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…

Sensory profile of wines obtained from disease-resistant varieties in La Rioja

The European wine industry is facing multiple challenges derived from climate change and the pressure of different fungal diseases that are compromising the production of traditional varieties. A sustainable alternative maybe the adoption of resistant varieties. In this study, we have evaluated the enological potential of 9 resistant varieties (5 white and 4 red varieties) in La Rioja. Microvinifications were carried out with three biological replications. Oenological parameters were very diverse with acid content varying from 2.6 g/L to 6.6 g/L.

Molecularly imprinted polymers: an innovative strategy for harvesting polyphenoles from grape seed extracts

Multiple sclerosis (MS) is a multifactorial autoimmune disease associating demyelination and axonal degeneration developing in young adults and affecting 2–3 million people worldwide. Plant polyphenols endowed with many therapeutic benefits associated with anti-inflammatory and antioxidant properties represent highly interesting new potential therapeutic strategies. We recently showed the safety and high efficiency of grape seed extract (GSE), a complex mixture of polyphenolics compounds comprising notably flavonoids and proanthocyanidins, in an experimental autoimmune encephalomyelitis (EAE) mouse model of MS.

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.

Agronomic and oenological behavior of the minority Mandón variety on two rootstocks in the D.O. Arribes

A large population of vines of the Mandón minority red variety (synonymous with Garró) has been located in old vineyards of the D.O. Arribes (Zamora and Salamanca) to conserve and recover this minority variety. The wines made with this variety are characterized by their good structure and color, interesting harmony, an excellently low pH, with high acidity, as well as complex aromas of blue fruits and a marked and expressive minerality.

Effect of ultraviolet B radiation on pathogenic molds of grapes

The fungicidal effect of UV-C radiation (100-280 nm wavelength) is well known, but its applicability for the control of pathogenic molds of grapes is conditioned by its effect on the host and by the risks inherent in its handling[1].
As an alternative, the effect in vitro of UV-B radiation (280-315 nm) on the main pathogenic molds of grapes has been studied: Botrytis cinerea, Aspergillus niger, Penicillium expansum and Rhizopus stolonifer.