Removal of UHT dairy fouling — An efficient cleaning process by optimizing the rate controlling alkaline cleaning step
(2019) In Food and Bioproducts Processing 113. p.101-107- Abstract
A rigid mineral-based deposit, termed ultra-high temperature (UHT) fouling, is formed on heat exchanger surfaces during milk processing at 140 °C. The removal of this type of fouling is for the first time assessed using a laser triangulation sensor and a camera, to measure changes in the thickness and to visualize structural changes in the fouling in situ. The process was monitored during both the alkali and acid cleaning steps. There was no global swelling of the fouling layer during alkali cleaning under the investigated conditions. However, significant degradation of the protein network was observed, which affected the acid cleaning step and the efficiency of the cleaning process. We conclude that treatment with alkali is required to... (More)
A rigid mineral-based deposit, termed ultra-high temperature (UHT) fouling, is formed on heat exchanger surfaces during milk processing at 140 °C. The removal of this type of fouling is for the first time assessed using a laser triangulation sensor and a camera, to measure changes in the thickness and to visualize structural changes in the fouling in situ. The process was monitored during both the alkali and acid cleaning steps. There was no global swelling of the fouling layer during alkali cleaning under the investigated conditions. However, significant degradation of the protein network was observed, which affected the acid cleaning step and the efficiency of the cleaning process. We conclude that treatment with alkali is required to facilitate the removal of deposits with high mineral content during the acid cleaning step. The results have implications for optimizing the cleaning process so as to minimize energy expenditure, while ensuring efficient heat transfer and maintaining product quality.
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- author
- Hagsten, Carin LU ; Innings, Fredrik LU ; Trägårdh, Christian LU ; Hamberg, Lars ; Paulsson, Marie LU and Nylander, Tommy LU
- organization
- publishing date
- 2019-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cleaning, Cleaning agent concentration, Dairy fouling, Mineral deposit, Protein degradation, UHT
- in
- Food and Bioproducts Processing
- volume
- 113
- pages
- 101 - 107
- publisher
- Elsevier
- external identifiers
-
- scopus:85057977224
- ISSN
- 0960-3085
- DOI
- 10.1016/j.fbp.2018.11.010
- language
- English
- LU publication?
- yes
- id
- 7970cc99-74f1-46e3-8bbe-41e9bf40bd87
- date added to LUP
- 2019-01-02 09:46:27
- date last changed
- 2023-11-18 09:37:16
@article{7970cc99-74f1-46e3-8bbe-41e9bf40bd87, abstract = {{<p>A rigid mineral-based deposit, termed ultra-high temperature (UHT) fouling, is formed on heat exchanger surfaces during milk processing at 140 °C. The removal of this type of fouling is for the first time assessed using a laser triangulation sensor and a camera, to measure changes in the thickness and to visualize structural changes in the fouling in situ. The process was monitored during both the alkali and acid cleaning steps. There was no global swelling of the fouling layer during alkali cleaning under the investigated conditions. However, significant degradation of the protein network was observed, which affected the acid cleaning step and the efficiency of the cleaning process. We conclude that treatment with alkali is required to facilitate the removal of deposits with high mineral content during the acid cleaning step. The results have implications for optimizing the cleaning process so as to minimize energy expenditure, while ensuring efficient heat transfer and maintaining product quality.</p>}}, author = {{Hagsten, Carin and Innings, Fredrik and Trägårdh, Christian and Hamberg, Lars and Paulsson, Marie and Nylander, Tommy}}, issn = {{0960-3085}}, keywords = {{Cleaning; Cleaning agent concentration; Dairy fouling; Mineral deposit; Protein degradation; UHT}}, language = {{eng}}, pages = {{101--107}}, publisher = {{Elsevier}}, series = {{Food and Bioproducts Processing}}, title = {{Removal of UHT dairy fouling — An efficient cleaning process by optimizing the rate controlling alkaline cleaning step}}, url = {{http://dx.doi.org/10.1016/j.fbp.2018.11.010}}, doi = {{10.1016/j.fbp.2018.11.010}}, volume = {{113}}, year = {{2019}}, }