Detection of water adulteration in camel milk by freezing point
Konuspayeva G., Nurseitova M., Chuvashova E., Bilal Z., Amutova F., Faye B.. 2026. Journal of Dairy Research : 4 p..
This Research Communication aimed to establish reference freezing point (FP) values for raw Bactrian and dromedary camel milk and to evaluate the detectability of water dilution up to 30% using the cryoscopy method. A total of 38 milk samples from healthy camels in Kazakhstan were analysed. Pure Bactrian camel milk exhibited FP values between -0.542°C and -0.799°C, while dromedary milk ranged from -0.527°C to -0.655°C. Progressive dilution caused a significant linear increase in FP in both species (p < 0.0001). Although a 10% water addition resulted in measurable changes, natural variability may mask slight adulteration. FP showed weak correlations with protein and pH, with species-specific differences. These results provide reliable reference values for the FP and confirm the possibility of detecting adulteration of camel milk.
Mots-clés : dromadaire; lait de chamelle; chameau; lait cru; crioscopie; composition chimique; propriété physicochimique; analyse du risque; adultération; composition des aliments; lait; traite des animaux; chameau d'asie; kazakhstan; arabie saoudite
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