Preprint Article Version 1 This version is not peer-reviewed

Using Synchronous Fluorescence to Investigate Compounds and Interactions Influencing Foam Characteristics in Sparkling Wines

Version 1 : Received: 8 March 2019 / Approved: 11 March 2019 / Online: 11 March 2019 (08:04:48 CET)

How to cite: Condé, B.; Robinson, A.; Bodet, A.; Monteau, A.; Fuentes, S.; Scollary, G.; Smith, T.; Howell, K.S. Using Synchronous Fluorescence to Investigate Compounds and Interactions Influencing Foam Characteristics in Sparkling Wines. Preprints 2019, 2019030119 (doi: 10.20944/preprints201903.0119.v1). Condé, B.; Robinson, A.; Bodet, A.; Monteau, A.; Fuentes, S.; Scollary, G.; Smith, T.; Howell, K.S. Using Synchronous Fluorescence to Investigate Compounds and Interactions Influencing Foam Characteristics in Sparkling Wines. Preprints 2019, 2019030119 (doi: 10.20944/preprints201903.0119.v1).

Abstract

The appearance of bubbles and foam can influence the likeability of a wine even before its consumption. Since foams are essential to visual and taste attributes of sparkling wines, it is of great importance to understand which compounds affect bubbles and foam characteristics. The aim of this work was to investigate the effect of interactions among proteins, amino acids, and phenols on the characteristics of foam in sparkling wines by using synchronous fluorescence spectroscopy techniques. Results has shown that several compounds present in sparkling wines influence foam quality differently, and importantly, highlighted how the interaction of those compounds might result in different effects on foam parameters. Amongst the results, mannoproteins were found to be most likely to promote foam and collar stability, while phenols were likely to increase the ratio of small bubbles and collar height in the foam matrix. In summary, this work contributes to a better understanding of the effect of wine compounds on foam quality as well as the effect of the interactions between those compounds.

Subject Areas

effervescence; bubbles; protein; yeast invertase; foamability; wine quality

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