Email updates

Keep up to date with the latest news and content from BMC Microbiology and BioMed Central.

Open Access Highly Accessed Research article

Tyrosine-containing peptides are precursors of tyramine produced by Lactobacillus plantarum strain IR BL0076 isolated from wine

Maryse Bonnin-Jusserand, Cosette Grandvalet, Aurélie Rieu, Stéphanie Weidmann and Hervé Alexandre*

Author Affiliations

AgrosupDijon, Valmis UMR PAM, Université de Bourgogne, Institut Universitaire de la Vigne et du Vin Jules Guyot, rue Claude Ladrey, BP 27877, 21078, Dijon Cedex, France

For all author emails, please log on.

BMC Microbiology 2012, 12:199  doi:10.1186/1471-2180-12-199

Published: 11 September 2012

Abstract

Background

Biogenic amines are molecules with allergenic properties. They are found in fermented products and are synthesized by lactic acid bacteria through the decarboxylation of amino acids present in the food matrix. The concentration of biogenic amines in fermented foodstuffs is influenced by many environmental factors, and in particular, biogenic amine accumulation depends on the quantity of available precursors. Enological practices which lead to an enrichment in nitrogen compounds therefore favor biogenic amine production in wine. Free amino acids are the only known precursors for the synthesis of biogenic amines, and no direct link has previously been demonstrated between the use of peptides by lactic acid bacteria and biogenic amine synthesis.

Results

Here we demonstrate for the first time that a Lactobacillus plantarum strain isolated from a red wine can produce the biogenic amine tyramine from peptides containing tyrosine. In our conditions, most of the tyramine was produced during the late exponential growth phase, coinciding with the expression of the tyrDC and tyrP genes. The DNA sequences of tyrDC and tyrP in this strain share 98% identity with those in Lactobacillus brevis consistent with horizontal gene transfer from L. brevis to L. plantarum.

Conclusion

Peptides amino acids are precursors of biogenic amines for Lactobacillus plantarum strain IR BL0076.

Keywords:
Tyramine; Peptides; Lactobacillus plantarum; Wine