Ruminant meat and milk contain δ-valerobetaine, another precursor of trimethylamine N-oxide (TMAO) like γ-butyrobetaine

Apr 28, 2018Food chemistry

Ruminant meat and milk contain δ-valerobetaine, a precursor of TMAO like γ-butyrobetaine

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Abstract

δ-valerobetaine was found at levels higher than γ-butyrobetaine in all ruminant samples.

  • Quaternary ammonium compounds from meat and dairy products are metabolic precursors of trimethylamine (TMA).
  • N-trimethyllysine transforms into δ-valerobetaine in the rumen of ruminants.
  • This study confirms the presence of δ-valerobetaine in ruminant milk and meat for the first time.
  • δ-valerobetaine can be broken down by gut bacteria to produce TMA, which is associated with trimethylamine N-oxide (TMAO), a compound linked to atherosclerosis.
  • The findings support earlier observations of free N-trimethyllysine being widespread in plants.

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