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Differences in the metabolism of esterified and unesterified linoleic acid by rumen micro-organisms

Published online by Cambridge University Press:  09 March 2007

J. H. Moore ,
R. C. Noble ,
W. Steele  and
J. W. Czerkawski
J. H. Moore
Affiliation:
Hannah Dairy Research Institute, Ayr
R. C. Noble
Affiliation:
Hannah Dairy Research Institute, Ayr
W. Steele
Affiliation:
Hannah Dairy Research Institute, Ayr
J. W. Czerkawski
Affiliation:
Hannah Dairy Research Institute, Ayr
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Abstract

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1. Sheep were given intraruminal infusions of maize oil or linoleic acid and samples of contents were taken from the rumen and abomasum at different times after the infusions. Hydrolysis of the maize oil occurred in the rumen with the production of mono- and di-glycerides as intermediates. Linoleic acid derived from the maize oil was hydrogenated to stearic acid. When linoleic acid was infused into the rumen, little or no stearic acid was produced and octadecenoic acid accumulated.

2. When linoleic acid or maize oil was incubated with rumen contents in an artificial rumen and samples of the reaction mixtures were taken from the apparatus after various time intervals, the results were similar to those obtained in vivo, except that the hydrolysis of maize oil did not give rise to mono- and di-glycerides.

3. These results are discussed in relation to previous findings on the effects of intraruminal infusions of maize oil or linoleic acid on the fatty acid composition of the blood triglycerides of sheep.

Type
Research Article
Information
British Journal of Nutrition , Volume 23 , Issue 4 , November 1969 , pp. 869 - 878
Copyright
Copyright © The Nutrition Society 1969

References

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