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…

Sustainable wine industry challenge: optimised cork powder us new sustainable fining agent to remove negative volatile phenols

AIM: Cork, the bark of Quercus suber L. is a natural, renewable, sustainable, and biodegradable raw material, representing an abundant and cheap source of raw material. Portugal is the major cork producer (185,000 tons) processing about three-quarters of the world’s cork, generating up to 25 wt % of cork dust as a by-product.
Read More

Understanding vine response to Mediterranean summer stress for the development of adaptation strategies – in the kaolin case

In this video recording of the IVES science meeting 2023, Sara Bernardo (CITAB, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal) speaks about understanding vine response to Mediterranean summer stress for the development of adaptation strategies – in the kaolin case. This presentation is based on an original article accessible for free on OENO One.

Read More

Unexpected relationships between δ13C, water deficit, and wine grape performance

Water nutrition is crucial for wine grape performance. Thus soil investigation aims at characterizing spatial and temporal variability of available water. A possible strategy

Read More

EVALUATING WINEMAKING APPLICATIONS OF ULTRAFILTRATION TECHNOLOGY

Ultrafiltration is a process that fractionates mixtures using semipermeable membranes, primarily on the basis of molecular weight. Depending on the nominal molecular weight cut-off (MWCO) specifications of the membrane, smaller molecules pass through the membrane into the ‘permeate’, while larger molecules are retained and concentrated in the ‘retentate’. This study investigated applications of ultrafiltration technology for enhanced wine quality and profitability. The key objective was to establish to what extent ultrafiltration could be used to manage phenolic compounds (associated with astringency or bitterness) and proteins (associated with haze formation) in white wine.

Read More

Effects of mechanical leafing and deficit irrigation on Cabernet Sauvignon grown in warm climate of California

San Joaquin Valley accounts for 40% of wine grape acreage and produces 70% of wine grape in California. Fruit quality is one of most important factors which impact the economical sustainability of farming wine grapes in this region. Due to the recent drought and expected labor cost increase, the wine industry is thrilled to understand how to improve fruit quality while maintaining the yield with less water and labor input. The present study aims to study the interactive effects of mechanical leafing and deficit irrigation on yield and berry compositions of Cabernet Sauvignon grown in warm climate of California.

Read More