18 / 06 / 2018

Elea PEF expert publishes paper on onion drying

Elea’s PEF expert Robin Ostermeier publishes paper on ‘Influence of pulsed electric field (PEF) pre-treatment on the convective drying kinetics of onions’.

The paper was released together with researchers including P. Giersemehl, C. Siemer, S. Töpfl and H. Jaeger (BOKU, Austria) in the Journal of Food Engineering, Volume 237, November 2018, Pages 110-117.

Link to paper at Elsevier

Abstract:

This work discusses the effect of pulsed electric field (PEF) parameters on the convective drying process of fresh onions.

First, the PEF treatment parameters and their influence on the cell disruption were investigated by applying various PEF settings (W = 0.2–20.0 kJ/kg, E = 0.36–1.07 kV/cm). The diffusion coefficient De was calculated and mathematic modelling was conducted.

PEF was found to enhance the internal diffusion, but not necessarily to result in an increased drying rate. The shortest drying time at a drying temperature of 60 °C was achieved for onion samples treated at 4 kJ/kg and 1.07 kV/cm.

Subsequent drying trials were performed at the pre-determined PEF settings and different drying temperatures resulting in a PEF related drying time reduction of 30.3%, 21.4% and 6.4% at 45 °C, 60 °C and 75 °C to reach a residual moisture (Mr) of 7%, respectively.

Contact us

Prof.-von-Klitzing-Str. 9,
D-49610 Quakenbrück
Germany

Follow us on

Sign up for our newsletter

Share
Tweet
Impressum Privacy policy

Address
Elea Vertriebs- und Vermarktungsgesellschaft
Prof.-von-Klitzing-Str. 9
D – 49610 Quakenbrück

Telefon: +49 (0) 5431 92629 70
E-Mail: info@elea-technology.com

Managing Director
Stefan Töpfl (Prof. Dr.)
E-Mail: s.toepfl@elea-technology.com

Commercial Register
HRB 206480 Amtsgericht Osnabrück
VAT No.: DE 285 421 329

Concept, Design & Images
Richard, Chant Design Ltd

Web Development
Three Straight Lines Limited,
Platinum Business Centre,
23 Hinton Road, Bournemouth, BH1 2EF
www.threestraightlines.co.uk

Limitation of Liability

Great care has been taken in the preparation of the content of this Website . Notwithstanding the provider accepts no liability for the accuracy or completeness of the available content. The use of the contents of the Website is at the sole risk of the User.

Copyright and Related Rights

The content published on this Website is subject to German Copyright and Related Rights ( Urheber- und Leistungsschutzrecht ). Any use of German Copyright or Related Rights ( Urheber- und Leistungsschutzrecht ) requires the prior written permission of the provider or rights owner. This applies in particular to reproduction, editing, translation, downloading, or processing e.g.

reproduction of the contents in databanks or other electronic media and systems. This applies also to the contents and rights of third parties . Unauthorised duplication or reproduction of individual or complete content is not permitted and is punishable by law. Production of copies and downloads for personal, private and non-commercial use is allowed.

Get the latest news from Elea

Sign up to our newsletter

Thank you for signing up