terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Long-lasting flavour perception of wines treated with oenological additives considering the individual PROP taste-phenotype

Long-lasting flavour perception of wines treated with oenological additives considering the individual PROP taste-phenotype

Abstract

The use of oenological additives is becoming a common practice due to the technological and sensory properties they provide to the wines. However, the number of studies focused on the impact that these additives might induce on wine flavor perception during wine tasting is still quite scarce. The aim of this work was to evaluate the effect of three different types of common oenological additives: two oenotannins (ellagitannin and gallotannin) and a commercial preparation of yeast mannoproteins on the long-lasting flavor perception (aroma and astringency). For this, three red wines with each type of additive and a control wine without them were prepared. All the wines were aromatized with two aroma mixtures responsible for the “fruity” and “woody” aroma nuances. Retronasal aroma and astringency were evaluated at the same time using a dynamic sensory methodology (Time-Intensity) and a trained panel (n=40), consisted of non-tasters (n=20) and tasters (n=20) based on their PROP (6-n-propylthiouracil) responsiveness. The parameters AUC (area under the curve), I max (maximum intensity), T max (time to reach maximum intensity) and T end (time at which the aroma attribute is no longer perceived) were evaluated for each wine type to assess the effect of these additives on the dynamics of flavor perception. Results showed significant differences (p<0.05) in the perception of astringency according to PROP phenotype; tasting PROP individuals showed higher values for most T-I parameters than non-tasters. However, the PROP phenotype did not affect the perception of retronasal aroma. In addition, the three oenological additives had an effect on astringency and retronasal aroma perception. For instance, they significantly increased the long-lasting perception of astringency compared to the control, while gallotannin also increased the long-lasting persistence of the woody aroma.

Acknowledgements: Authors acknowledge AEI and MICIN for the financial support (Project PID2019-11734-RB-I00) and all the participants in this study.

DOI:

Publication date: October 13, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Pozo-Bayón, Maria Angeles*, Velazquez-Martínez, Rafael I., Criado Celia, Muñoz-González Carolina

Instituto de investigación en Ciencias de la Alimentación (CIAL) (CSIC-UAM), C/ Nicolás Cabrera, 9, 28049, Madrid, Spain

Contact the author*

Keywords

wine, oenotannins, mannoproteins, flavour persistence, PROP taste phenotype, Time-intensity sensory analysis

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Effect of foliar application of Ca, Si and their combination on grape volatile composition

Calcium (Ca) is an important nutrient for plants which plays key signaling and structural roles. It has been observed that exogenous Ca application favors the pectin accumulation and inhibition of polygalacturonase enzymes, minimizing fruit spoilage. Silicon (Si) is a non-essential element which has been found to be beneficial for improving crop yield and quality, as well as plant tolerance to diverse abiotic and biotic stress factors. The effect of Si supply to grapevine has been assessed in few investigations, which reported positive changes in grape quality and must composition.

Effect of spray with autochthonous Trichoderma strains and its secondary metabolites on the quality of Tempranillo grape

Trichoderma is one of the most widely used fungal biocontrol agents on vineyards due to its multiple benefits on this crop, such as its fungicidal and growth promoting capacity. In this work, we have analyzed the effect on the concentration of nutrients in grapevine leaves and on the quality of the grape must after spraying an autochthonous strain of Trichoderma harzianum and one of the main secondary metabolites produced by this genus, 6-pentyl-α-pyrone (6PP).

Chemical and microbiological evaluation of Ribeiro wines (NW Spain)

Wine produced under Designation of Origin (DOP) Ribeiro, the oldest DOP in Galicia (NW Spain), are elaborated using local grape cultivars, grown at the valleys of Miño, Avia and Arnoia rivers. The landscape formed by slopes and terraces and the peculiar climate of continental character, softened by the proximity of Atlantic Ocean, make it an area of excellent aptitude for vine cultivation. In addition, small-scale farming and the use of traditional techniques for vineyard management provide a great diversity to Ribeiro wines. This study presents the evaluation of red and white wines (bottled or bulk wines) from DOP Ribeiro, produced between years 2018-2022.

The exploitation of Croatian grapevine genetic resources for the breeding of new resistant cultivars 

Croatian viticulture is mainly based on native grapevine varieties susceptible to various diseases and pests, which leads to unsustainable use of large amounts of pesticides. The sustainable development of viticulture in the future will only be possible by increasing the resistance of the grapevine through the development of new resistant varieties. Breeding programs have been launched in the leading wine-growing countries to develop resistant varieties possessing high-quality levels. Native cultivars from Croatia are not included in the breeding programs of other countries.

The colour pattern of flower arrangements influence wine tasters’ sensory description

The arrangements of flowers and wine counterparts are inextricably linked. Whether a fundamental aspect of tablescaping or acolytes to broader entertainment rituals, they have an entangled history since ancient times. The aim of this contribution is to verify the influence of visually delicate and robust flower arrangements on individual description of wines. Changes in the sensory description of wines were investigated during subjects’ (thirty-two participants) exposure to three different conditions: the presence of delicate, robust, or totally absent flower arrangements.