title: A comparison of the aroma volatiles and fatty acid compositions of grilled beef muscle from Aberdeen Angus and Holstein-Friesian steers fed diets based on silage or concentrates.
abstract: This paper compares the volatile compound and fatty acid compositions of grilled beef from Aberdeen Angus and Holstein-Friesian steers slaughtered at 14 months, each breed fed from 6 months on either cereal-based concentrates or grass silage. Linoleic acid levels were higher in the muscle of concentrates-fed animals, which in the cooked meat resulted in increased levels of several compounds formed from linoleic acid decomposition. Levels of α-linolenic acid, and hence some volatile compounds derived from this fatty acid, were higher in the meat from the silage-fed steers. 1-Octen-3-ol, hexanal, 2-pentylfuran, trimethylamine, cis- and trans-2-octene and 4,5-dimethyl-2-pentyl-3-oxazoline were over 3 times higher in the steaks from the concentrates-fed steers, while grass-derived 1-phytene was present at much higher levels in the beef from the silage-fed steers. Only slight effects of breed were observed.
authors: School of Food Biosciences, The University of Reading, Whiteknights, Reading RG6 6AP, UK.
authors: J S
authors: JS
authors: Elmore
authors: H E
authors: HE
authors: Warren
authors: D S
authors: DS
authors: Mottram
authors: N D
authors: ND
authors: Scollan
authors: M
authors: M
authors: Enser
authors: R I
authors: RI
authors: Richardson
authors: J D
authors: JD
authors: Wood