Ultrasound Pretreatment of Apple Slice Prior to Vacuum Freeze Drying

DOI

10.2991/mseee-18.2018.20How to use a DOI?

Keywords

Vacuum freeze; Apple slice; Drying rate.

Abstract

To improve the vacuum freeze drying rate and to reduce the energy consumption of apple slice, apple slice were treated with different ultrasonic frequency, time and temperature. The vacuum freeze drying rate of treated apple slice was determined and, meanwhile, the rehydration ratio of samples with pre-treatment were determined to compare with those of untreated samples. The results indicated that ultrasonic pre-treatment can significantly improve the drying rate of apple slice, and increase the rehydration rate of the dried apple slice. Under a 100 kHz for 5 min at 25°C, the drying rate of pre-treatments is 1.25 times higher compared with that of the control group.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ziying Ren
AU  - Yaxiang Bai
PY  - 2018/08
DA  - 2018/08
TI  - Ultrasound Pretreatment of Apple Slice Prior to Vacuum Freeze Drying
BT  - Proceedings of the 2nd International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2018)
PB  - Atlantis Press
SP  - 112
EP  - 117
SN  - 2352-5401
UR  - https://doi.org/10.2991/mseee-18.2018.20
DO  - 10.2991/mseee-18.2018.20
ID  - Ren2018/08
ER  -