Effect of ammonium nitrogen supplementation of grape juice on wine volatiles and non-volatiles composition of the aromatic grape variety Albariño

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dc.contributor.authorVilanova, M.
dc.contributor.authorSiebert, T.
dc.contributor.authorVarela, C.
dc.contributor.authorPretorius, I.
dc.contributor.authorHenschke, P.
dc.date.issued2012
dc.description.abstractVitis vinifera cv. Albariño is an aromatic variety characterised by terpenes present largely as glycosidic flavour precursor compounds, which depends on fermentation to reveal its aromatic varietal potential. Clarified Albariño must containing 250mgN/L (control) was supplemented with diammonium phosphate to 350 and 450mgN/L before fermentation with a high-nitrogen-demand wine strain of Saccharomyces cerevisiae (M05). Ammonium supplementation had a significant effect on the chemical composition (titratable acidity and ethanol) and volatile profile of Albariño wines. Varietal compounds in the free fraction (limonene, linalool, α-terpineol, α-ionone and β-damascenone) and bound (limonene, linalool and α-terpineol), as well as most yeast-derived fermentation products (including esters, higher alcohols and volatile acids) were associated with moderate nitrogen concentrations. Free β-ionone, bound geraniol, bound α-ionone, bound β-damascenone and 1-hexanol were associated with high nitrogen concentrations. OAV wines made with moderate nitrogen exhibited a higher total odorant activity, driven by ethyl esters, terpenes and Câ â -norisoprenoids, resulting in fruity and floral aroma attributes.
dc.description.statementofresponsibilityMar Vilanova, Tracey E. Siebert, Cristian Varela, Isak S. Pretorius, Paul A. Henschke
dc.identifier.citationFood Chemistry, 2012; 133(1):124-131
dc.identifier.doi10.1016/j.foodchem.2011.12.082
dc.identifier.issn0308-8146
dc.identifier.issn1873-7072
dc.identifier.orcidVarela, C. [0000-0002-4494-5810]
dc.identifier.urihttp://hdl.handle.net/2440/77464
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.rightsCopyright © 2012 Elsevier Ltd. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.foodchem.2011.12.082
dc.subjectAlbariño
dc.subjectWine
dc.subjectYeast
dc.subjectSaccharomyces cerevisiae
dc.subjectFermentation
dc.subjectAroma
dc.subjectFlavour
dc.subjectNitrogen
dc.titleEffect of ammonium nitrogen supplementation of grape juice on wine volatiles and non-volatiles composition of the aromatic grape variety Albariño
dc.title.alternativeEffect of ammonium nitrogen supplementation of grape juice on wine volatiles and non-volatiles composition of the aromatic grape variety Albarino
dc.typeJournal article
pubs.publication-statusPublished

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