terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Use of UHPH to improve the implantation of non-Saccharomyces yeasts

Use of UHPH to improve the implantation of non-Saccharomyces yeasts

Abstract

Ultra High-Pressure Homogenization (UHPH) is a high-pressure pumping at 300 MPa (>200 MPa) with a subsequent depressurization against a highly resistant valve made of tungsten carbide covered by ceramic materials or carbon nanoparticles. The intense impact and shear efforts produce the nano-fragmentation of colloidal biopolymers including the elimination of microorganism (pasteurization or sterilization depending on in-valve temperature) and the inactivation of enzymes. This technology is extremely gentle with molecules with sensory impact remaining unaffected compounds as terpenes, thiols, and anthocyanins, and protected of ulterior oxidations by the inactivation of oxidative enzymes (PPOs). The use of UHPH in must before fermentation is a powerful technology to eliminate wild microorganism and to facilitate the implantation of non-Saccharomyces inoculated as starters. In this work we show the efficient implantation of several weak-fermenter non-Saccharomyces and the effect on the release of volatile thiols.

Acknowledgements: This research was funded by MICIN, project PID2021-124250OB-I00.

References: 

1)  Morata, A. et al. (2020) Front. Nutr.7, 598286. https://doi.org/10.3389/fnut.2020.598286  

2)  Vaquero, C. et al. (2022) Food Bioprocess Technol. 15, 620–634. https://doi.org/10.1007/s11947-022-02766-8  

3)  Loira, I. et al. (2018) Innov. Food. Sci. Emerg. Technol. 50, 50–56. https://doi.org/10.1016/j.ifset.2018.10.005   

4)  Bañuelos, M.A. et al. (2020) Food Chem. 332, 127417. https://doi.org/10.1016/j.foodchem.2020.127417

DOI:

Publication date: October 5, 2023

Issue: ICGWS 2023

Type: Article

Authors

Antonio MORATA1*, Iris LOIRA1, Juan Manuel DEL FRESNO1, Carlos ESCOTT1, Felipe PALOMERO1, Carmen LÓPEZ1, Buenaventura GUAMIS2, Mª Antonia BAÑUELOS3, Cristian VAQUERO1, Carmen GONZÁLEZ1

1enotecUPM, Dept. Chemistry and Food Technology, ETSIAAB, Universidad Politécnica de Madrid, 208040; Madrid, Spain
2YPSICON ADVANCED TECHNOLOGIES S.L, Via Trajana 50-56 Nave 21, 08020, Barcelona, Spain
3enotecUPM, Dept. Biotechnology, ETSIAAB, Universidad Politécnica de Madrid, 208040; Madrid, Spain

Contact the author*

Keywords

UHPH, Implantation, non-Saccharomyces, Lachancea thermotolerans, terpenes, thiols

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Model-assisted analysis of the root traits underlying RSA genotypic diversity in Vitis: a promising approach for rootstock selection?

By dissecting the root system architecture (RSA) into its underpinning components (e.g. root emission, axial growth, radial growth, branching, root direction or tropism) and identifying the relationships between them, functional-structural 3D root models are promising tools for analyzing the diversity and complexity of root system phenotypes with Genotype × Environment interactions. The model parameters are assumed to be synthetic traits, less influenced by the environment, and consequently with less polygenic architectures than the integrative RSA traits they drive. Root models can serve as a basis for in silico development of root system ideotypes by highlighting the developmental processes and parameters that most likely influence RSA fitness.

Wine odors: chemicals, physicochemical and perceptive processes involved in their perception

The odors of wines are diverse, complex and dynamic and much research has been devoted to the understanding of their chemical bases. However, while the “basic” chemical part of the problem, namely the identity of the chemicals responsible for the different odor nuances, was satisfactorily solved years ago, there are some relevant questions precluding a clear understanding. These questions are related to the physicochemical interactions determining the effective volatilities of the odorants and, particularly, to the perceptual interactions between different odor molecules affecting in different ways to the final sensory outputs.

Metabolomic profiling of botrytized grape berries: unravelling the dynamic chemical transformations during noble rot

Botrytis cinerea, a fungal pathogen commonly known as grey mold, which under specific climatic conditions can develop into a desirable form known as noble rot. In this process the fungus penetrates the grape skin, allowing water evaporation and concentration of sugars and flavors, while profoundly affects the metabolite composition of grapes, leading to the production of unique and desirable compounds in the resulting wines. The result is a unique and complex wine with a luscious sweetness, heightened aromatics, and a distinct character.

New tool to evaluate color modifications during oxygen consumption in white and red wines

Measuring the effect of oxygen consumption on the color of wines as the level of dissolved oxygen decreases over time is very useful to know how much oxygen a wine can consume without significantly altering its color. The changes produced in wine after being exposed to high oxygen concentrations have been studied by different authors, but in all cases the wine has been analyzed once the oxygen consumption process has been completed. This work presents the results obtained with the use of an equipment designed and made to measure simultaneously the level of dissolved oxygen and the spectrum of the wine, during the oxygen consumption process from saturation levels with air to very low levels, which indicate the total consumption of the dosed oxygen[1,2].

Discovering the process of noble rot: fungal ecology of grape berries during the noble rot transformation in different vineyards of the Tokaj wine region

Botrytis cinerea, a well-known grapevine pathogen, has more than 1200 host plants causing grey rot in grapevine berries. However, it can also result in a desirable phenomenon called noble rot under specific microclimate conditions. An extraordinary demonstration of this natural process can be observed in the creation of aszú wines within Hungary’s Tokaj wine region. Beside B. cinerea other fungi and yeasts are involved in the secondary metabolic development of the grape berry which contributes to the sensory and analytical characterization of noble rot wines.