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Break-Up of Plant Cell Structures in High Pressure Homogenizers – Prospects and Challenges for Processing of Plant-Based Beverages

Ransmark, Eva LU ; Sørensen, Hanne ; Gómez Galindo, Federico LU and Håkansson, Andreas LU orcid (2025) In Food Engineering Reviews
Abstract

For more than a century, the dairy industry has used high-pressure homogenization for size reduction of fat globules. The prevailing break-up mechanism, turbulence, has been thoroughly investigated and the equipment continuously optimized thereafter. However, the high-pressure homogenizer is also used in size reduction of plant cell structures, for example in production lines of plant-based beverages, fruit and vegetable juices and ketchup. This review will provide a scientific basis for homogenization of plant-based materials with focus on break-up mechanisms. A cross-study comparison shows that different raw materials break in different ways, e.g. individual cells breaking into cell wall fragments and cell clusters breaking into... (More)

For more than a century, the dairy industry has used high-pressure homogenization for size reduction of fat globules. The prevailing break-up mechanism, turbulence, has been thoroughly investigated and the equipment continuously optimized thereafter. However, the high-pressure homogenizer is also used in size reduction of plant cell structures, for example in production lines of plant-based beverages, fruit and vegetable juices and ketchup. This review will provide a scientific basis for homogenization of plant-based materials with focus on break-up mechanisms. A cross-study comparison shows that different raw materials break in different ways, e.g. individual cells breaking into cell wall fragments and cell clusters breaking into smaller cell clusters. In general, raw materials which after intense premixing exist as cell clusters are more difficult to break than raw materials existing as individual cells. The resistance to break-up also appears to follow ‘raw material hardness’, where harder raw materials, e.g., parsnip and almond, are more difficult to break than softer raw materials, e.g., strawberry and orange. It can also be concluded that the initial particle size is of large importance for the size after high pressure homogenization. It is concluded that little is known about the break-up mechanism(s). Much does, however, point towards the mechanism being different from that of emulsion drop break-up. Suggestions for future studies, both regarding fundamental understanding (e.g., cell strength and breakup, HPH mechanistic studies and break up visualisations) and industrial applications (e.g., energy optimal operation, device design and wear) are provided.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Break-up mechanisms, Fluid-mechanical stress, High-pressure homogenization, Plant cell structures, Plant-based beverages
in
Food Engineering Reviews
publisher
Springer
external identifiers
  • scopus:85218833267
ISSN
1866-7910
DOI
10.1007/s12393-025-09397-7
language
English
LU publication?
yes
additional info
Publisher Copyright: © The Author(s) 2025.
id
e9bc9859-844c-4e48-ba23-57f4e12a73d4
date added to LUP
2025-03-11 12:20:15
date last changed
2025-04-08 16:27:07
@article{e9bc9859-844c-4e48-ba23-57f4e12a73d4,
  abstract     = {{<p>For more than a century, the dairy industry has used high-pressure homogenization for size reduction of fat globules. The prevailing break-up mechanism, turbulence, has been thoroughly investigated and the equipment continuously optimized thereafter. However, the high-pressure homogenizer is also used in size reduction of plant cell structures, for example in production lines of plant-based beverages, fruit and vegetable juices and ketchup. This review will provide a scientific basis for homogenization of plant-based materials with focus on break-up mechanisms. A cross-study comparison shows that different raw materials break in different ways, e.g. individual cells breaking into cell wall fragments and cell clusters breaking into smaller cell clusters. In general, raw materials which after intense premixing exist as cell clusters are more difficult to break than raw materials existing as individual cells. The resistance to break-up also appears to follow ‘raw material hardness’, where harder raw materials, e.g., parsnip and almond, are more difficult to break than softer raw materials, e.g., strawberry and orange. It can also be concluded that the initial particle size is of large importance for the size after high pressure homogenization. It is concluded that little is known about the break-up mechanism(s). Much does, however, point towards the mechanism being different from that of emulsion drop break-up. Suggestions for future studies, both regarding fundamental understanding (e.g., cell strength and breakup, HPH mechanistic studies and break up visualisations) and industrial applications (e.g., energy optimal operation, device design and wear) are provided.</p>}},
  author       = {{Ransmark, Eva and Sørensen, Hanne and Gómez Galindo, Federico and Håkansson, Andreas}},
  issn         = {{1866-7910}},
  keywords     = {{Break-up mechanisms; Fluid-mechanical stress; High-pressure homogenization; Plant cell structures; Plant-based beverages}},
  language     = {{eng}},
  publisher    = {{Springer}},
  series       = {{Food Engineering Reviews}},
  title        = {{Break-Up of Plant Cell Structures in High Pressure Homogenizers – Prospects and Challenges for Processing of Plant-Based Beverages}},
  url          = {{http://dx.doi.org/10.1007/s12393-025-09397-7}},
  doi          = {{10.1007/s12393-025-09397-7}},
  year         = {{2025}},
}