Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10552753 | Journal of Food Composition and Analysis | 2013 | 29 Pages |
Abstract
Changes in conjugated linoleic acid (CLA) concentration, fatty acid profile and chemical composition of yogurts from cow and sheep milk, produced with traditional methods, were determined during a 14-day storage at 5 °C. When fatty acid (FA) composition of yogurts was expressed as g/100 g of edible portion (EP) saturated fatty acids (SFAs) significantly increased (P < 0.05) during storage while monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs) showed the opposite tendency in cow milk yogurts. No significant change was observed in SFAs, MUFAs and PUFAs in sheep milk yogurts. When FA composition of yogurts was expressed in g/100 g dry matter (DM), SFAs showed a significant decrease during storage (P < 0.05). The c-9, t-11 CLA isomer ranged between 0.24 and 0.45 g/100 g fat in cow milk yogurts, while in sheep milk yogurts between 0.47 and 0.76 g/100 g fat. During the 14-day storage at 5 °C, CLA significantly decreased (P < 0.05) at the end of the storage time in cow milk yogurts, while in sheep milk yogurts it significantly increased (P < 0.05). n-3 fatty acids showed a significant increase at the end of the storage period (P < 0.05) and this increase was more evident in sheep milk yogurts.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Amalia Serafeimidou, Spiros Zlatanos, George Kritikos, Alexis Tourianis,