Enoforum 2021
IVES 9 IVES Conference Series 9 Enoforum Web 9 Enoforum Web Conference 2021 9 Cellar session 9 Effect of Candida zemplinina oak chips biofilm on wine aroma profile

Effect of Candida zemplinina oak chips biofilm on wine aroma profile

Abstract

Candida zemplinina (synonym Starmerella bacillaris) is frequently isolated in grape must in different vitivinicultural areas. The enological significance of C. zemplinina strains used in combination with S. cerevisiae has been demonstrated, being wines produced by the above-mixed starter, characterized by higher amounts of glycerol and esters. The ability of this species to compete in a harsh environment such as wine is due to elaborate survival strategies. Biofilm formation is the principal way of resisting environmental stresses and represent the main microbial lifestyle in natural niches. Therefore, in this study 10 strains of C. zemplinina were analyzed to assess cell surface hydrophobicity using microbial adhesion to solvents (MATS) test and tested for their ability to form biofilms on winemaking material such as stainless steel and oak chips. The contribution of C. zemplinina biofilm on this material to wine aroma was evaluated. All strains showed a certain degree of hydrophobicity, and adhered to tested surfaces. In particular, sessile cells on chips ranged from 4.3 Log CFU/mL to 6 Log CFU/mL, while on stainless steel from 2.6 CFU/mL to 4.2 CFU/mL. Solid-phase microextraction gas chromatography-mass spectrometry showed that biofilm developed on oak can modulate the wood-wine transfer of volatile aromatic compounds. Therefore, surface-associated behaviours should be considered in the development of improved strategies to shape aroma profile of wines.

DOI:

Publication date: April 23, 2021

Issue: Enoforum 2021

Type: Article

Authors

Giorgia Perpetuini, Noemi Battistelli, Alessio Pio Rossetti, Giuseppe Arfelli, Rosanna Tofalo

Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo – Via R. Balzarini, 1, 64100, Teramo, Italy

Contact the author

Tags

Enoforum 2021 | IVES Conference Series

Citation

Related articles…

Where the sky is no limit — The transformation of wine marketing through text-to-video generation AI model

The introduction of ai-driven tools in digital content creation represents a significant shift in the landscape of marketing, particularly for industries reliant on rich visual storytelling such as the wine sector. The development of ai models like openai’s sora, runway’s gen-2 or google’s lumiere, which can generate realistic video content from textual descriptions, offers promising new avenues for enhancing brand narrative and consumer engagement. This research explores the potential of text-to-video (t2v) ai models to revolutionize wine marketing by creating dynamic, engaging content that captures the essence of vineyards and their products without the need for traditional video production processes.

Relation between the environmental factors of the terroir system and flavan-3-ol composition of grape berry seeds and skin at pre-veraison stage and harvest Influence of dedicate viticultural management

Quantity and quality of flavonoïds in grape berries are important parts of their global quality. Several studies had shown that tannins are responsible for some major flavour properties of red wines such as colour, bitterness and astringency. Nevertheless, their synthesis and properties are still misunderstood. Some studies had suggested that the tannic pool was set before veraison. Thus, the comprehension of the relations between environment and setting of this tannic pool, up to the harvest, is not sufficient.

Genetic diversity of Oenococcus oeni strains isolated from Yinchuan wine region in the East of Helan Mountain, China

Aim: This study aimed to isolate Oenococcus oeni in red wines from Yinchuan wine region in the East of Helan Mountain, China, and analysis their genetic diversity.

Methods and Results: Oenococcus oeni strains were isolated from Cabernet Sauvignon and Cabernet Gernischt wines of four

Fingerprinting as approach to unlock black box of taste

The black box of taste is getting unlocked. The starting point is to distinguish taste from tasting. Consider taste as a product characteristic; tasting is a sensorial activity. Consequently, taste can be studied on a molecular level and therefore be assessed more objectively, whilst tasting is a human activity and by definition subjective.

How pressing techniques affect must composition and wine quality of Pinot blanc

This study investigates how the sensory profile of Pinot Blanc is affected from different maceration and pressing techniques. Grapes were sourced from four vineyards in the village Tramin in South Tyrol. For the experiment 200 kg of grapes from each vineyard site were hand picked the day before harvest for the commercial winery took place. Grapes were stored over night at 4°C, homogenized and processed in the experimental winery at Laimburg research centre the day after harvest. Four different pressing techniques were applied in duplicates of 100kg each.