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Pulsed electric field treatment for solid-liquid extraction of red beetroot pigment: mathematical modelling of mass transfer

Chalermchat, Yongyut LU ; Fincan, Mustafa LU and Dejmek, Petr LU (2004) In Journal of Food Engineering 64(2). p.229-236
Abstract
The extraction of red pigment and conductive matters from individual red beet tissue slices following pulsed electric field pretreatment of different durations was compared with a two dimensional bimodal Fickian diffusion model. The process appeared to be governed by two apparent diffusion coefficients, one slow and one fast. The values of these coefficients were independent of the duration of treatment, but the yield associated with each coefficient varied. Following the treatment of longest duration and treatment by freezing and thawing of the tissue, the yield from the faster diffusion coefficient accounted completely for the mass transport. The faster apparent diffusion coefficient was 2-5 times smaller than the diffusion coefficients... (More)
The extraction of red pigment and conductive matters from individual red beet tissue slices following pulsed electric field pretreatment of different durations was compared with a two dimensional bimodal Fickian diffusion model. The process appeared to be governed by two apparent diffusion coefficients, one slow and one fast. The values of these coefficients were independent of the duration of treatment, but the yield associated with each coefficient varied. Following the treatment of longest duration and treatment by freezing and thawing of the tissue, the yield from the faster diffusion coefficient accounted completely for the mass transport. The faster apparent diffusion coefficient was 2-5 times smaller than the diffusion coefficients in dilute solution. (C) 2003 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Fickian diffusion, Bimodal, Red beet, Diffusion coefficient, Pulsed electric field
in
Journal of Food Engineering
volume
64
issue
2
pages
229 - 236
publisher
Elsevier
external identifiers
  • wos:000221153500012
  • scopus:1842427818
ISSN
0260-8774
DOI
10.1016/j.jfoodeng.2003.10.002
language
English
LU publication?
yes
id
6896adc2-c952-4377-abe2-d34ae7171ce9 (old id 139217)
date added to LUP
2007-07-18 13:18:18
date last changed
2017-08-06 04:41:49
@article{6896adc2-c952-4377-abe2-d34ae7171ce9,
  abstract     = {The extraction of red pigment and conductive matters from individual red beet tissue slices following pulsed electric field pretreatment of different durations was compared with a two dimensional bimodal Fickian diffusion model. The process appeared to be governed by two apparent diffusion coefficients, one slow and one fast. The values of these coefficients were independent of the duration of treatment, but the yield associated with each coefficient varied. Following the treatment of longest duration and treatment by freezing and thawing of the tissue, the yield from the faster diffusion coefficient accounted completely for the mass transport. The faster apparent diffusion coefficient was 2-5 times smaller than the diffusion coefficients in dilute solution. (C) 2003 Elsevier Ltd. All rights reserved.},
  author       = {Chalermchat, Yongyut and Fincan, Mustafa and Dejmek, Petr},
  issn         = {0260-8774},
  keyword      = {Fickian diffusion,Bimodal,Red beet,Diffusion coefficient,Pulsed electric field},
  language     = {eng},
  number       = {2},
  pages        = {229--236},
  publisher    = {Elsevier},
  series       = {Journal of Food Engineering},
  title        = {Pulsed electric field treatment for solid-liquid extraction of red beetroot pigment: mathematical modelling of mass transfer},
  url          = {http://dx.doi.org/10.1016/j.jfoodeng.2003.10.002},
  volume       = {64},
  year         = {2004},
}