Comparative Study of Coagulation Dynamics

Gomes, Sandra; Pina, Ivanilda; Fernandes, Jaime; Dias, João; Reboredo, Fernando; Martins, António P.L.; Alvarenga, Nuno

http://hdl.handle.net/10362/178567

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Autores

Martins, António P.L.

Alvarenga, Nuno

Resumo(s)

Milk coagulants play a crucial role in defining curd characteristics. The objective of this study was to compare the coagulation dynamics of two commonly used coagulants in cheesemaking: cardoon flower extract (Cynara cardunculus L.) and commercial chymosin, using sheep milk from four different origins in the Baixo Alentejo region of Portugal, as the substrate. Milk composition was determined using the MilkoScan 133B, while the milk-clotting time (MCT) was measured following ISO 23058/IDF 199:2006 guidelines with slight modifications and coagulation kinetics, and technological properties were evaluated using the Optigraph apparatus. The results demonstrate that the type of coagulant impacts the coagulation properties of sheep milk. Pearson’s correlation analysis indicated that milk samples with higher protein content exhibited longer coagulation times but resulted in firmer curds. On the other hand, the use of cardoon flower extract introduced greater variability compared to chymosin, with a delayed onset of coagulation, reduced curd firmness, and increased variability in enzymatic kinetics. These results suggest that cardoon extract, while traditional, introduces greater heterogeneity in curd formation compared to the more consistent action of chymosin.

Descrição

The present research work was financed by national funds through the ministry of Agriculture and Rural Development and co-financed by the European Agricultural Fund for Rural Development (EAFRD) through the partnership agreement Portugal2020\u2014PDR, under the project ALT20-03-0246-FEDER-000067 (CynaraTec\u2014Transfer\u00EAncia de Tecnologia para Valoriza\u00E7\u00E3o do Cardo). Publisher Copyright: © 2024 by the authors.

Palavras-chave

chymosin coagulation properties Cynara cardunculusL kinetics sheep milk veterinary (miscalleneous) Agricultural and Biological Sciences (miscellaneous) SDG 7 - Affordable and Clean Energy SDG 9 - Industry, Innovation, and Infrastructure SDG 12 - Responsible Consumption and Production