Original scientific paper
https://doi.org/10.31727/m.20.4.2
The influence of antioxidants on the oxidative stability of pork fat
Tihomir Moslavac
; Prehrambeno-tehnološki fakultet, Sveučilište Josipa Jurja Strossmayera, Osijek, Hrvatska
Stela Jokić
; Prehrambeno-tehnološki fakultet, Sveučilište Josipa Jurja Strossmayera, Osijek, Hrvatska
Drago Šubarić
; Prehrambeno-tehnološki fakultet, Sveučilište Josipa Jurja Strossmayera, Osijek, Hrvatska
Krunoslav Aladić
; Hrvatski veterinarski institut, Zagreb, Hrvatska
Abstract
Lipid oxidation is a major problem in animal fats, it is the cause of important deteriorative changes in their chemical, sensory and nutritional properties. Pork fat is subject to oxidation during the production, storage and heat treatment. This study researched the effect of natural antioxidants (rosemary extract type Oxy’Less CS, sage extract, olive pomace extract, alpha tocopherol, mixture tocopherol) and synthetic antioxidants (PG, BHA) on the oxidative stability of pork fat. The oxidative stability of pork fat, with and without added antioxidant, was evaluated using the sustainability test at 98 oC. The results are expressed as peroxide number value (mmol O2/kg) after keeping the sample for a certain period of time at temperature of 98°C. The result showed that greater antioxidant activity has a rosemary extract of the type Oxy'Less CS, has achieved greater efficacy of the protection of pork fat than oxidation, compared to other antioxidants tested. Synthetic antioxidants propyl galate and butylhydroxyanisole have successfully increased the stability of pork fat to oxidation, with a higher antioxidant activity showing propyl galate.
Keywords
pork fat; oxidative stability; antioxidants; sustainability test
Hrčak ID:
204221
URI
Publication date:
27.7.2018.
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