Lipid and protein oxidation of α-linolenic acid-enriched pork during refrigerated storage as influenced by diet supplementation with olive leaves (Olea europea L.) or α-tocopheryl acetate.
The objective of this study was to evaluate the effect of diet supplementation with olive leaves or α-tocopheryl acetate on lipid and protein oxidation of raw and cooked n-3 enriched-pork during refrigerated storage. Enrichment of pork with α-linolenic acid through diet supplementation with linseed oil enhanced (p≤0.05) lipid oxidation in both raw and cooked chops but had no effect (p>0.05) on protein oxidation during refrigerated storage while decreasing (p≤0.05) the sensory attributes of cooked pork. Diet supplementation with olive leaves or α-tocopheryl acetate had no effect (p>0.05) on the fatty acid composition of pork but decreased (p≤0.05) lipid oxidation while exerting no effect (p>0.05) on protein oxidation in both raw and cooked α-linolenic acid-enriched chops stored and chilled for 9 days. Moreover, olive leaves and α-tocopheryl acetate supplemented at 10 g/kg and 200mg/kg diet, respectively, exerted (p≤0.05) a beneficial effect on the sensory attributes of cooked α-linolenic acid-enriched pork chops.
Laboratory of Hygiene of Foods of Animal Origin, Faculty of Veterinary Medicine, University of Thessaly, 43100 Karditsa, Greece.
Evropi
E
Botsoglou
Alexander
A
Govaris
Ioannis
I
Ambrosiadis
Dimitrios
D
Fletouris
D000818:Animals; D000975:Antioxidants / Q000008:administration & dosage* / Q000032:analysis; D003433:Crosses, Genetic; D004032:Diet / Q000662:veterinary*; D004044:Dietary Proteins / Q000032:analysis; D005260:Female; D061353:Food Storage; D006115:Greece; D006358:Hot Temperature; D006801:Humans; D008043:Linseed Oil / Q000009:adverse effects / Q000378:metabolism; D008315:Malondialdehyde / Q000032:analysis; D008460:Meat / Q000032:analysis*; D031658:Olea / Q000737:chemistry*; D010084:Oxidation-Reduction; D018515:Plant Leaves / Q000737:chemistry*; D010938:Plant Oils / Q000378:metabolism; D012034:Refrigeration; D012677:Sensation; D000074242:Sunflower Oil; D034421:Sus scrofa / Q000254:growth & development* / Q000378:metabolism; D017962:alpha-Linolenic Acid / Q000009:adverse effects / Q000032:analysis / Q000378:metabolism; D024502:alpha-Tocopherol / Q000008:administration & dosage* / Q000032:analysis
D000975:Antioxidants; D004044:Dietary Proteins; D010938:Plant Oils; D000074242:Sunflower Oil; D017962:alpha-Linolenic Acid; D008315:Malondialdehyde; D008043:Linseed Oil; D024502:alpha-Tocopherol