Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Tsvetelina DIMITROVA, Lora MONDESHKA, Miroslav HRISTOV, Tsvetomira BANCHEVA, Nikolay MARKOV, Svetoslava STOYCHEVA, Silviya IVANOVA
The physicochemical parameters of kefir on the 3rd and 14th day of the storage process produced from the milk of 'Bulgarian White Dairy' (BWD) goat breed and its crossings with 'Toggenburg' (TG) and 'Anglo-Nubian’ (AN) were studied. The main groups of fatty acids in kefir on the 14th day of storage were identified and a qualitative assessment of milk fat was made based on lipid indices. The highest content of protein, fat and dry matter in kefir on the 3rd and 14th day was found in BWDxAN breed (5.42%, 5.34%; 4.77%, 4.66% and 15.84%, 15.74%), and the lowest in kefir from BWD (5.07%, 4.99%; 4.14%, 4.05%; 14.92%, 14.15%). Kefir from the milk of BWDxAN has the highest content of saturated fatty acids (SFAs), and monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs) predominate in kefir from BWD. The content of SFAs in the studied kefir was from 3.0g/100g to 3.59 g/100 g. Therefore, kefir products are determined as high in content of saturated fatty acids (over 1.5 g/100 g product) and low content of trans fatty acids (0.12-0.17 g/100 g product).
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