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Differential biohydrogenation and isomerization of [U-13C]oleic and [1-13C]oleic acids by mixed ruminal microbes

Mosley, Erin E. and Nudda, Anna and Corato, Adolfo and Rossi, Erica and Jenkins, Tom C. and McGuire, Mark A. (2006) Differential biohydrogenation and isomerization of [U-13C]oleic and [1-13C]oleic acids by mixed ruminal microbes. Lipids, Vol. 41 (5), p. 513-517. eISSN 1558-9307. Article.

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DOI: 10.1007/s11745-006-5125-3


The additional mass associated with 13C in metabolic tracers may interfere with their metabolism. The comparative isomerization and biohydrogenation of oleic, [1-13C]oleic, and [U-13C]oleic acids by mixed ruminal microbes was used to evaluate this effect. The percent of stearic, cis-14 and -15, and trans-9 to -16 18:1 originating from oleic acid was decreased for [U-13C]oleic acid compared with [1-13C]oleic acid. Conversely, microbial utilization of [U-13C]oleic acid resulted in more of the 13C label in cis-9 18:1 compared with [1-13C]oleic acid (53.7 vs. 40.1%). The isomerization and biohydrogenation of oleic acid by ruminal microbes is affected by the mass of the labeled tracer.

Item Type:Article
ID Code:4078
Uncontrolled Keywords:Mixed ruminal microbes, oleic acid
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
Copyright Holders:© 2006 by AOCS Press
Deposited On:01 Jul 2010 09:31

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