ORIGINAL PAPER
Stability of an extruded, linseed-based functional feed additive with the supplementation of vitamin E and carvacrol
D. Čolović 1  
,   J. Lević 1,   I. Čabarkapa 1,   R. Čolović 1,   Lj. Lević 2,   I. Sedej 1
 
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1
University of Novi Sad, Institute of Food Technology, Bul. cara Lazara 1, 21000 Novi Sad, Serbia
2
University of Novi Sad, Faculty of Technology, Bul. cara Lazara 1, 21000 Novi Sad, Serbia
CORRESPONDING AUTHOR
D. Čolović   

University of Novi Sad, Institute of Food Technology, Bul. cara Lazara 1, 21000 Novi Sad, Serbia
Publication date: 2015-11-24
 
J. Anim. Feed Sci. 2015;24(4):348–357
 
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ABSTRACT
The aim of this experiment was to investigate the storage stability of a linseed-sunflower meal co-extrudate, which was produced as a functional additive to improve the fatty acid composition of animal feed. Since a high content of α-linolenic acid causes low oxidative stability of this product, antioxidants, vitamin E (135 mg· 100 g–1) and carvacrol (200 mg· 100 g–1), were added to the co-extrudate in order to prolong its shelf life. The ratio of linseed to sunflower meal in the extruded mixture was 50:50. The produced co-extrudate was stored in a climate chamber at 63 ± 2°C in order to examine changes during storage. The following chemical parameters were determined to detect changes in the fat phase of the co-extrudate: fatty acid composition, peroxide value and free fatty acid content. The samples were also monitored for their microbiological status. Although changes in the peroxide value as well as in the free fatty acid composition were significant, changes in the fatty acid content were minimal. Carvacrol gave excellent results in suppressing microorganism development, while it proved to be less effective as an antioxidant. Vitamin E, on the other hand, showed very good antioxidant activity, but had no significant effect on the growth and development of microorganisms. These two substances did not show any synergistic oxidative effect.
 
CITATIONS (3):
1.
Fatty Acid Composition and β-Carotene Content in Egg Yolk of Laying Hens Fed with Linseed, Paprika and Marigold
Nedeljka Spasevski, Dušica Čolović, Slađana Rakita, Predrag Ikonić, Olivera Đuragić, Vojislav Banjac, Đuro Vukmirović
Contemporary Agriculture
 
2.
Detoxification of linseed-sunflower meal co-extrudate: Process prediction
Dušica Čolović, Lato Pezo, Radmilo Čolović, Vojislav Banjac, Olivera Đuragić, Nickolas Kavallieratos, Nedeljka Spasevski
Food and Feed Research
 
3.
Natural additives in functional egg production
Nedeljka Spasevski, Tatjana Peulić, Vojislav Banjac, Slađana Rakita, Lato Pezo, Radmilo Čolović, Zorica Basić
Food and Feed Research
 
ISSN:1230-1388