Profile of fatty acid and pesticide residues of cream and yoghurt butter during storage

Abstract

Butter samples produced from cream (C) or yoghurt (Y) were evaluated for fatty acid (FA) composition and pesticide residues. The results showed that yoghurt butter has a higher health-promoting index (HPI) compared to the cream butter and overall acceptability scores at the end of storage. The yoghurt butter contained 62.81 g 100 g-1 saturated, 3.50 g 100 g-1 monounsaturated, and 2.44 g 100 g-1 polyunsaturated fatty acids whereas the cream butter contained 69.99 g 100 g-1 saturated, 3.57 g 100 g-1 monounsaturated and 2.81 g 100 g-1 polyunsaturated fatty acids, respectively. The peroxides levels varied from 0.90 for the cream to 1.44 mEq O2 kg-1 for yoghurt butter samples. The moisture content varied from 16.21 to 13.19 and 13.83 to 13.57 g 100 g-1 and the total lipid content varied from 77.5 to 79.5 and 83.0 to 83.5 g 100 g-1 for cream and yoghurt butter samples, respectively. The 13 pesticide compounds in butter samples did not exceed the legal limits.

Keywords

• traditional butter
• industrial butter
• peroxide value
• health-promoting index
• storage