Dietary trans fatty acids and quality assessment of fatty acid composition in curd from goat's milk

摘要

The study was conducted with curd produced by goat's milk from three breed groups - Bulgarian White Dairy (BWD) and its crosses with Anglo-Nubian (BWDxAN) and Toggenburg goats (BWDxTG) during the lactation to establish the content of natural trans fatty acids (TFA) and to assess the quality of the fatty acid composition of the product as a healthy source in human nutrition.The curd obtained from the BWD's milk j have the highest fat content - 28.91%, while its crosses with TG are the lowest - 24.87%, the results obtained for the protein, ash content and total solids are analogous.The lipid preventive score in curd rangesfrom 59.40 to 69.46 g/100g of product. The atherogenic index in the studied threegoat breeds group ranges from 2.13 to 3.78 and the thrombogenic index keeps the trend of changes in the atherogenic index from 2.91 to 3.71.The highest values for the atherogenic and thrombogenic index were found in BWD. The analysed curd from goat milk were characterized by a low cholesterolemic index (less than 1,0) and ranged from 0.28 to 0.70, such as the lowest being BWDxTG - 0.9. The curds of different goat breeds group have a TFA content from 0.44 to 1.25 g/100 g curd. The content of saturated fatty acids in the analysed curd from goat's milk during the lactation ranged from 20.10 to 23.79, as the lowest average being found in BWDxTG- 21.02 g/100 g curd. This defines them as curds with a high content of saturated fatty acids (over 1.5 g/100 g curd).