New Zealand Journal of Agricultural Research abstracts
A comparison of phenol and indole flavour compounds in fat, and of phenols in
urine of cattle fed pasture or grain
G. A. LANE
K. FRASER
AgResearch Grasslands
Private Bag 11008
Palmerston North, New Zealand
Abstract The concentrations of phenol and indole flavour
compounds in the fat of beef cattle finished for nine weeks on either
ryegrass/clover pasture or a maize-based grain diet were determined, and
compared with urinary concentrations of phenols (both free and total) and with
dietary parameters including phenolic acids. The concentration of skatole in
the fat was significantly higher for the pasture-fed steers. Treatment effects
on phenol concentrations in the fat were not significant for most phenols,
although phenolic intake and, in most cases, urinary excretion was higher on
the pasture diet. 4-Ethylphenol was a distinctive marker of the maize-based
finishing diet in both urine and fat.
Keywords indoles; phenols; phenolic acids; diet composition;
urine; fat; meat flavour
New Zealand Journal of Agricultural Research, 1999, Vol. 42: 289-296
0028-8233/99/4203-0289 $7.00/0 (c) The Royal Society of New Zealand
1999
PDF file of entire paper: medium quality (617K); (scanned from paper original: notes about this process)
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