terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Influence of different Lachancea thermotolerans strains in wine acidity

Influence of different Lachancea thermotolerans strains in wine acidity

Abstract

Wine acidity is a parameter of great importance that influences different quality factors of the product such as biological stability or organoleptic characteristics. In the current context of climate change, which gives rise to wines with higher levels of ethanol and lower acidity, the biological acidification with yeast species such as Lachancea thermotolerans could be a solution.

In this work, the effect of the inoculation of different L. thermotolerans on the acidity of wine was studied. For this, microvinifications were carried out with pasteurized must and the evolution of fermentation was monitored by measuring the weight lost. The results were compared with a control fermented with a commercial strain of Saccharomyces cerevisiae (Uvaferm VRB®, Lallemand). In the obtained wines, the most important oenological parameters were analysed.

Data showed differences in the fermentation kinetics among the strains of L. thermotolerans, and the commercial strain of S. cerevisiae was the fastest one. The wines inoculated with the L. thermotolerans strains presented significantly lower pH than the control wines and the production of lactic acid showed high variability among the strains, with concentrations ranging from 0,88 g/L to 4,19 g/L, which highlights the importance of strain selection processes. Overall, the results obtained in this work demonstrated the potential of the L. thermotolerans strains studied to be used as inoculums for biological acidification.

DOI:

Publication date: October 10, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Rocío Escribano-Viana1*,Patrocinio Garijo1, Lucía González-Arenzana1,Pilar Santamaría1, Ana Rosa Gutiérrez1

1Instituto de Ciencias de la Vid y del Vino, (Universidad de La Rioja, Gobierno de La Rioja, CSIC), Finca La Grajera, Carretera de Burgos, km 6, 26071 Logroño, La Rioja, Spain.

Contact the author*

Keywords

Lachancea thermotolerans, wine, acidity

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

How are canned wine drinkers perceived? An investigation involving Swiss nationals and different scenarios of outdoor leisure activities

This study examines how people who consume wine in cans are perceived in terms of their basic personality characteristics, helps understand the role of cultural background on people’s perception, and verify the role played by the consumption context on the perception. Our hypothesis is that prejudice and negative attitudes towards wine in cans might exert a negative effect on the evaluation of people who consume canned wine. To evaluate this hypothesis, the consumption of wine in cans was evoked in four different contexts of use during outdoor leisure activity (beach resort, ski resort, desert safari, and party). In order to examine the effect of culture on subject’s response we use participants from Switzerland, a country where three different cultures, associated with three different languages, cohabit.

Optimization of the ripening time of new varieties descendants of Monastrell

Given the impact of climate change on viticulture in the Region of Murcia, this paper attempts to expose the possibility of using genetic improvement as a dilemma that allows access to new descendant varieties of the autochthonous variety Monastrell crossed with varieties such as Syrah and Cabernet. Sauvignon, thus obtaining hybrids (Gebas and Myrtia). In it, the chromatic parameters and the phenolic profile of the new varieties will be compared with those obtained by the Monastrell variety at two moments during maturation (12 and 14 º Baumé), to check if the results would allow earlier harvests in these new varieties thus avoiding the decoupling between phenolic and technological maturity, while improving the quality of grapes and wines.

REGAVID a decision tool to deficit irrigation in a temperate climate (DO Monterrei – Spain)

In temperate climates, such as in the North of Spain, the use of irrigation in the vineyard has not been required, due to the usual rainfall from June to August. In some large vineyards, irrigation management has been carried out, based on occasional support irrigation, or for the application of nutrients (fertigation). Currently it is necessary to implement decision support models to manage irrigation water in real time and avoid misuse of a scarce resource. Moreover, quality standards must be achieved, as in the previous rainfed viticulture.

Cumulative effect of deficit irrigation and salinity on vine responses

Climate change is increasing water needs in most of the wine growing regions while reducing the availability and quality of water resources for irrigation. In this context, the sustainability of Mediterranean viticulture depends on grapevine responses to the combinations of water and salt stress. With this aim, this work studies the effects of deficit irrigation and salinity on the physiology of the Tempranillo cultivar (Vitis vinifera L.) grafted onto a drought and salinity tolerant rootstock (1103 Paulsen).

Genetic variation among wild grapes native to Japan

Domesticated grapes are assumed to have originated in the Middle East. However, a considerable number of species are native in East Asian countries such as China, Korea and Japan as well. Evidence suggests that a total of seven species and eight varieties have been found to be native to Japan. A wide level variation in morphology, genetic and fruit composition exist in wild grape native to Japan.