality characteristics, and volatile compounds of orange peels. This study demonstrated that the waste orange peels could be dried with different drying methods and converted into products with high nutritional components.

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Details

Published: Dec 01, 2020
Vol/Issue: 44(1)
License: View

Authors

H

Hamza Bozkir

Food Processing Department, Pamukova Vocational School Sakarya University of Applied Sciences Sakarya Turkey

Y

Yeliz Tekgül

Food Processing Department, Kösk Vocational School Aydın Adnan Menderes University Aydın Turkey

E

Edibe Seda Erten

Faculty of Engineering, Department of Food Engineering Aydın Adnan Menderes University Aydın Turkey

Cite This Article

Hamza Bozkir, Yeliz Tekgül, Edibe Seda Erten (2020). Effects of tray drying, vacuum infrared drying, and vacuum microwave drying techniques on quality characteristics and aroma profile of orange peels. Journal of Food Process Engineering, 44(1). https://doi.org/10.1111/jfpe.13611

Effects of tray drying, vacuum infrared drying, and vacuum microwave drying techniques on quality characteristics and aroma profile of orange peels

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