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Abstract

Veterinary and sanitary examination of nutria fat.

Abstract

The article presents the results of veterinary and sanitary examination of external and internal nutria fat. The research materials were the following: the external fat, selected from the dorsal surface of the carcass and the internal fat, represented by the omentum and kidney fat. To conduct the research the samples of fat were melted in porcelain mortars. In total, 116 fat samples were taken. An organoleptic study was undertaken by determining the color, smell, clarity and consistency of the fat. In addition, the following physical and chemical indicators were identified to evaluate the quality of fat: peroxide value, acid number and qualitative aldehyde reaction. The peroxide number of fat was indicated according to the State Standard of the Russian Federation 51487-99. "Vegetable oils and animal fats. Indicating Method of the peroxide number". Acid number of fat was indicated according to the State Standard of the Russian Federation 50457-92 (ISO 660-83) "Animal and vegetable fats and oils. Indication of acid number and acidity". Qualitative aldehydes reaction was carried out with resorcinol in benzene according to the Widann Method. Iodine number of fat was indicated according to the State Standard of the Russian Federation ISO 3961-2010 "Animal and vegetable fats and oils. Indication of iodine number". As a result of the conducted studies, it has been established that the nutria fat in terms of organoleptic, physical and chemical parameters meets the requirements of the current regulatory and technical documentation. The following indicators, established by the author of the research, can be used to identify the fat specificity: melting temperature, refractive index and iodine number.