Articles
EVALUATION OF ALTERNATIVE METHODS FOR COCHINEAL (DACTYLOPIUS COCCUS COSTA (HEM, DACTYLOPIIDAE) SACRIFICE AND DEHYDRATION
Article number
728_36
Pages
257 – 262
Language
English
Abstract
A major pigment of the cochineal insect, carminic acid is a colorant widely used natural in food industry.
The effect of four sacrifice methods (ultrasound, asphyxiation, freezing and thermal treatment) and two simultaneous sacrifice/drying methods (microwave and forced-air oven) on the final quality of cochineal were tested.
Color of samples before and after treatments was determined by colorimetry.
Carminic acid quantification was done by spectrophotometry and pigment quantifycation and characterization were determined by liquid chromatography.
Results revealed similar product color quality independent on the sacrifice/drying methods.
However, the use of microwaves considerably shortened the dehydration process, which allowed important energy and time savings as compared to forced-air oven drying.
The effect of four sacrifice methods (ultrasound, asphyxiation, freezing and thermal treatment) and two simultaneous sacrifice/drying methods (microwave and forced-air oven) on the final quality of cochineal were tested.
Color of samples before and after treatments was determined by colorimetry.
Carminic acid quantification was done by spectrophotometry and pigment quantifycation and characterization were determined by liquid chromatography.
Results revealed similar product color quality independent on the sacrifice/drying methods.
However, the use of microwaves considerably shortened the dehydration process, which allowed important energy and time savings as compared to forced-air oven drying.
Authors
S.J. Mendez Gallegos, G. Esparza, M. Gonzalez, M.G. Lobo, A. Carnero
Keywords
natural pigment, carminic acid, colorant
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