title: Nitrogen fertilisation increases biogenic amines and amino acid concentrations in Vitis vinifera var. Riesling musts and wines.
abstract: BACKGROUND
  Wines rich in biogenic amines can cause adverse health effects to the consumer. Being nitrogen-containing substances, the amount of amines in wines might be strongly influenced by the rate of nitrogen fertiliser application during grape production. The aim of this work was to evaluate the effect of nitrogen fertilisation in the vineyard on the formation of biogenic amines in musts and wines.
  
  
  RESULTS
  In a field experiment which compared unfertilised and fertilised (60 and 150 kg N ha(-1)) vines over two separate years, the total amine concentrations in must and wine increased. The latter was due to an increase of individual amines such as ethylamine, histamine, isopentylamine, phenylethylamine and spermidine in the musts and wines with the nitrogen application. Furthermore, the fermentation process increased the concentration of histamine and ethylamine in most of the treatments, while spermidine, spermine and isopentylamine concentrations generally decreased. Throughout both vintages, the concentrations of tyramine and histamine of the investigated musts and wines never reached detrimental levels to the health of non-allergenic people.
  
  
  CONCLUSIONS
  Nitrogen fertilisation has a significant effect on amines formation in musts and wines. Furthermore, during fermentation, ethylamine and histamine increased while other amines were presumably serving as N sources during fermentation.
authors: Hochschule RheinMain, University of Applied Sciences, Kurt-Schumacher-Ring 18, D-65197, Wiesbaden, Germany.
authors: Inga
authors: I
authors: Smit
authors: Marco
authors: M
authors: Pfliehinger
authors: Antonie
authors: A
authors: Binner
authors: Manfred
authors: M
authors: Großmann
authors: Walter J
authors: WJ
authors: Horst
authors: Otmar
authors: O
authors: Löhnertz
mesh_terms: D001679:Biogenic Amines / Q000032:analysis*; D005285:Fermentation; D005308:Fertilizers; D005638:Fruit / Q000378:metabolism*; D006801:Humans; D009584:Nitrogen / Q000378:metabolism*; D027843:Vitis / Q000378:metabolism*; D014920:Wine / Q000032:analysis*
chemical_list: D001679:Biogenic Amines; D005308:Fertilizers; D009584:Nitrogen
keywords: Riesling; amino acids; ethylamine; histamine; nitrogen fertilisation; phenylethylamine