Ice morphology modification and solute recovery improvement by heating and annealing during block freeze-concentration of coffee extracts

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dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia
dc.contributor.author	Robles, Catalina Maria
dc.contributor.author	Quintanilla Carvajal, M. X.
dc.contributor.author	Moreno, Fabian Leonardo
dc.contributor.author	Hernández Yáñez, Eduard
dc.contributor.author	Raventós Santamaria, Mercè
dc.contributor.author	Ruiz Pardo, Yolanda
dc.date	2016-11-01
dc.identifier.citation	Robles, C., Quintanilla, M., Moreno, F., Hernandez, E., Raventos, M., Ruiz, Y. Ice morphology modification and solute recovery improvement by heating and annealing during block freeze-concentration of coffee extracts. "Journal of food engineering", 1 Novembre 2016, vol. 189, p. 72-81.
dc.identifier.citation	0260-8774
dc.identifier.citation	10.1016/j.jfoodeng.2016.05.021
dc.identifier.uri	http://hdl.handle.net/2117/99441
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation	http://www.sciencedirect.com/science/article/pii/S0260877416301923
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria agroalimentària::Indústries agroalimentàries::Begudes
dc.subject	Coffee
dc.subject	Ice morphology
dc.subject	Cafè -- Indústria i comerç
dc.title	Ice morphology modification and solute recovery improvement by heating and annealing during block freeze-concentration of coffee extracts
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Several treatments on ice blocks can be applied during block freeze-concentration to increase the solute recovery from the ice. In the present study, the changes in the ice block’s temperature and the application of annealing during the block freeze-concentration of aqueous coffee extracts were studied. The ice block was subjected to heating and annealing prior to the thawing stage. The effect of coolant temperature during ice block heating (T = -10 and -5 °C) and the application of annealing (+, -) on solute recovery and ice structure morphology was evaluated. The use of annealing during block freeze-concentration modified the ice crystal morphology and increased the solute recovery only when it is applied at the highest temperature. In general, the annealing process increased the size and circularity of the ice crystals, consequently improving the solute recovery. Thus, annealing can be used to increase the solute recovery during block freeze-concentration.

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