Abstract:
:The aim of this research was to analyse the quality of the lipid fraction extracted from commercially available cookies intended for infants. The composition, fatty acid distribution and oxidative stability of fats, interpreted as the resistance of fats against autooxidation, were studied. In addition, the kinetic parameters of the oxidation process, such as activation energies (E(a)), pre-exponential factors (Z) and reaction rate constants (k) for fat oxidation under the differential scanning calorimetry tests conditions were calculated using the Ozawa-Flynn-Wall method and the Arrhenius equation. The distribution of fatty acids in the tested cookies is similar to that present in most of infant formulas, but differs significantly from that in human milk. Based on the results obtained, high oxidative stability of tested fats can be observed. The E(a) values ranged from 86.22 to 116.13 kJ/mol; Z from 1.95 × 10(9) to 1.05 × 10(13); and k values ranged from 5.70 × 10(- 4) min(- 1) at 100°C to 2.12 × 10(- 1) min(- 1) at 170°C.
journal_name
Int J Food Sci Nutrjournal_title
International journal of food sciences and nutritionauthors
Wirkowska M,Górska A,Bryś J,Ostrowska-Ligęza E,Koczoń Pdoi
10.3109/09637486.2011.627838subject
Has Abstractpub_date
2012-05-01 00:00:00pages
296-302issue
3eissn
0963-7486issn
1465-3478journal_volume
63pub_type
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