Effect of osmotis pretratment and pulsed electric field on the viscoelastic properties of potato tissue.
(2003) In Journal of Food Engineering 59(2-3). p.169-175- Abstract
- Compression stress relaxation of potato tissue exposed to pulsed electric field (PEF) treatment, with or without osmotic pretreatment, was measured and modelled with five parameter generalised Maxwell model. The changes in viscoelastic model coefficients were quantified as a response to applied field strength, pulse length, and pulse number and were correlated with conductivity changes. Using the same approach, additional effects of different osmotic treatments along with constant PEF treatment were also studied.
As measured by the post-PEF conductivity, the residual elasticity was the parameter most affected at lower levels of PEF treatment. At high PEF levels, the longer of the relaxation times dropped from 10 to 2–3 s... (More) - Compression stress relaxation of potato tissue exposed to pulsed electric field (PEF) treatment, with or without osmotic pretreatment, was measured and modelled with five parameter generalised Maxwell model. The changes in viscoelastic model coefficients were quantified as a response to applied field strength, pulse length, and pulse number and were correlated with conductivity changes. Using the same approach, additional effects of different osmotic treatments along with constant PEF treatment were also studied.
As measured by the post-PEF conductivity, the residual elasticity was the parameter most affected at lower levels of PEF treatment. At high PEF levels, the longer of the relaxation times dropped from 10 to 2–3 s range. Maximal PEF treatment had a similar effect to 0.7 M hyper-osmotic treatment, implying that the effect of PEF on relaxation behaviour was dominated by loss of turgor. Neither hypo-osmotic nor hyper-osmotic pretreatment appeared to interact with the PEF treatment. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/129418
- author
- Fincan, Mustafa LU and Dejmek, Petr LU
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Stress relaxation, Pulsed electric field, Relaxation time, Potato, Maxwell model, Osmotic treatment
- in
- Journal of Food Engineering
- volume
- 59
- issue
- 2-3
- pages
- 169 - 175
- publisher
- Elsevier
- external identifiers
-
- wos:000183591100010
- scopus:0038218126
- ISSN
- 0260-8774
- DOI
- 10.1016/S0260-8774(02)00454-5
- language
- English
- LU publication?
- yes
- id
- f28171ae-82ef-48ad-ab82-92cac7e47d58 (old id 129418)
- date added to LUP
- 2016-04-01 17:05:33
- date last changed
- 2023-11-14 23:27:55
@article{f28171ae-82ef-48ad-ab82-92cac7e47d58, abstract = {{Compression stress relaxation of potato tissue exposed to pulsed electric field (PEF) treatment, with or without osmotic pretreatment, was measured and modelled with five parameter generalised Maxwell model. The changes in viscoelastic model coefficients were quantified as a response to applied field strength, pulse length, and pulse number and were correlated with conductivity changes. Using the same approach, additional effects of different osmotic treatments along with constant PEF treatment were also studied.<br/><br> <br/><br> As measured by the post-PEF conductivity, the residual elasticity was the parameter most affected at lower levels of PEF treatment. At high PEF levels, the longer of the relaxation times dropped from 10 to 2–3 s range. Maximal PEF treatment had a similar effect to 0.7 M hyper-osmotic treatment, implying that the effect of PEF on relaxation behaviour was dominated by loss of turgor. Neither hypo-osmotic nor hyper-osmotic pretreatment appeared to interact with the PEF treatment.}}, author = {{Fincan, Mustafa and Dejmek, Petr}}, issn = {{0260-8774}}, keywords = {{Stress relaxation; Pulsed electric field; Relaxation time; Potato; Maxwell model; Osmotic treatment}}, language = {{eng}}, number = {{2-3}}, pages = {{169--175}}, publisher = {{Elsevier}}, series = {{Journal of Food Engineering}}, title = {{Effect of osmotis pretratment and pulsed electric field on the viscoelastic properties of potato tissue.}}, url = {{http://dx.doi.org/10.1016/S0260-8774(02)00454-5}}, doi = {{10.1016/S0260-8774(02)00454-5}}, volume = {{59}}, year = {{2003}}, }