Cochineal Carmine Adsorbed on Layered Zinc Hydroxide Salt: Responsible for the Reddish-Pink Color of Cooked Hams Without Adding Curing Salts

Document Type : Original Article


1 Departamento de Alimentos, Programa de Pós-graduação em Tecnologia de Alimentos,‏ Universidade Tecnológica Federal do Paraná, P.O. Box: 85884-000, Medianeira‎‏, Brasil

2 Departamento de Química, Universidade Tecnológica Federal do Paraná, P.O. Box: 85884-000, Medianeira‎‏, Brasil

3 Departamento de Física, Universidade Tecnológica Federal do Paraná, P.O. Box: 85884-000, Medianeira, Brasil


Color is one of the main attributes used to select or reject meat products, with the characteristic reddish-pink color of cured meats being developed by adding nitrate salts, which are rejected by many consumers due to their harmful effects on health. This study aimed to apply a hybrid dye (ZHN-carmine) synthesized from layered zinc hydroxide salt (ZHN) to produce a reddish-pink color in sliced cooked ham and to evaluate color stability during storage. The ham samples were prepared with cochineal carmine and hybrid dye (ZHN-carmine), sliced, vacuum-packed, and non-vacuum-packed, and exposed to white fluorescent light (1100 LUX) (5 ± 1 °C). The instrumental color measurement was performed at 0, 1, 4, 6, 8, 11, 13, and 15 day intervals. Distinction between the vacuum-packed ham samples and the non-vacuum-packed ham samples was possible based on a* value (red color intensity), which showed the importance of oxygen removal for red color stability. The reddish-pink color was more intense in the ham added with ZNH-carmine, and no color reduction was observed over the days, irrespective of it being vacuum-packed or not. Cochineal carmine adsorbed onto layered zinc hydroxide salt may be a potential replacement for curing salts regarding color formation in vacuum-packed or non-vacuum-packed cooked ham.


Main Subjects

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