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Effect of high pressure homogenization (HPH) on the rheological properties of tomato juice: Creep and recovery behaviours

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Issue date
2013
Author
Augusto, Pedro E. D.
Ibarz Ribas, Alberto
Cristianini, Marcelo
Suggested citation
Augusto, Pedro E. D.; Ibarz Ribas, Alberto; Cristianini, Marcelo; . (2013) . Effect of high pressure homogenization (HPH) on the rheological properties of tomato juice: Creep and recovery behaviours. Food Research International, 2013, vol. 54, núm. 1, p. 169-176. https://doi.org/10.1016/j.foodres.2013.06.027.
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Abstract
High pressure homogenization (HPH) is a non-thermal technology that has been proposed as a partial or total substitute for the thermal processing of food. Although its effect on microbial inactivation has been widely studied, the rheological changes occurring in fruit products need better describing. The present work evaluated the effect of HPH (up to 150 MPa) on the creep and recovery properties of tomato juice. The mechanical Burger's model explained juice creep compliance well, and its parameters (Newtonian dashpots and Hookean springs) were evaluated as a function of the homogenization pressure. HPH processing increased both tomato juice elastic and viscous behaviours, which could be attributed to the disruption of suspended particles during processing. Moreover, each Burger's model constituent could be related to the product internal structure. The results obtained highlighted the possible applications of the HPH process as a valuable tool to promote physical changes in food products.
URI
http://hdl.handle.net/10459.1/57997
DOI
https://doi.org/10.1016/j.foodres.2013.06.027
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Food Research International, 2013, vol. 54, núm. 1, p. 169-176
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