Effect of different N fertilization of vine on the tryptophan, free and total indole-3-acetic acid concentrations
The compound responsible for UTA (untypical ageing off-flavour) in wines is o-AAP (o-amino acetophenone). It is formed from IAA (indole-3-acetic acid), triggered by sulfurylation. The aim of this study was to evaluate the effect of different N fertilizer supply on this precursor in must and wine, ma...
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| Veröffentlicht in: | Vitis 2004, Vol.43 (4), p.157-162 |
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| creator | LINSENMEIER, A LÖHNERTZ, O SCHUBERT, S |
| description | The compound responsible for UTA (untypical ageing off-flavour) in wines is o-AAP (o-amino acetophenone). It is formed from IAA (indole-3-acetic acid), triggered by sulfurylation. The aim of this study was to evaluate the effect of different N fertilizer supply on this precursor in must and wine, making use of a long-term nitrogen fertilization experiment. Trp (Tryptophan) as well as free and conjugated IAA were determined in musts and wines produced from grapevines supplied with 0, 30, 60, 90 or 150 kg N ha super(-1) year super(-1). IAA concentrations in musts and wines varied highly over years (1994-1999), wines containing about half of the total IAA of musts. The IAA concentration in must was positively correlated with the concentration of amino acids in must, however, nitrogen supply did not have any effect, neither on Trp nor on IAA concentrations. |
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It is formed from IAA (indole-3-acetic acid), triggered by sulfurylation. The aim of this study was to evaluate the effect of different N fertilizer supply on this precursor in must and wine, making use of a long-term nitrogen fertilization experiment. Trp (Tryptophan) as well as free and conjugated IAA were determined in musts and wines produced from grapevines supplied with 0, 30, 60, 90 or 150 kg N ha super(-1) year super(-1). IAA concentrations in musts and wines varied highly over years (1994-1999), wines containing about half of the total IAA of musts. The IAA concentration in must was positively correlated with the concentration of amino acids in must, however, nitrogen supply did not have any effect, neither on Trp nor on IAA concentrations.</description><identifier>ISSN: 0042-7500</identifier><identifier>CODEN: VITIAY</identifier><language>eng</language><publisher>Siebeldingen: Institut für Rebenzüchtung Geilweilerhof der Bundesanstalt für Züchtungsforschung an Kulturplanzen</publisher><subject>Agronomy. Soil science and plant productions ; Biological and medical sciences ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Nitrogen, phosphorus, potassium fertilizations ; Soil-plant relationships. Soil fertility. Fertilization. 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It is formed from IAA (indole-3-acetic acid), triggered by sulfurylation. The aim of this study was to evaluate the effect of different N fertilizer supply on this precursor in must and wine, making use of a long-term nitrogen fertilization experiment. Trp (Tryptophan) as well as free and conjugated IAA were determined in musts and wines produced from grapevines supplied with 0, 30, 60, 90 or 150 kg N ha super(-1) year super(-1). IAA concentrations in musts and wines varied highly over years (1994-1999), wines containing about half of the total IAA of musts. The IAA concentration in must was positively correlated with the concentration of amino acids in must, however, nitrogen supply did not have any effect, neither on Trp nor on IAA concentrations.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agronomy. Plant production</subject><subject>Nitrogen, phosphorus, potassium fertilizations</subject><subject>Soil-plant relationships. Soil fertility. Fertilization. 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Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agronomy. Plant production</topic><topic>Nitrogen, phosphorus, potassium fertilizations</topic><topic>Soil-plant relationships. Soil fertility. Fertilization. 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It is formed from IAA (indole-3-acetic acid), triggered by sulfurylation. The aim of this study was to evaluate the effect of different N fertilizer supply on this precursor in must and wine, making use of a long-term nitrogen fertilization experiment. Trp (Tryptophan) as well as free and conjugated IAA were determined in musts and wines produced from grapevines supplied with 0, 30, 60, 90 or 150 kg N ha super(-1) year super(-1). IAA concentrations in musts and wines varied highly over years (1994-1999), wines containing about half of the total IAA of musts. The IAA concentration in must was positively correlated with the concentration of amino acids in must, however, nitrogen supply did not have any effect, neither on Trp nor on IAA concentrations.</abstract><cop>Siebeldingen</cop><pub>Institut für Rebenzüchtung Geilweilerhof der Bundesanstalt für Züchtungsforschung an Kulturplanzen</pub><tpages>6</tpages></addata></record> |
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| ispartof | Vitis, 2004, Vol.43 (4), p.157-162 |
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| source | EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Agronomy. Soil science and plant productions Biological and medical sciences Fundamental and applied biological sciences. Psychology General agronomy. Plant production Nitrogen, phosphorus, potassium fertilizations Soil-plant relationships. Soil fertility. Fertilization. Amendments Vitis |
| title | Effect of different N fertilization of vine on the tryptophan, free and total indole-3-acetic acid concentrations |
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