title: Lipid and colour stability of M. longissimus muscle from lambs fed camelina or linseed as oil or seeds.
abstract: Colour and lipid stability of M. longissimus dorsi (LD) from sheep fed diets containing different lipid sources (Megalac (MG), camelina oil (CO), linseed oil (LO), NaOH-treated camelina seed (CS), NaOH-treated linseed (LS) or CO treated with ethanolamine (CA)) were examined. After 100 days on-feed, samples of LD were collected, fatty acid profile determined and colour and lipid oxidation (2-thiobarbituric acid reactive substances; TBARS) measured during retail display in high oxygen packaging. The LS ration was most effective in increasing the 18:3n-3 and conjugated linoleic acid (CLA) concentration in muscle. Within camelina, CA resulted in the highest 18:3n-3 and lowest CLA concentration in muscle. There was no difference in colour stability. Oil (seed) supplementation increased TBARS compared to MG in the early part of display while linseed-based rations tended to cause higher TBARS than camelina-based rations. Higher muscle 18:3n-3 concentration was associated with higher oxidation during early retail display but this was not reflected in a loss of colour stability.
authors.affiliation: Teagasc, Animal and Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland. aidan.moloney@teagasc.ie
authors.forename: A P
authors.initials: AP
authors.lastname: Moloney
authors.forename: C
authors.initials: C
authors.lastname: Kennedy
authors.forename: F
authors.initials: F
authors.lastname: Noci
authors.forename: F J
authors.initials: FJ
authors.lastname: Monahan
authors.forename: J P
authors.initials: JP
authors.lastname: Kerry
mesh_terms: D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000975:Antioxidants / Q000494:pharmacology; D019607:Brassicaceae; D003116:Color; D004041:Dietary Fats / Q000378:metabolism / Q000494:pharmacology; D019587:Dietary Supplements; D019597:Flax / Q000737:chemistry; D018857:Food Packaging; D044243:Linoleic Acids, Conjugated / Q000378:metabolism*; D050356:Lipid Metabolism / Q000187:drug effects*; D015227:Lipid Peroxidation / Q000187:drug effects*; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000378:metabolism*; D010938:Plant Oils / Q000378:metabolism / Q000494:pharmacology; D028321:Plant Preparations / Q000378:metabolism / Q000494:pharmacology*; D012639:Seeds; D012756:Sheep; D013858:Thiobarbiturates / Q000378:metabolism
chemical_list: D000975:Antioxidants; D004041:Dietary Fats; D044243:Linoleic Acids, Conjugated; D010938:Plant Oils; D028321:Plant Preparations; D013858:Thiobarbiturates; C029684:thiobarbituric acid